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tkWinWm.c

/*
 * tkWinWm.c --
 *
 *    This module takes care of the interactions between a Tk-based
 *    application and the window manager.  Among other things, it
 *    implements the "wm" command and passes geometry information
 *    to the window manager.
 *
 * Copyright (c) 1995-1997 Sun Microsystems, Inc.
 * Copyright (c) 1998-2000 by Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkWinWm.c,v 1.1.1.1 2004/04/02 22:35:04 joye Exp $
 */

#include "tkWinInt.h"
#include <shellapi.h>

/*
 * Event structure for synthetic activation events.  These events are
 * placed on the event queue whenever a toplevel gets a WM_MOUSEACTIVATE
 * message.
 */

typedef struct ActivateEvent {
    Tcl_Event ev;
    TkWindow *winPtr;
} ActivateEvent;

/*
 * A data structure of the following type holds information for
 * each window manager protocol (such as WM_DELETE_WINDOW) for
 * which a handler (i.e. a Tcl command) has been defined for a
 * particular top-level window.
 */

typedef struct ProtocolHandler {
    Atom protocol;            /* Identifies the protocol. */
    struct ProtocolHandler *nextPtr;
                        /* Next in list of protocol handlers for
                         * the same top-level window, or NULL for
                         * end of list. */
    Tcl_Interp *interp;       /* Interpreter in which to invoke command. */
    char command[4];          /* Tcl command to invoke when a client
                         * message for this protocol arrives.
                         * The actual size of the structure varies
                         * to accommodate the needs of the actual
                         * command. THIS MUST BE THE LAST FIELD OF
                         * THE STRUCTURE. */
} ProtocolHandler;

#define HANDLER_SIZE(cmdLength) \
    ((unsigned) (sizeof(ProtocolHandler) - 3 + cmdLength))

/*
 * Helper type passed via lParam to TkWmStackorderToplevelEnumProc
 */
typedef struct TkWmStackorderToplevelPair {
    Tcl_HashTable *table;
    TkWindow **window_ptr;
} TkWmStackorderToplevelPair;

/*
 * This structure represents the contents of a icon, in terms of its
 * image.  The HICON is an internal Windows format.  Most of these
 * icon-specific-structures originated with the Winico extension.
 * We stripped out unused parts of that code, and integrated the
 * code more naturally with Tcl.
 */
typedef struct {
      UINT              Width, Height, Colors; /*  Width, Height and bpp */
      LPBYTE                  lpBits;                /*  ptr to DIB bits */
      DWORD             dwNumBytes;            /*  how many bytes? */
      LPBITMAPINFO      lpbi;                          /*  ptr to header */
      LPBYTE                  lpXOR;                 /*  ptr to XOR image bits */
      LPBYTE                  lpAND;                 /*  ptr to AND image bits */
      HICON             hIcon;                 /*  DAS ICON */
} ICONIMAGE, *LPICONIMAGE;
/*
 * This structure is how we represent a block of the above
 * items.  We will reallocate these structures according to
 * how many images they need to contain.
 */
typedef struct {
      int         nNumImages;                      /*  How many images? */
      ICONIMAGE   IconImages[1];                   /*  Image entries */
} BlockOfIconImages, *BlockOfIconImagesPtr;
/*
 * These two structures are used to read in icons from an
 * 'icon directory' (i.e. the contents of a .icr file, say).
 * We only use these structures temporarily, since we copy
 * the information we want into a BlockOfIconImages.
 */
typedef struct {
      BYTE  bWidth;               /*  Width of the image */
      BYTE  bHeight;              /*  Height of the image (times 2) */
      BYTE  bColorCount;          /*  Number of colors in image (0 if >=8bpp) */
      BYTE  bReserved;            /*  Reserved */
      WORD  wPlanes;              /*  Color Planes */
      WORD  wBitCount;            /*  Bits per pixel */
      DWORD dwBytesInRes;         /*  how many bytes in this resource? */
      DWORD dwImageOffset;        /*  where in the file is this image */
} ICONDIRENTRY, *LPICONDIRENTRY;
typedef struct {
      WORD        idReserved;   /*  Reserved */
      WORD        idType;       /*  resource type (1 for icons) */
      WORD        idCount;      /*  how many images? */
      ICONDIRENTRY      idEntries[1]; /*  the entries for each image */
} ICONDIR, *LPICONDIR;

/*
 * A pointer to one of these strucutures is associated with each
 * toplevel.  This allows us to free up all memory associated with icon
 * resources when a window is deleted or if the window's icon is
 * changed.  They are simply reference counted according to:
 *
 * (i) how many WmInfo structures point to this object
 * (ii) whether the ThreadSpecificData defined in this file contains
 * a pointer to this object.
 *
 * The former count is for windows whose icons are individually
 * set, and the latter is for the global default icon choice.
 *
 * Icons loaded from .icr/.icr use the iconBlock field, icons
 * loaded from .exe/.dll use the hIcon field.
 */
typedef struct WinIconInstance {
    int refCount;        /* Number of instances that share this
                          * data structure. */
    BlockOfIconImagesPtr iconBlock;
                                 /* Pointer to icon resource data for
                                  * image. */
} WinIconInstance;

typedef struct WinIconInstance *WinIconPtr;

/*
 * A data structure of the following type holds window-manager-related
 * information for each top-level window in an application.
 */

typedef struct TkWmInfo {
    TkWindow *winPtr;         /* Pointer to main Tk information for
                         * this window. */
    HWND wrapper;       /* This is the decorative frame window
                         * created by the window manager to wrap
                         * a toplevel window.  This window is
                         * a direct child of the root window. */
    char *title;        /* Title to display in window caption.  If
                         * NULL, use name of widget.  Malloced. */
    char *iconName;           /* Name to display in icon.  Malloced. */
    XWMHints hints;           /* Various pieces of information for
                         * window manager. */
    char *leaderName;         /* Path name of leader of window group
                         * (corresponds to hints.window_group).
                         * Malloc-ed.  Note:  this field doesn't
                         * get updated if leader is destroyed. */
    TkWindow *masterPtr;      /* Master window for TRANSIENT_FOR property,
                         * or NULL. */
    Tk_Window icon;           /* Window to use as icon for this window,
                         * or NULL. */
    Tk_Window iconFor;        /* Window for which this window is icon, or
                         * NULL if this isn't an icon for anyone. */

    /*
     * Information used to construct an XSizeHints structure for
     * the window manager:
     */

    int defMinWidth, defMinHeight, defMaxWidth, defMaxHeight;
                        /* Default resize limits given by system. */
    int sizeHintsFlags;       /* Flags word for XSizeHints structure.
                         * If the PBaseSize flag is set then the
                         * window is gridded;  otherwise it isn't
                         * gridded. */
    int minWidth, minHeight;  /* Minimum dimensions of window, in
                         * grid units, not pixels. */
    int maxWidth, maxHeight;  /* Maximum dimensions of window, in
                         * grid units, not pixels, or 0 to default. */
    Tk_Window gridWin;        /* Identifies the window that controls
                         * gridding for this top-level, or NULL if
                         * the top-level isn't currently gridded. */
    int widthInc, heightInc;  /* Increments for size changes (# pixels
                         * per step). */
    struct {
      int x;      /* numerator */
      int y;  /* denominator */
    } minAspect, maxAspect;   /* Min/max aspect ratios for window. */
    int reqGridWidth, reqGridHeight;
                        /* The dimensions of the window (in
                         * grid units) requested through
                         * the geometry manager. */
    int gravity;        /* Desired window gravity. */

    /*
     * Information used to manage the size and location of a window.
     */

    int width, height;        /* Desired dimensions of window, specified
                         * in grid units.  These values are
                         * set by the "wm geometry" command and by
                         * ConfigureNotify events (for when wm
                         * resizes window).  -1 means user hasn't
                         * requested dimensions. */
    int x, y;                 /* Desired X and Y coordinates for window.
                         * These values are set by "wm geometry",
                         * plus by ConfigureNotify events (when wm
                         * moves window).  These numbers are
                         * different than the numbers stored in
                         * winPtr->changes because (a) they could be
                         * measured from the right or bottom edge
                         * of the screen (see WM_NEGATIVE_X and
                         * WM_NEGATIVE_Y flags) and (b) if the window
                         * has been reparented then they refer to the
                         * parent rather than the window itself. */
    int borderWidth, borderHeight;
                        /* Width and height of window dressing, in
                         * pixels for the current style/exStyle.  This
                         * includes the border on both sides of the
                         * window. */
    int configWidth, configHeight;
                        /* Dimensions passed to last request that we
                         * issued to change geometry of window.  Used
                         * to eliminate redundant resize operations. */
    HMENU hMenu;        /* the hMenu associated with this menu */
    DWORD style, exStyle;     /* Style flags for the wrapper window. */
    LONG styleConfig;         /* Extra user requested style bits */
    LONG exStyleConfig;       /* Extra user requested extended style bits */

    /*
     * List of children of the toplevel which have private colormaps.
     */

    TkWindow **cmapList;      /* Array of window with private colormaps. */
    int cmapCount;            /* Number of windows in array. */

    /*
     * Miscellaneous information.
     */

    ProtocolHandler *protPtr; /* First in list of protocol handlers for
                         * this window (NULL means none). */
    int cmdArgc;        /* Number of elements in cmdArgv below. */
    CONST char **cmdArgv;     /* Array of strings to store in the
                         * WM_COMMAND property.  NULL means nothing
                         * available. */
    char *clientMachine;      /* String to store in WM_CLIENT_MACHINE
                         * property, or NULL. */
    int flags;                /* Miscellaneous flags, defined below. */
    int numTransients;        /* number of transients on this window */
    WinIconPtr iconPtr;         /* pointer to titlebar icon structure for
                                 * this window, or NULL. */
    struct TkWmInfo *nextPtr; /* Next in list of all top-level windows. */
} WmInfo;

/*
 * Flag values for WmInfo structures:
 *
 * WM_NEVER_MAPPED -          non-zero means window has never been
 *                      mapped;  need to update all info when
 *                      window is first mapped.
 * WM_UPDATE_PENDING -        non-zero means a call to UpdateGeometryInfo
 *                      has already been scheduled for this
 *                      window;  no need to schedule another one.
 * WM_NEGATIVE_X -            non-zero means x-coordinate is measured in
 *                      pixels from right edge of screen, rather
 *                      than from left edge.
 * WM_NEGATIVE_Y -            non-zero means y-coordinate is measured in
 *                      pixels up from bottom of screen, rather than
 *                      down from top.
 * WM_UPDATE_SIZE_HINTS -     non-zero means that new size hints need to be
 *                      propagated to window manager. Not used on Win.
 * WM_SYNC_PENDING -          set to non-zero while waiting for the window
 *                      manager to respond to some state change.
 * WM_MOVE_PENDING -          non-zero means the application has requested
 *                      a new position for the window, but it hasn't
 *                      been reflected through the window manager
 *                      yet.
 * WM_COLORMAPS_EXPLICIT -    non-zero means the colormap windows were
 *                      set explicitly via "wm colormapwindows".
 * WM_ADDED_TOPLEVEL_COLORMAP - non-zero means that when "wm colormapwindows"
 *                      was called the top-level itself wasn't
 *                      specified, so we added it implicitly at
 *                      the end of the list.
 * WM_WIDTH_NOT_RESIZABLE -   non-zero means that we're not supposed to
 *                      allow the user to change the width of the
 *                      window (controlled by "wm resizable"
 *                      command).
 * WM_HEIGHT_NOT_RESIZABLE -  non-zero means that we're not supposed to
 *                      allow the user to change the height of the
 *                      window (controlled by "wm resizable"
 *                      command).
 * WM_WITHDRAWN -       non-zero means that this window has explicitly
 *                      been withdrawn. If it's a transient, it should
 *                      not mirror state changes in the master.
 */

#define WM_NEVER_MAPPED             (1<<0)
#define WM_UPDATE_PENDING           (1<<1)
#define WM_NEGATIVE_X               (1<<2)
#define WM_NEGATIVE_Y               (1<<3)
#define WM_UPDATE_SIZE_HINTS        (1<<4)
#define WM_SYNC_PENDING             (1<<5)
#define WM_CREATE_PENDING           (1<<6)
#define WM_MOVE_PENDING             (1<<7)
#define WM_COLORMAPS_EXPLICIT       (1<<8)
#define WM_ADDED_TOPLEVEL_COLORMAP  (1<<9)
#define WM_WIDTH_NOT_RESIZABLE            (1<<10)
#define WM_HEIGHT_NOT_RESIZABLE           (1<<11)
#define WM_WITHDRAWN                (1<<12)

/*
 * Window styles for various types of toplevel windows.
 */

#define WM_OVERRIDE_STYLE (WS_POPUP|WS_CLIPCHILDREN|CS_DBLCLKS)
#define EX_OVERRIDE_STYLE (WS_EX_TOOLWINDOW)

#define WM_TOPLEVEL_STYLE (WS_OVERLAPPEDWINDOW|WS_CLIPCHILDREN|CS_DBLCLKS)
#define EX_TOPLEVEL_STYLE (0)

#define WM_TRANSIENT_STYLE \
            (WS_POPUP|WS_CAPTION|WS_SYSMENU|WS_CLIPSIBLINGS|CS_DBLCLKS)
#define EX_TRANSIENT_STYLE (WS_EX_DLGMODALFRAME)

/*
 * The following structure is the official type record for geometry
 * management of top-level windows.
 */

static void       TopLevelReqProc(ClientData dummy, Tk_Window tkwin);

static Tk_GeomMgr wmMgrType = {
    "wm",                     /* name */
    TopLevelReqProc,                /* requestProc */
    (Tk_GeomLostSlaveProc *) NULL,  /* lostSlaveProc */
};

typedef struct ThreadSpecificData {
    HPALETTE systemPalette;      /* System palette; refers to the
                          * currently installed foreground logical
                          * palette. */
    TkWindow *createWindow;      /* Window that is being constructed.  This
                          * value is set immediately before a
                          * call to CreateWindowEx, and is used
                          * by SetLimits.  This is a gross hack
                          * needed to work around Windows brain
                          * damage where it sends the
                          * WM_GETMINMAXINFO message before the
                          * WM_CREATE window. */
    int initialized;             /* Flag indicating whether thread-
                          * specific elements of module have
                          * been initialized. */
    int firstWindow;             /* Flag, cleared when the first window
                          * is mapped in a non-iconic state. */
    WinIconPtr iconPtr;          /* IconPtr being used as default for all
                                  * toplevels, or NULL. */
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;

/*
 * The following variables cannot be placed in thread local storage
 * because they must be shared across threads.
 */

static int initialized;        /* Flag indicating whether module has
                        * been initialized. */

/* 
 * A pointer to a shell proc which allows us to extract icons from
 * any file.  We just initialize this when we start up (if we can)
 * and then it never changes
 */
DWORD* (WINAPI *shgetfileinfoProc) (LPCTSTR pszPath, DWORD dwFileAttributes,
    SHFILEINFO* psfi, UINT cbFileInfo, UINT uFlags) = NULL;

TCL_DECLARE_MUTEX(winWmMutex)

/*
 * Forward declarations for procedures defined in this file:
 */

static int        ActivateWindow _ANSI_ARGS_((Tcl_Event *evPtr,
                      int flags));
static void       ConfigureTopLevel _ANSI_ARGS_((WINDOWPOS *pos));
static void       GenerateConfigureNotify _ANSI_ARGS_((
                      TkWindow *winPtr));
static void       GetMaxSize _ANSI_ARGS_((WmInfo *wmPtr,
                      int *maxWidthPtr, int *maxHeightPtr));
static void       GetMinSize _ANSI_ARGS_((WmInfo *wmPtr,
                      int *minWidthPtr, int *minHeightPtr));
static TkWindow * GetTopLevel _ANSI_ARGS_((HWND hwnd));
static void       InitWm _ANSI_ARGS_((void));
static int        InstallColormaps _ANSI_ARGS_((HWND hwnd, int message,
                      int isForemost));
static void       InvalidateSubTree _ANSI_ARGS_((TkWindow *winPtr,
                      Colormap colormap));
static int        ParseGeometry _ANSI_ARGS_((Tcl_Interp *interp,
                      char *string, TkWindow *winPtr));
static void       RefreshColormap _ANSI_ARGS_((Colormap colormap,
                          TkDisplay *dispPtr));
static void       SetLimits _ANSI_ARGS_((HWND hwnd, MINMAXINFO *info));
static void       TkWmStackorderToplevelWrapperMap _ANSI_ARGS_((
                      TkWindow *winPtr,
                      Tcl_HashTable *table));
static LRESULT CALLBACK TopLevelProc _ANSI_ARGS_((HWND hwnd, UINT message,
                      WPARAM wParam, LPARAM lParam));
static void       TopLevelEventProc _ANSI_ARGS_((ClientData clientData,
                      XEvent *eventPtr));
static void       TopLevelReqProc _ANSI_ARGS_((ClientData dummy,
                      Tk_Window tkwin));
static void       UpdateGeometryInfo _ANSI_ARGS_((
                      ClientData clientData));
static void       UpdateWrapper _ANSI_ARGS_((TkWindow *winPtr));
static LRESULT CALLBACK WmProc _ANSI_ARGS_((HWND hwnd, UINT message,
                      WPARAM wParam, LPARAM lParam));
static void       WmWaitVisibilityOrMapProc _ANSI_ARGS_((
                      ClientData clientData, XEvent *eventPtr));
static BlockOfIconImagesPtr   ReadIconOrCursorFromFile _ANSI_ARGS_((
                      Tcl_Interp *interp, Tcl_Obj* fileName, BOOL isIcon));
static WinIconPtr       ReadIconFromFile _ANSI_ARGS_((
                      Tcl_Interp *interp, Tcl_Obj *fileName));
static WinIconPtr       GetIconFromPixmap _ANSI_ARGS_((Display *dsPtr,
                                           Pixmap pixmap));
static int              ReadICOHeader _ANSI_ARGS_((Tcl_Channel channel));
static BOOL             AdjustIconImagePointers _ANSI_ARGS_((LPICONIMAGE lpImage));
static HICON            MakeIconOrCursorFromResource 
                            _ANSI_ARGS_((LPICONIMAGE lpIcon, BOOL isIcon));
static HICON            GetIcon _ANSI_ARGS_((WinIconPtr titlebaricon, 
                      int icon_size));
static int        WinSetIcon _ANSI_ARGS_((Tcl_Interp *interp,
                      WinIconPtr titlebaricon, Tk_Window tkw));
static void             FreeIconBlock _ANSI_ARGS_((BlockOfIconImagesPtr lpIR));
static void             DecrIconRefCount _ANSI_ARGS_((WinIconPtr titlebaricon));

static int        WmAspectCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmAttributesCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmClientCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmColormapwindowsCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmCommandCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmDeiconifyCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmFocusmodelCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmFrameCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmGeometryCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmGridCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmGroupCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmIconbitmapCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmIconifyCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmIconmaskCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmIconnameCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmIconpositionCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmIconwindowCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmMaxsizeCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmMinsizeCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmOverrideredirectCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmPositionfromCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmProtocolCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmResizableCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmSizefromCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmStackorderCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmStateCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmTitleCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmTransientCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static int        WmWithdrawCmd _ANSI_ARGS_((Tk_Window tkwin,
                      TkWindow *winPtr, Tcl_Interp *interp, int objc,
                      Tcl_Obj *CONST objv[]));
static void       WmUpdateGeom _ANSI_ARGS_((WmInfo *wmPtr,
                      TkWindow *winPtr));

/* Used in BytesPerLine */
#define WIDTHBYTES(bits)      ((((bits) + 31)>>5)<<2)

/*
 *----------------------------------------------------------------------
 *
 * DIBNumColors --
 *
 *    Calculates the number of entries in the color table, given by
 *    LPSTR lpbi - pointer to the CF_DIB memory block.  Used by
 *    titlebar icon code.
 *
 * Results:
 *
 *      WORD - Number of entries in the color table.
 *
 * Side effects: None.
 *
 *
 *----------------------------------------------------------------------
 */
static WORD 
DIBNumColors( LPSTR lpbi )
{
    WORD wBitCount;
    DWORD dwClrUsed;

    dwClrUsed = ((LPBITMAPINFOHEADER) lpbi)->biClrUsed;

    if (dwClrUsed)
      return (WORD) dwClrUsed;

    wBitCount = ((LPBITMAPINFOHEADER) lpbi)->biBitCount;

    switch (wBitCount)
    {
      case 1: return 2;
      case 4: return 16;
      case 8:     return 256;
      default:return 0;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * PaletteSize --
 *
 *    Calculates the number of bytes in the color table, as given by
 *    LPSTR lpbi - pointer to the CF_DIB memory block.  Used by
 *    titlebar icon code.
 *
 * Results:
 *    number of bytes in the color table
 *
 * Side effects: None.
 *
 *
 *----------------------------------------------------------------------
 */
static WORD 
PaletteSize( LPSTR lpbi )
{
    return ((WORD)( DIBNumColors( lpbi ) * sizeof( RGBQUAD )) );
}

/*
 *----------------------------------------------------------------------
 *
 * FindDIBits --
 *
 *    Locate the image bits in a CF_DIB format DIB, as given by
 *    LPSTR lpbi - pointer to the CF_DIB memory block.  Used by
 *    titlebar icon code.
 *
 * Results:
 *    pointer to the image bits
 *
 * Side effects: None
 *
 *
 *----------------------------------------------------------------------
 */
static LPSTR 
FindDIBBits( LPSTR lpbi )
{
   return ( lpbi + *(LPDWORD)lpbi + PaletteSize( lpbi ) );
}

/*
 *----------------------------------------------------------------------
 *
 * BytesPerLine --
 *
 *    Calculates the number of bytes in one scan line, as given by
 *    LPBITMAPINFOHEADER lpBMIH - pointer to the BITMAPINFOHEADER
 *    that begins the CF_DIB block.  Used by titlebar icon code.
 *
 * Results:
 *    number of bytes in one scan line (DWORD aligned)
 *
 * Side effects: None
 *
 *
 *----------------------------------------------------------------------
 */
static DWORD 
BytesPerLine( LPBITMAPINFOHEADER lpBMIH )
{
    return WIDTHBYTES(lpBMIH->biWidth * lpBMIH->biPlanes * lpBMIH->biBitCount);
}

/*
 *----------------------------------------------------------------------
 *
 * AdjustIconImagePointers --
 *
 *    Adjusts internal pointers in icon resource struct, as given
 *    by LPICONIMAGE lpImage - the resource to handle.  Used by
 *    titlebar icon code.
 *
 * Results:
 *    BOOL - TRUE for success, FALSE for failure
 *
 * Side effects:
 *
 *
 *----------------------------------------------------------------------
 */
static BOOL 
AdjustIconImagePointers( LPICONIMAGE lpImage )
{
    /*  Sanity check */
    if (lpImage==NULL)
      return FALSE;
    /*  BITMAPINFO is at beginning of bits */
    lpImage->lpbi = (LPBITMAPINFO)lpImage->lpBits;
    /*  Width - simple enough */
    lpImage->Width = lpImage->lpbi->bmiHeader.biWidth;
    /* 
     * Icons are stored in funky format where height is doubled 
     * so account for that 
     */
    lpImage->Height = (lpImage->lpbi->bmiHeader.biHeight)/2;
    /*  How many colors? */
    lpImage->Colors = lpImage->lpbi->bmiHeader.biPlanes * 
                            lpImage->lpbi->bmiHeader.biBitCount;
    /*  XOR bits follow the header and color table */
    lpImage->lpXOR = (LPBYTE)FindDIBBits(((LPSTR)lpImage->lpbi));
    /*  AND bits follow the XOR bits */
    lpImage->lpAND = lpImage->lpXOR + (lpImage->Height*
            BytesPerLine((LPBITMAPINFOHEADER)(lpImage->lpbi)));
    return TRUE;
}

/*
 *----------------------------------------------------------------------
 *
 * MakeIconOrCursorFromResource --
 *
 *    Construct an actual HICON structure from the information
 *    in a resource.
 *
 * Results:
 *
 *
 * Side effects:
 *
 *
 *----------------------------------------------------------------------
 */
static HICON 
MakeIconOrCursorFromResource(LPICONIMAGE lpIcon, BOOL isIcon) {
    HICON hIcon ;
    static FARPROC pfnCreateIconFromResourceEx=NULL;
    static int initinfo=0;
    /*  Sanity Check */
    if (lpIcon == NULL)
      return NULL;
    if (lpIcon->lpBits == NULL)
      return NULL;
    if (!initinfo) {
      HMODULE hMod = GetModuleHandleA("USER32.DLL");
      initinfo=1;
      if (hMod){
          pfnCreateIconFromResourceEx = 
            GetProcAddress(hMod, "CreateIconFromResourceEx");
      }
    }
    /*  Let the OS do the real work :) */
    if (pfnCreateIconFromResourceEx!=NULL) {
      hIcon = (HICON) (pfnCreateIconFromResourceEx)
      (lpIcon->lpBits, lpIcon->dwNumBytes, isIcon, 0x00030000,
       (*(LPBITMAPINFOHEADER)(lpIcon->lpBits)).biWidth,
       (*(LPBITMAPINFOHEADER)(lpIcon->lpBits)).biHeight/2, 0);
    } else {
       hIcon = NULL;
    }
    /*  It failed, odds are good we're on NT so try the non-Ex way */
    if (hIcon == NULL)    {
      /*  We would break on NT if we try with a 16bpp image */
      if (lpIcon->lpbi->bmiHeader.biBitCount != 16) {
          hIcon = CreateIconFromResource(lpIcon->lpBits, lpIcon->dwNumBytes, 
                                 isIcon, 0x00030000);
      }
    }
    return hIcon;
}

/*
 *----------------------------------------------------------------------
 *
 * ReadICOHeader --
 *
 *    Reads the header from an ICO file, as specfied by channel.
 *
 * Results:
 *    UINT - Number of images in file, -1 for failure.
 *    If this succeeds, there is a decent chance this is a
 *    valid icon file.
 *
 * Side effects:
 *
 *
 *----------------------------------------------------------------------
 */
static int 
ReadICOHeader( Tcl_Channel channel )
{
    WORD    Input;
    DWORD   dwBytesRead;

    /*  Read the 'reserved' WORD */
    dwBytesRead = Tcl_Read( channel, (char*)&Input, sizeof( WORD ));
    /*  Did we get a WORD? */
    if (dwBytesRead != sizeof( WORD ))
      return -1;
    /*  Was it 'reserved' ?   (ie 0) */
    if (Input != 0)
      return -1;
    /*  Read the type WORD */
    dwBytesRead = Tcl_Read( channel, (char*)&Input, sizeof( WORD ));
    /*  Did we get a WORD? */
    if (dwBytesRead != sizeof( WORD ))
      return -1;
    /*  Was it type 1? */
    if (Input != 1)
      return -1;
    /*  Get the count of images */
    dwBytesRead = Tcl_Read( channel, (char*)&Input, sizeof( WORD ));
    /*  Did we get a WORD? */
    if (dwBytesRead != sizeof( WORD ))
      return -1;
    /*  Return the count */
    return (int)Input;
}

/*
 *----------------------------------------------------------------------
 *
 * InitWindowClass --
 *
 *    This routine creates the Wm toplevel decorative frame class.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Registers a new window class.
 *
 *----------------------------------------------------------------------
 */
static int 
InitWindowClass(WinIconPtr titlebaricon) {
    ThreadSpecificData *tsdPtr = (ThreadSpecificData *) 
          Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (! tsdPtr->initialized) {
      tsdPtr->initialized = 1;
      tsdPtr->firstWindow = 1;
      tsdPtr->iconPtr = NULL;
    }
    if (! initialized) {
      Tcl_MutexLock(&winWmMutex);
      if (! initialized) {
          Tcl_DString classString;
          WNDCLASS class;
          initialized = 1;

          if (shgetfileinfoProc == NULL) {
            HINSTANCE hInstance = LoadLibraryA("shell32");
            if (hInstance != NULL) {
                shgetfileinfoProc = 
                (DWORD* (WINAPI *) (LPCTSTR pszPath, DWORD dwFileAttributes,
    SHFILEINFO* psfi, UINT cbFileInfo, UINT uFlags)) GetProcAddress(hInstance, 
                  "SHGetFileInfo");
                FreeLibrary(hInstance);
            }
          }
          /*
           * The only difference between WNDCLASSW and WNDCLASSA are
           * in pointers, so we can use the generic structure WNDCLASS.
           */
          ZeroMemory(&class, sizeof(WNDCLASS));

          /*
           * When threads are enabled, we cannot use CLASSDC because
           * threads will then write into the same device context.
           *
           * This is a hack; we should add a subsystem that manages
           * device context on a per-thread basis.  See also tkWinX.c,
           * which also initializes a WNDCLASS structure.
           */

#ifdef TCL_THREADS
          class.style = CS_HREDRAW | CS_VREDRAW;
#else
          class.style = CS_HREDRAW | CS_VREDRAW | CS_CLASSDC;
#endif
          class.hInstance = Tk_GetHINSTANCE();
          Tcl_WinUtfToTChar(TK_WIN_TOPLEVEL_CLASS_NAME, -1, &classString);
          class.lpszClassName = (LPCTSTR) Tcl_DStringValue(&classString);
          class.lpfnWndProc = WmProc;
          if (titlebaricon == NULL) {
            class.hIcon = LoadIcon(Tk_GetHINSTANCE(), "tk");
          } else {
            class.hIcon = GetIcon(titlebaricon, ICON_BIG);
            if (class.hIcon == NULL) {
                return TCL_ERROR;
            }
            /*
             * Store pointer to default icon so we know when
             * we need to free that information
             */
            tsdPtr->iconPtr = titlebaricon;
          }
          class.hCursor = LoadCursor(NULL, IDC_ARROW);

          if (!(*tkWinProcs->registerClass)(&class)) {
            panic("Unable to register TkTopLevel class");
          }
          Tcl_DStringFree(&classString);
      }
      Tcl_MutexUnlock(&winWmMutex);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * InitWm --
 *
 *    This initialises the window manager
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Registers a new window class.
 *
 *----------------------------------------------------------------------
 */
static void
InitWm(void)
{
    /* Ignore return result */
    (void) InitWindowClass(NULL);
}

/*
 *----------------------------------------------------------------------
 *
 * WinSetIcon --
 *
 *    Sets either the default toplevel titlebar icon, or the icon
 *    for a specific toplevel (if tkw is given, then only that
 *    window is used).
 *
 *    The ref-count of the titlebaricon is NOT changed.  If this
 *    function returns successfully, the caller should assume
 *    the icon was used (and therefore the ref-count should
 *    be adjusted to reflect that fact).  If the function returned
 *    an error, the caller should assume the icon was not used
 *    (and may wish to free the memory associated with it).
 *
 * Results:
 *    A standard Tcl return code.
 *
 * Side effects:
 *    One or all windows may have their icon changed.
 *    The Tcl result may be modified.
 *    The window-manager will be initialised if it wasn't already.
 *    The given window will be forced into existence.
 *
 *----------------------------------------------------------------------
 */
static int
WinSetIcon(interp, titlebaricon, tkw)
    Tcl_Interp *interp;
    WinIconPtr titlebaricon;
    Tk_Window tkw;
{
    WmInfo *wmPtr;
    HWND hwnd;
    int application = 0;

    if (tkw == NULL) {
        tkw = Tk_MainWindow(interp);
      application = 1;
    }

    if (!(Tk_IsTopLevel(tkw))) {
      Tcl_AppendResult(interp, "window \"", Tk_PathName(tkw),
            "\" isn't a top-level window", (char *) NULL);
      return TCL_ERROR;
    }
    if (Tk_WindowId(tkw) == None) {
      Tk_MakeWindowExist(tkw);
    }
    /* We must get the window's wrapper, not the window itself */
    wmPtr = ((TkWindow*)tkw)->wmInfoPtr;
    hwnd = wmPtr->wrapper;

    if (application) {
      if (hwnd == NULL) {
          /*
           * I don't actually think this is ever the correct thing, unless
           * perhaps the window doesn't have a wrapper.  But I believe all
           * windows have wrappers.
           */
          hwnd = Tk_GetHWND(Tk_WindowId(tkw));
      }
      /*
       * If we aren't initialised, then just initialise with the user's
       * icon.  Otherwise our icon choice will be ignored moments later
       * when Tk finishes initialising.
       */
      if (!initialized) {
          if (InitWindowClass(titlebaricon) != TCL_OK) {
            Tcl_AppendResult(interp,"Unable to set icon", (char*)NULL);
            return TCL_ERROR;
          }
      } else {
          ThreadSpecificData *tsdPtr;
          if (
#ifdef _WIN64
            !SetClassLongPtr(hwnd, GCLP_HICONSM,
                  (LPARAM)GetIcon(titlebaricon, ICON_SMALL))
#else
            !SetClassLong(hwnd, GCL_HICONSM,
                  (LPARAM)GetIcon(titlebaricon, ICON_SMALL))
#endif
            ) {
            /*
             * For some reason this triggers, even though it seems
             * to be successful This is probably related to the
             * WNDCLASS vs WNDCLASSEX difference.  Anyway it seems
             * we have to ignore errors returned here.
             */

            /*
             * Tcl_AppendResult(interp,"Unable to set new small icon", (char*)NULL);
             * return TCL_ERROR;
             */
          }
          if (
#ifdef _WIN64
            !SetClassLongPtr(hwnd, GCLP_HICON,
                  (LPARAM)GetIcon(titlebaricon, ICON_BIG))
#else
            !SetClassLong(hwnd, GCL_HICON,
                  (LPARAM)GetIcon(titlebaricon, ICON_BIG))
#endif
            ) {
            Tcl_AppendResult(interp,"Unable to set new icon", (char*)NULL);
            return TCL_ERROR;
          }
          tsdPtr = (ThreadSpecificData *)
                Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
          if (tsdPtr->iconPtr != NULL) {
            DecrIconRefCount(tsdPtr->iconPtr);
          }
          tsdPtr->iconPtr = titlebaricon;
      }
    } else {
      if (!initialized) {
          /*
           * Need to initialise the wm otherwise we will fail on
           * code which tries to set a toplevel's icon before that
           * happens.  Ignore return result.
           */
          (void)InitWindowClass(NULL);
      }
      /*
       * The following code is exercised if you do
       *
       *   toplevel .t ; wm titlebaricon .t foo.icr
       *
       * i.e. the wm hasn't had time to properly create
       * the '.t' window before you set the icon.
       */
      if (hwnd == NULL) {
          /*
           * This little snippet is copied from the 'Map' function,
           * and should probably be placed in one proper location
           */
          UpdateWrapper(wmPtr->winPtr);
          wmPtr = ((TkWindow*)tkw)->wmInfoPtr;
          hwnd = wmPtr->wrapper;
          if (hwnd == NULL) {
            Tcl_AppendResult(interp,
                  "Can't set icon; window has no wrapper.", (char*)NULL);
            return TCL_ERROR;
          }
      }
      SendMessage(hwnd, WM_SETICON, ICON_SMALL,
            (LPARAM) GetIcon(titlebaricon, ICON_SMALL));
      SendMessage(hwnd, WM_SETICON, ICON_BIG,
            (LPARAM) GetIcon(titlebaricon, ICON_BIG));

      /* Update the iconPtr we keep for each WmInfo structure. */
      if (wmPtr->iconPtr != NULL) {
          /* Free any old icon ptr which is associated with this window. */
          DecrIconRefCount(wmPtr->iconPtr);
      }
      /*
       * We do not need to increment the ref count for the
       * titlebaricon, because it was already incremented when we
       * retrieved it.
       */
      wmPtr->iconPtr = titlebaricon;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * ReadIconFromFile --
 *
 *    Read the contents of a file (usually .ico, .icr) and extract an
 *    icon resource, if possible, otherwise check if the shell has an
 *    icon assigned to the given file and use that.  If both of those
 *    fail, then NULL is returned, and an error message will already be
 *    in the interpreter.
 *    
 * Results:
 *    A WinIconPtr structure containing the icons in the file, with
 *    its ref count already incremented. The calling procedure should
 *    either place this structure inside a WmInfo structure, or it should
 *    pass it on to DecrIconRefCount() to ensure no memory leaks occur.
 *
 *    If the given fileName did not contain a valid icon structure,
 *    return NULL.
 *
 * Side effects:
 *    Memory is allocated for the returned structure and the icons
 *    it contains.  If the structure is not wanted, it should be
 *    passed to DecrIconRefCount, and in any case a valid ref count
 *    should be ensured to avoid memory leaks.
 *
 *    Currently icon resources are not shared, so the ref count of
 *    one of these structures will always be 0 or 1.  However all we
 *    need do is implement some sort of lookup function between
 *    filenames and WinIconPtr structures and no other code will need
 *    to be changed.  The pseudo-code for this is implemented below
 *    in the 'if (0)' branch.  It did not seem necessary to implement
 *    this optimisation here, since moving to icon<->image
 *    conversions will probably make it obsolete.
 *
 *----------------------------------------------------------------------
 */
static WinIconPtr
ReadIconFromFile(interp, fileName)
    Tcl_Interp *interp;
    Tcl_Obj *fileName;
{
    WinIconPtr titlebaricon = NULL;

    if (0 /* If we already have an icon for this filename */) {
      titlebaricon = NULL; /* Get the real value from a lookup */
      titlebaricon->refCount++;
      return titlebaricon;
    } else {
      /* First check if it is a .ico file */
      BlockOfIconImagesPtr lpIR;
      lpIR = ReadIconOrCursorFromFile(interp, fileName, TRUE);
      
      /* Then see if we can ask the shell for the icon for this file */
      if (lpIR == NULL && shgetfileinfoProc != NULL) {
          SHFILEINFO sfi;
          Tcl_DString ds, ds2;
          DWORD *res;
          CONST char *file;
          
          file = Tcl_TranslateFileName(interp, Tcl_GetString(fileName), &ds);
          if (file == NULL) { return NULL; }
          Tcl_UtfToExternalDString(NULL, file, -1, &ds2);
          Tcl_DStringFree(&ds);
          
          res = (*shgetfileinfoProc)(Tcl_DStringValue(&ds2), 0, &sfi, 
                    sizeof(SHFILEINFO), SHGFI_SMALLICON|SHGFI_ICON);
         
          Tcl_DStringFree(&ds2);
          
          if (res != 0) {
            Tcl_ResetResult(interp);
                        
            lpIR = (BlockOfIconImagesPtr) ckalloc(sizeof(BlockOfIconImages));
            if (lpIR == NULL) {
                DestroyIcon(sfi.hIcon);
                return NULL;
            }
          
            lpIR->nNumImages = 1;
            lpIR->IconImages[0].Width = 16;
            lpIR->IconImages[0].Height = 16;
            lpIR->IconImages[0].Colors = 4;
            lpIR->IconImages[0].hIcon = sfi.hIcon;
            /* These fields are ignored */
            lpIR->IconImages[0].lpBits = 0;
            lpIR->IconImages[0].dwNumBytes = 0;
            lpIR->IconImages[0].lpXOR = 0;
            lpIR->IconImages[0].lpAND = 0;
          }
      }
      if (lpIR != NULL) {
          titlebaricon = (WinIconPtr) ckalloc(sizeof(WinIconInstance));
          titlebaricon->iconBlock = lpIR;
          titlebaricon->refCount = 1;
      }
      return titlebaricon;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * GetIconFromPixmap --
 *
 *    Turn a Tk Pixmap (i.e. a bitmap) into an icon resource, if
 *    possible, otherwise NULL is returned.
 *
 * Results:
 *    A WinIconPtr structure containing a conversion of the given
 *    bitmap into an icon, with its ref count already incremented.  The
 *    calling procedure should either place this structure inside a
 *    WmInfo structure, or it should pass it on to DecrIconRefCount()
 *    to ensure no memory leaks occur.
 *    
 *    If the given pixmap did not contain a valid icon structure,
 *    return NULL.
 *
 * Side effects:
 *    Memory is allocated for the returned structure and the icons
 *    it contains.  If the structure is not wanted, it should be
 *    passed to DecrIconRefCount, and in any case a valid ref count
 *    should be ensured to avoid memory leaks.
 *    
 *    Currently icon resources are not shared, so the ref count of
 *    one of these structures will always be 0 or 1.  However all we
 *    need do is implement some sort of lookup function between
 *    pixmaps and WinIconPtr structures and no other code will need
 *    to be changed.
 *
 *----------------------------------------------------------------------
 */
static WinIconPtr       
GetIconFromPixmap(dsPtr, pixmap)
    Display *dsPtr;
    Pixmap pixmap;
{
    WinIconPtr titlebaricon = NULL;
    TkWinDrawable* twdPtr = (TkWinDrawable*) pixmap;
    
    if (twdPtr == NULL) {
        return NULL;
    }
    
    if (0 /* If we already have an icon for this pixmap */) {
      titlebaricon = NULL; /* Get the real value from a lookup */
      titlebaricon->refCount++;
      return titlebaricon;
    } else {
      BlockOfIconImagesPtr lpIR;
      ICONINFO icon;
      HICON hIcon;
      int width, height;

      Tk_SizeOfBitmap(dsPtr, pixmap, &width, &height);
    
      icon.fIcon = TRUE;
      icon.xHotspot = 0;
      icon.yHotspot = 0;
      icon.hbmMask = twdPtr->bitmap.handle;
      icon.hbmColor = twdPtr->bitmap.handle;

      hIcon = CreateIconIndirect(&icon);
      if (hIcon == NULL) {
          return NULL;
      }

      lpIR = (BlockOfIconImagesPtr) ckalloc(sizeof(BlockOfIconImages));
      if (lpIR == NULL) {
          DestroyIcon(hIcon);
          return NULL;
      }
      
      lpIR->nNumImages = 1;
      lpIR->IconImages[0].Width = width;
      lpIR->IconImages[0].Height = height;
      lpIR->IconImages[0].Colors = 1 << twdPtr->bitmap.depth;
      lpIR->IconImages[0].hIcon = hIcon;
      /* These fields are ignored */
      lpIR->IconImages[0].lpBits = 0;
      lpIR->IconImages[0].dwNumBytes = 0;
      lpIR->IconImages[0].lpXOR = 0;
      lpIR->IconImages[0].lpAND = 0;
      
      titlebaricon = (WinIconPtr) ckalloc(sizeof(WinIconInstance));
      titlebaricon->iconBlock = lpIR;
      titlebaricon->refCount = 1;
      return titlebaricon;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * DecrIconRefCount --
 *
 *    Reduces the reference count.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    If the ref count falls to zero, free the memory associated
 *    with the icon resource structures.  In this case the pointer
 *    passed into this function is no longer valid.
 *
 *----------------------------------------------------------------------
 */
static void 
DecrIconRefCount(WinIconPtr titlebaricon) {
    titlebaricon->refCount--;

    if (titlebaricon->refCount <= 0) {
      if (titlebaricon->iconBlock != NULL) {
          FreeIconBlock(titlebaricon->iconBlock);
      }
      titlebaricon->iconBlock = NULL;

      ckfree((char*)titlebaricon);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * FreeIconBlock --
 *
 *    Frees all memory associated with a previously loaded
 *    titlebaricon.  The icon block pointer is no longer
 *    valid once this function returns.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *
 *
 *----------------------------------------------------------------------
 */
static void 
FreeIconBlock(BlockOfIconImagesPtr lpIR) {
    int i;

    /* Free all the bits */
    for (i=0; i< lpIR->nNumImages; i++) {
      if (lpIR->IconImages[i].lpBits != NULL) {
          ckfree((char*)lpIR->IconImages[i].lpBits);
      }
      if (lpIR->IconImages[i].hIcon != NULL) {
          DestroyIcon(lpIR->IconImages[i].hIcon);
      }
    }
    ckfree ((char*)lpIR);
}

/*
 *----------------------------------------------------------------------
 *
 * GetIcon --
 *
 *    Extracts an icon of a given size from an icon resource
 *
 * Results:
 *    Returns the icon, if found, else NULL.
 *
 * Side effects:
 *
 *
 *----------------------------------------------------------------------
 */
static HICON 
GetIcon(WinIconPtr titlebaricon, int icon_size) {
    BlockOfIconImagesPtr lpIR;
    
    if (titlebaricon == NULL) {
        return NULL;
    }

    lpIR = titlebaricon->iconBlock;
    if (lpIR == NULL) {
      return NULL;
    } else {
      unsigned int size = (icon_size == 0 ? 16 : 32);
      int i;

      for (i = 0; i < lpIR->nNumImages; i++) {
          /* Take the first or a 32x32 16 color icon*/
          if ((lpIR->IconImages[i].Height == size)
             && (lpIR->IconImages[i].Width == size)
             && (lpIR->IconImages[i].Colors >= 4)) {
            return lpIR->IconImages[i].hIcon;
          }
      }

      /* 
       * If we get here, then just return the first one, 
       * it will have to do!
       */
      if (lpIR->nNumImages >= 1) {
          return lpIR->IconImages[0].hIcon;
      }
    }
    return NULL;
}

static HCURSOR 
TclWinReadCursorFromFile(Tcl_Interp* interp, Tcl_Obj* fileName) {
    BlockOfIconImagesPtr lpIR;
    HICON res = NULL;
    
    lpIR = ReadIconOrCursorFromFile(interp, fileName, FALSE);
    if (lpIR == NULL) {
        return NULL;
    }
    if (lpIR->nNumImages >= 1) {
      res = CopyImage(lpIR->IconImages[0].hIcon, IMAGE_CURSOR,0,0,0);
    }
    FreeIconBlock(lpIR);
    return res;
}

/*
 *----------------------------------------------------------------------
 *
 * ReadIconOrCursorFromFile --
 *
 *    Reads an Icon Resource from an ICO file, as given by
 *    char* fileName - Name of the ICO file. This name should
 *    be in Utf format.
 *
 * Results:
 *    Returns an icon resource, if found, else NULL.
 *
 * Side effects:
 *      May leave error messages in the Tcl interpreter.
 *
 *----------------------------------------------------------------------
 */
static BlockOfIconImagesPtr 
ReadIconOrCursorFromFile(Tcl_Interp* interp, Tcl_Obj* fileName, BOOL isIcon) {
    BlockOfIconImagesPtr lpIR, lpNew;
    Tcl_Channel          channel;
    int                  i;
    DWORD                dwBytesRead;
    LPICONDIRENTRY       lpIDE;

    /*  Open the file */
    channel = Tcl_FSOpenFileChannel(interp, fileName, "r", 0);
    if (channel == NULL) {
      Tcl_AppendResult(interp,"Error opening file \"", 
                   Tcl_GetString(fileName), 
                       "\" for reading",(char*)NULL);
      return NULL;
    }
    if (Tcl_SetChannelOption(interp, channel, "-translation", "binary")
          != TCL_OK) {
      Tcl_Close(NULL, channel);
      return NULL;
    }
    if (Tcl_SetChannelOption(interp, channel, "-encoding", "binary")
          != TCL_OK) {
      Tcl_Close(NULL, channel);
      return NULL;
    }
    /*  Allocate memory for the resource structure */
    lpIR = (BlockOfIconImagesPtr) ckalloc(sizeof(BlockOfIconImages));
    if (lpIR == NULL)    {
      Tcl_AppendResult(interp,"Error allocating memory",(char*)NULL);
      Tcl_Close(NULL, channel);
      return NULL;
    }
    /*  Read in the header */
    if ((lpIR->nNumImages = ReadICOHeader( channel )) == -1)    {
      Tcl_AppendResult(interp,"Invalid file header",(char*)NULL);
      Tcl_Close(NULL, channel);
      ckfree((char*) lpIR );
      return NULL;
    }
    /*  Adjust the size of the struct to account for the images */
    lpNew = (BlockOfIconImagesPtr) ckrealloc((char*)lpIR, 
      sizeof(BlockOfIconImages) + ((lpIR->nNumImages-1) * sizeof(ICONIMAGE)));
    if (lpNew == NULL) {
      Tcl_AppendResult(interp,"Error allocating memory",(char*)NULL);
      Tcl_Close(NULL, channel);
      ckfree( (char*)lpIR );
      return NULL;
    }
    lpIR = lpNew;
    /*  Allocate enough memory for the icon directory entries */
    lpIDE = (LPICONDIRENTRY) ckalloc(lpIR->nNumImages * sizeof(ICONDIRENTRY));
    if (lpIDE == NULL) {
      Tcl_AppendResult(interp,"Error allocating memory",(char*)NULL);
      Tcl_Close(NULL, channel);
      ckfree( (char*)lpIR );
      return NULL;
    }
    /*  Read in the icon directory entries */
    dwBytesRead = Tcl_Read(channel, (char*)lpIDE, 
                     lpIR->nNumImages * sizeof( ICONDIRENTRY ));
    if (dwBytesRead != lpIR->nNumImages * sizeof( ICONDIRENTRY ))    {
      Tcl_AppendResult(interp,"Error reading file",(char*)NULL);
      Tcl_Close(NULL, channel);
      ckfree( (char*)lpIR );
      return NULL;
    }
    /*  Loop through and read in each image */
    for( i = 0; i < lpIR->nNumImages; i++ )    {
      /*  Allocate memory for the resource */
      lpIR->IconImages[i].lpBits = (LPBYTE) ckalloc(lpIDE[i].dwBytesInRes);
      if (lpIR->IconImages[i].lpBits == NULL) {
          Tcl_AppendResult(interp,"Error allocating memory",(char*)NULL);
          Tcl_Close(NULL, channel);
          ckfree( (char*)lpIR );
          ckfree( (char*)lpIDE );
          return NULL;
      }
      lpIR->IconImages[i].dwNumBytes = lpIDE[i].dwBytesInRes;
      /*  Seek to beginning of this image */
      if (Tcl_Seek(channel, lpIDE[i].dwImageOffset, FILE_BEGIN) == -1) {
          Tcl_AppendResult(interp,"Error seeking in file",(char*)NULL);
          Tcl_Close(NULL, channel);
          ckfree( (char*)lpIR );
          ckfree( (char*)lpIDE );
          return NULL;
      }
      /*  Read it in */
      dwBytesRead = Tcl_Read( channel, lpIR->IconImages[i].lpBits, 
                         lpIDE[i].dwBytesInRes);
      if (dwBytesRead != lpIDE[i].dwBytesInRes) {
          Tcl_AppendResult(interp,"Error reading file",(char*)NULL);
          Tcl_Close(NULL, channel);
          ckfree( (char*)lpIDE );
          ckfree( (char*)lpIR );
          return NULL;
      }
      /*  Set the internal pointers appropriately */
      if (!AdjustIconImagePointers( &(lpIR->IconImages[i]))) {
          Tcl_AppendResult(interp,"Error converting to internal format",
                       (char*)NULL);
          Tcl_Close(NULL, channel);
          ckfree( (char*)lpIDE );
          ckfree( (char*)lpIR );
          return NULL;
      }
      lpIR->IconImages[i].hIcon =
          MakeIconOrCursorFromResource(&(lpIR->IconImages[i]), isIcon);
    }
    /*  Clean up */
    ckfree((char*)lpIDE);
    Tcl_Close(NULL, channel);
    if (lpIR == NULL){
      Tcl_AppendResult(interp,"Reading of ", Tcl_GetString(fileName),
      " failed!",(char*)NULL);
      return NULL;
    }
    return lpIR;
}

/*
 *----------------------------------------------------------------------
 *
 * GetTopLevel --
 *
 *    This function retrieves the TkWindow associated with the
 *    given HWND.
 *
 * Results:
 *    Returns the matching TkWindow.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */
static TkWindow *
GetTopLevel(hwnd)
    HWND hwnd;
{
    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
            Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    /*
     * If this function is called before the CreateWindowEx call
     * has completed, then the user data slot will not have been
     * set yet, so we use the global createWindow variable.
     */

    if (tsdPtr->createWindow) {
      return tsdPtr->createWindow;
    }
#ifdef _WIN64
    return (TkWindow *) GetWindowLongPtr(hwnd, GWLP_USERDATA);
#else
    return (TkWindow *) GetWindowLong(hwnd, GWL_USERDATA);
#endif
}

/*
 *----------------------------------------------------------------------
 *
 * SetLimits --
 *
 *    Updates the minimum and maximum window size constraints.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Changes the values of the info pointer to reflect the current
 *    minimum and maximum size values.
 *
 *----------------------------------------------------------------------
 */

static void
SetLimits(hwnd, info)
    HWND hwnd;
    MINMAXINFO *info;
{
    register WmInfo *wmPtr;
    int maxWidth, maxHeight;
    int minWidth, minHeight;
    int base;
    TkWindow *winPtr = GetTopLevel(hwnd);

    if (winPtr == NULL) {
      return;
    }

    wmPtr = winPtr->wmInfoPtr;

    /*
     * Copy latest constraint info.
     */

    wmPtr->defMinWidth = info->ptMinTrackSize.x;
    wmPtr->defMinHeight = info->ptMinTrackSize.y;
    wmPtr->defMaxWidth = info->ptMaxTrackSize.x;
    wmPtr->defMaxHeight = info->ptMaxTrackSize.y;

    GetMaxSize(wmPtr, &maxWidth, &maxHeight);
    GetMinSize(wmPtr, &minWidth, &minHeight);

    if (wmPtr->gridWin != NULL) {
      base = winPtr->reqWidth - (wmPtr->reqGridWidth * wmPtr->widthInc);
      if (base < 0) {
          base = 0;
      }
      base += wmPtr->borderWidth;
      info->ptMinTrackSize.x = base + (minWidth * wmPtr->widthInc);
      info->ptMaxTrackSize.x = base + (maxWidth * wmPtr->widthInc);

      base = winPtr->reqHeight - (wmPtr->reqGridHeight * wmPtr->heightInc);
      if (base < 0) {
          base = 0;
      }
      base += wmPtr->borderHeight;
      info->ptMinTrackSize.y = base + (minHeight * wmPtr->heightInc);
      info->ptMaxTrackSize.y = base + (maxHeight * wmPtr->heightInc);
    } else {
      info->ptMaxTrackSize.x = maxWidth + wmPtr->borderWidth;
      info->ptMaxTrackSize.y = maxHeight + wmPtr->borderHeight;
      info->ptMinTrackSize.x = minWidth + wmPtr->borderWidth;
      info->ptMinTrackSize.y = minHeight + wmPtr->borderHeight;
    }

    /*
     * If the window isn't supposed to be resizable, then set the
     * minimum and maximum dimensions to be the same as the current size.
     */

    if (!(wmPtr->flags & WM_SYNC_PENDING)) {
      if (wmPtr->flags & WM_WIDTH_NOT_RESIZABLE) {
          info->ptMinTrackSize.x = winPtr->changes.width
            + wmPtr->borderWidth;
          info->ptMaxTrackSize.x = info->ptMinTrackSize.x;
      }
      if (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE) {
          info->ptMinTrackSize.y = winPtr->changes.height
            + wmPtr->borderHeight;
          info->ptMaxTrackSize.y = info->ptMinTrackSize.y;
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWinWmCleanup --
 *
 *    Unregisters classes registered by the window manager. This is
 *    called from the DLL main entry point when the DLL is unloaded.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The window classes are discarded.
 *
 *----------------------------------------------------------------------
 */

void
TkWinWmCleanup(hInstance)
    HINSTANCE hInstance;
{
    ThreadSpecificData *tsdPtr;

    /*
     * If we're using stubs to access the Tcl library, and they
     * haven't been initialized, we can't call Tcl_GetThreadData.
     */

#ifdef USE_TCL_STUBS
    if (tclStubsPtr == NULL) {
        return;
    }
#endif

    if (!initialized) {
      return;
    }
    initialized = 0;

    tsdPtr = (ThreadSpecificData *)
            Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (!tsdPtr->initialized) {
        return;
    }
    tsdPtr->initialized = 0;

    UnregisterClass(TK_WIN_TOPLEVEL_CLASS_NAME, hInstance);
}

/*
 *--------------------------------------------------------------
 *
 * TkWmNewWindow --
 *
 *    This procedure is invoked whenever a new top-level
 *    window is created.  Its job is to initialize the WmInfo
 *    structure for the window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    A WmInfo structure gets allocated and initialized.
 *
 *--------------------------------------------------------------
 */

void
TkWmNewWindow(winPtr)
    TkWindow *winPtr;         /* Newly-created top-level window. */
{
    register WmInfo *wmPtr;

    wmPtr = (WmInfo *) ckalloc(sizeof(WmInfo));

    /*
     * Initialize full structure, then set what isn't NULL
     */
    ZeroMemory(wmPtr, sizeof(WmInfo));
    winPtr->wmInfoPtr = wmPtr;
    wmPtr->winPtr = winPtr;
    wmPtr->hints.flags = InputHint | StateHint;
    wmPtr->hints.input = True;
    wmPtr->hints.initial_state = NormalState;
    wmPtr->hints.icon_pixmap = None;
    wmPtr->hints.icon_window = None;
    wmPtr->hints.icon_x = wmPtr->hints.icon_y = 0;
    wmPtr->hints.icon_mask = None;
    wmPtr->hints.window_group = None;

    /*
     * Default the maximum dimensions to the size of the display.
     */

    wmPtr->defMinWidth = wmPtr->defMinHeight = 0;
    wmPtr->defMaxWidth = DisplayWidth(winPtr->display, winPtr->screenNum);
    wmPtr->defMaxHeight = DisplayHeight(winPtr->display, winPtr->screenNum);
    wmPtr->minWidth = wmPtr->minHeight = 1;
    wmPtr->maxWidth = wmPtr->maxHeight = 0;
    wmPtr->widthInc = wmPtr->heightInc = 1;
    wmPtr->minAspect.x = wmPtr->minAspect.y = 1;
    wmPtr->maxAspect.x = wmPtr->maxAspect.y = 1;
    wmPtr->reqGridWidth = wmPtr->reqGridHeight = -1;
    wmPtr->gravity = NorthWestGravity;
    wmPtr->width = -1;
    wmPtr->height = -1;
    wmPtr->x = winPtr->changes.x;
    wmPtr->y = winPtr->changes.y;

    wmPtr->configWidth = -1;
    wmPtr->configHeight = -1;
    wmPtr->flags = WM_NEVER_MAPPED;
    wmPtr->nextPtr = winPtr->dispPtr->firstWmPtr;
    winPtr->dispPtr->firstWmPtr = wmPtr;

    /*
     * Tk must monitor structure events for top-level windows, in order
     * to detect size and position changes caused by window managers.
     */

    Tk_CreateEventHandler((Tk_Window) winPtr, StructureNotifyMask,
          TopLevelEventProc, (ClientData) winPtr);

    /*
     * Arrange for geometry requests to be reflected from the window
     * to the window manager.
     */

    Tk_ManageGeometry((Tk_Window) winPtr, &wmMgrType, (ClientData) 0);
}

/*
 *----------------------------------------------------------------------
 *
 * UpdateWrapper --
 *
 *    This function creates the wrapper window that contains the
 *    window decorations and menus for a toplevel.  This function
 *    may be called after a window is mapped to change the window
 *    style.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Destroys any old wrapper window and replaces it with a newly
 *    created wrapper.
 *
 *----------------------------------------------------------------------
 */

static void
UpdateWrapper(winPtr)
    TkWindow *winPtr;         /* Top-level window to redecorate. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    HWND parentHWND, oldWrapper;
    HWND child;
    int x, y, width, height, state;
    WINDOWPLACEMENT place;
    HICON hSmallIcon = NULL;
    HICON hBigIcon = NULL;
    Tcl_DString titleString, classString;
    int *childStateInfo = NULL;
    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
            Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (winPtr->window == None) {
      /*
       * Ensure existence of the window to update the wrapper for.
       */
      Tk_MakeWindowExist((Tk_Window) winPtr);
    }

    child = TkWinGetHWND(winPtr->window);
    parentHWND = NULL;

    if (winPtr->flags & TK_EMBEDDED) {
      wmPtr->wrapper = (HWND) winPtr->privatePtr;
      if (wmPtr->wrapper == NULL) {
          panic("UpdateWrapper: Cannot find container window");
      }
      if (!IsWindow(wmPtr->wrapper)) {
          panic("UpdateWrapper: Container was destroyed");
      }

    } else {
      /*
       * Pick the decorative frame style.  Override redirect windows get
       * created as undecorated popups.  Transient windows get a modal
       * dialog frame.  Neither override, nor transient windows appear in
       * the Windows taskbar.  Note that a transient window does not resize
       * by default, so we need to explicitly add the WS_THICKFRAME style
       * if we want it to be resizeable.
       */

      if (winPtr->atts.override_redirect) {
          wmPtr->style = WM_OVERRIDE_STYLE;
          wmPtr->exStyle = EX_OVERRIDE_STYLE;
      } else if (wmPtr->masterPtr) {
          wmPtr->style = WM_TRANSIENT_STYLE;
          wmPtr->exStyle = EX_TRANSIENT_STYLE;
          parentHWND = Tk_GetHWND(Tk_WindowId(wmPtr->masterPtr));
          if (! ((wmPtr->flags & WM_WIDTH_NOT_RESIZABLE) &&
                (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE))) {
            wmPtr->style |= WS_THICKFRAME;
          }
      } else {
          wmPtr->style = WM_TOPLEVEL_STYLE;
          wmPtr->exStyle = EX_TOPLEVEL_STYLE;
      }

      wmPtr->style   |= wmPtr->styleConfig;
      wmPtr->exStyle |= wmPtr->exStyleConfig;

      if ((wmPtr->flags & WM_WIDTH_NOT_RESIZABLE)
            && (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE)) {
          wmPtr->style &= ~ (WS_MAXIMIZEBOX | WS_SIZEBOX);
      }

      /*
       * Compute the geometry of the parent and child windows.
       */

      wmPtr->flags |= WM_CREATE_PENDING|WM_MOVE_PENDING;
      UpdateGeometryInfo((ClientData)winPtr);
      wmPtr->flags &= ~(WM_CREATE_PENDING|WM_MOVE_PENDING);

      width = wmPtr->borderWidth + winPtr->changes.width;
      height = wmPtr->borderHeight + winPtr->changes.height;

      /*
       * Set the initial position from the user or program specified
       * location.  If nothing has been specified, then let the system
       * pick a location.
       */

      if (!(wmPtr->sizeHintsFlags & (USPosition | PPosition))
            && (wmPtr->flags & WM_NEVER_MAPPED)) {
          x = CW_USEDEFAULT;
          y = CW_USEDEFAULT;
      } else {
          x = winPtr->changes.x;
          y = winPtr->changes.y;
      }

      /*
       * Create the containing window, and set the user data to point
       * to the TkWindow.
       */

      tsdPtr->createWindow = winPtr;
      Tcl_WinUtfToTChar(((wmPtr->title != NULL) ?
                           wmPtr->title : winPtr->nameUid), -1, &titleString);
      Tcl_WinUtfToTChar(TK_WIN_TOPLEVEL_CLASS_NAME, -1, &classString);
      wmPtr->wrapper = (*tkWinProcs->createWindowEx)(wmPtr->exStyle,
            (LPCTSTR) Tcl_DStringValue(&classString),
            (LPCTSTR) Tcl_DStringValue(&titleString),
            wmPtr->style, x, y, width, height,
            parentHWND, NULL, Tk_GetHINSTANCE(), NULL);
      Tcl_DStringFree(&classString);
      Tcl_DStringFree(&titleString);
#ifdef _WIN64
      SetWindowLongPtr(wmPtr->wrapper, GWLP_USERDATA, (LONG_PTR) winPtr);
#else
      SetWindowLong(wmPtr->wrapper, GWL_USERDATA, (LONG) winPtr);
#endif
      tsdPtr->createWindow = NULL;

      place.length = sizeof(WINDOWPLACEMENT);
      GetWindowPlacement(wmPtr->wrapper, &place);
      wmPtr->x = place.rcNormalPosition.left;
      wmPtr->y = place.rcNormalPosition.top;

      TkInstallFrameMenu((Tk_Window) winPtr);
    }

    /*
     * Now we need to reparent the contained window and set its
     * style appropriately.  Be sure to update the style first so that
     * Windows doesn't try to set the focus to the child window.
     */

#ifdef _WIN64
    SetWindowLongPtr(child, GWL_STYLE,
          WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
#else
    SetWindowLong(child, GWL_STYLE,
          WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
#endif
    if (winPtr->flags & TK_EMBEDDED) {
#ifdef _WIN64
      SetWindowLongPtr(child, GWLP_WNDPROC, (LONG_PTR) TopLevelProc);
#else
      SetWindowLong(child, GWL_WNDPROC, (LONG) TopLevelProc);
#endif
    }
    oldWrapper = SetParent(child, wmPtr->wrapper);
    if (oldWrapper) {
      hSmallIcon = (HICON) SendMessage(oldWrapper, WM_GETICON, ICON_SMALL,
            (LPARAM) NULL);
      hBigIcon = (HICON) SendMessage(oldWrapper, WM_GETICON, ICON_BIG,
            (LPARAM) NULL);
    }

    if (oldWrapper && (oldWrapper != wmPtr->wrapper)
          && (oldWrapper != GetDesktopWindow())) {
#ifdef _WIN64
      SetWindowLongPtr(oldWrapper, GWLP_USERDATA, (LONG) NULL);
#else
      SetWindowLong(oldWrapper, GWL_USERDATA, (LONG) NULL);
#endif

      if (wmPtr->numTransients > 0) {
          /*
           * Unset the current wrapper as the parent for all transient
           * children for whom this is the master
           */
          WmInfo *wmPtr2;

          childStateInfo = (int *)ckalloc((unsigned) wmPtr->numTransients
            * sizeof(int));
          state = 0;
          for (wmPtr2 = winPtr->dispPtr->firstWmPtr; wmPtr2 != NULL;
             wmPtr2 = wmPtr2->nextPtr) {
            if (wmPtr2->masterPtr == winPtr) {
                if (!(wmPtr2->flags & WM_NEVER_MAPPED)) {
                  childStateInfo[state++] = wmPtr2->hints.initial_state;
                  SetParent(TkWinGetHWND(wmPtr2->winPtr->window), NULL);
                }
            }
          }
      }
      /*
       * Remove the menubar before destroying the window so the menubar
       * isn't destroyed.
       */

      SetMenu(oldWrapper, NULL);
      DestroyWindow(oldWrapper);
    }

    wmPtr->flags &= ~WM_NEVER_MAPPED;
    SendMessage(wmPtr->wrapper, TK_ATTACHWINDOW, (WPARAM) child, 0);

    /*
     * Force an initial transition from withdrawn to the real
     * initial state.
     */

    state = wmPtr->hints.initial_state;
    wmPtr->hints.initial_state = WithdrawnState;
    TkpWmSetState(winPtr, state);

    if (hSmallIcon != NULL) {
      SendMessage(wmPtr->wrapper,WM_SETICON,ICON_SMALL,(LPARAM)hSmallIcon);
    }
    if (hBigIcon != NULL) {
      SendMessage(wmPtr->wrapper,WM_SETICON,ICON_BIG,(LPARAM)hBigIcon);
    }

    /*
     * If we are embedded then force a mapping of the window now,
     * because we do not necessarily own the wrapper and may not
     * get another opportunity to map ourselves. We should not be
     * in either iconified or zoomed states when we get here, so
     * it is safe to just check for TK_EMBEDDED without checking
     * what state we are supposed to be in (default to NormalState).
     */

    if (winPtr->flags & TK_EMBEDDED) {
      XMapWindow(winPtr->display, winPtr->window);
    }

    /*
     * Set up menus on the wrapper if required.
     */

    if (wmPtr->hMenu != NULL) {
      wmPtr->flags = WM_SYNC_PENDING;
      SetMenu(wmPtr->wrapper, wmPtr->hMenu);
      wmPtr->flags &= ~WM_SYNC_PENDING;
    }

    if (childStateInfo) {
      if (wmPtr->numTransients > 0) {
          /*
           * Reset all transient children for whom this is the master
           */
          WmInfo *wmPtr2;

          state = 0;
          for (wmPtr2 = winPtr->dispPtr->firstWmPtr; wmPtr2 != NULL;
             wmPtr2 = wmPtr2->nextPtr) {
            if (wmPtr2->masterPtr == winPtr) {
                if (!(wmPtr2->flags & WM_NEVER_MAPPED)) {
                  UpdateWrapper(wmPtr2->winPtr);
                  TkpWmSetState(wmPtr2->winPtr, childStateInfo[state++]);
                }
            }
          }
      }

      ckfree((char *) childStateInfo);
    }

    /*
     * If this is the first window created by the application, then
     * we should activate the initial window.
     */

    if (tsdPtr->firstWindow) {
      tsdPtr->firstWindow = 0;
      SetActiveWindow(wmPtr->wrapper);
    }
}

/*
 *--------------------------------------------------------------
 *
 * TkWmMapWindow --
 *
 *    This procedure is invoked to map a top-level window.  This
 *    module gets a chance to update all window-manager-related
 *    information in properties before the window manager sees
 *    the map event and checks the properties.  It also gets to
 *    decide whether or not to even map the window after all.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Properties of winPtr may get updated to provide up-to-date
 *    information to the window manager.  The window may also get
 *    mapped, but it may not be if this procedure decides that
 *    isn't appropriate (e.g. because the window is withdrawn).
 *
 *--------------------------------------------------------------
 */

void
TkWmMapWindow(winPtr)
    TkWindow *winPtr;         /* Top-level window that's about to
                         * be mapped. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
            Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (!tsdPtr->initialized) {
      InitWm();
    }

    if (wmPtr->flags & WM_NEVER_MAPPED) {
      /*
       * Don't map a transient if the master is not mapped.
       */

      if (wmPtr->masterPtr != NULL &&
              !Tk_IsMapped(wmPtr->masterPtr)) {
          wmPtr->hints.initial_state = WithdrawnState;
          return;
      }
    } else {
      if (wmPtr->hints.initial_state == WithdrawnState) {
          return;
      }

      /*
       * Map the window in either the iconified or normal state.  Note that
       * we only send a map event if the window is in the normal state.
       */

      TkpWmSetState(winPtr, wmPtr->hints.initial_state);
    }

    /*
     * This is the first time this window has ever been mapped.
     * Store all the window-manager-related information for the
     * window.
     */

    UpdateWrapper(winPtr);
}

/*
 *--------------------------------------------------------------
 *
 * TkWmUnmapWindow --
 *
 *    This procedure is invoked to unmap a top-level window.  The
 *    only thing it does special is unmap the decorative frame before
 *    unmapping the toplevel window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Unmaps the decorative frame and the window.
 *
 *--------------------------------------------------------------
 */

void
TkWmUnmapWindow(winPtr)
    TkWindow *winPtr;         /* Top-level window that's about to
                         * be unmapped. */
{
    TkpWmSetState(winPtr, WithdrawnState);
}

/*
 *----------------------------------------------------------------------
 *
 * TkpWmSetState --
 *
 *    Sets the window manager state for the wrapper window of a
 *    given toplevel window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    May maximize, minimize, restore, or withdraw a window.
 *
 *----------------------------------------------------------------------
 */

void
TkpWmSetState(winPtr, state)
     TkWindow *winPtr;        /* Toplevel window to operate on. */
     int state;               /* One of IconicState, ZoomState, NormalState,
                         * or WithdrawnState. */
{
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    int cmd;

    if (wmPtr->flags & WM_NEVER_MAPPED) {
      wmPtr->hints.initial_state = state;
      return;
    }

    wmPtr->flags |= WM_SYNC_PENDING;
    if (state == WithdrawnState) {
      cmd = SW_HIDE;
    } else if (state == IconicState) {
      cmd = SW_SHOWMINNOACTIVE;
    } else if (state == NormalState) {
      cmd = SW_SHOWNOACTIVATE;
    } else if (state == ZoomState) {
      cmd = SW_SHOWMAXIMIZED;
    }

    ShowWindow(wmPtr->wrapper, cmd);
    wmPtr->flags &= ~WM_SYNC_PENDING;
}

/*
 *--------------------------------------------------------------
 *
 * TkWmDeadWindow --
 *
 *    This procedure is invoked when a top-level window is
 *    about to be deleted.  It cleans up the wm-related data
 *    structures for the window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The WmInfo structure for winPtr gets freed up.
 *
 *--------------------------------------------------------------
 */

void
TkWmDeadWindow(winPtr)
    TkWindow *winPtr;         /* Top-level window that's being deleted. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    WmInfo *wmPtr2;

    if (wmPtr == NULL) {
      return;
    }

    /*
     * Clean up event related window info.
     */

    if (winPtr->dispPtr->firstWmPtr == wmPtr) {
      winPtr->dispPtr->firstWmPtr = wmPtr->nextPtr;
    } else {
      register WmInfo *prevPtr;
      for (prevPtr = winPtr->dispPtr->firstWmPtr; ;
           prevPtr = prevPtr->nextPtr) {
          if (prevPtr == NULL) {
            panic("couldn't unlink window in TkWmDeadWindow");
          }
          if (prevPtr->nextPtr == wmPtr) {
            prevPtr->nextPtr = wmPtr->nextPtr;
            break;
          }
      }
    }

    /*
     * Reset all transient windows whose master is the dead window.
     */

    for (wmPtr2 = winPtr->dispPtr->firstWmPtr; wmPtr2 != NULL;
       wmPtr2 = wmPtr2->nextPtr) {
      if (wmPtr2->masterPtr == winPtr) {
          wmPtr->numTransients--;
          Tk_DeleteEventHandler((Tk_Window) wmPtr2->masterPtr,
                  VisibilityChangeMask|StructureNotifyMask,
                  WmWaitVisibilityOrMapProc, (ClientData) wmPtr2->winPtr);
          wmPtr2->masterPtr = NULL;
          if ((wmPtr2->wrapper != None)
                && !(wmPtr2->flags & (WM_NEVER_MAPPED))) {
            UpdateWrapper(wmPtr2->winPtr);
          }
      }
    }
    if (wmPtr->numTransients != 0)
        panic("numTransients should be 0");

    if (wmPtr->title != NULL) {
      ckfree(wmPtr->title);
    }
    if (wmPtr->iconName != NULL) {
      ckfree(wmPtr->iconName);
    }
    if (wmPtr->hints.flags & IconPixmapHint) {
      Tk_FreeBitmap(winPtr->display, wmPtr->hints.icon_pixmap);
    }
    if (wmPtr->hints.flags & IconMaskHint) {
      Tk_FreeBitmap(winPtr->display, wmPtr->hints.icon_mask);
    }
    if (wmPtr->leaderName != NULL) {
      ckfree(wmPtr->leaderName);
    }
    if (wmPtr->icon != NULL) {
      wmPtr2 = ((TkWindow *) wmPtr->icon)->wmInfoPtr;
      wmPtr2->iconFor = NULL;
    }
    if (wmPtr->iconFor != NULL) {
      wmPtr2 = ((TkWindow *) wmPtr->iconFor)->wmInfoPtr;
      wmPtr2->icon = NULL;
      wmPtr2->hints.flags &= ~IconWindowHint;
    }
    while (wmPtr->protPtr != NULL) {
      ProtocolHandler *protPtr;

      protPtr = wmPtr->protPtr;
      wmPtr->protPtr = protPtr->nextPtr;
      Tcl_EventuallyFree((ClientData) protPtr, TCL_DYNAMIC);
    }
    if (wmPtr->cmdArgv != NULL) {
      ckfree((char *) wmPtr->cmdArgv);
    }
    if (wmPtr->clientMachine != NULL) {
      ckfree((char *) wmPtr->clientMachine);
    }
    if (wmPtr->flags & WM_UPDATE_PENDING) {
      Tcl_CancelIdleCall(UpdateGeometryInfo, (ClientData) winPtr);
    }
    if (wmPtr->masterPtr != NULL) {
      wmPtr2 = wmPtr->masterPtr->wmInfoPtr;
      /*
       * If we had a master, tell them that we aren't tied
       * to them anymore
       */
      if (wmPtr2 != NULL) {
          wmPtr2->numTransients--;
      }
      Tk_DeleteEventHandler((Tk_Window) wmPtr->masterPtr,
            VisibilityChangeMask|StructureNotifyMask,
            WmWaitVisibilityOrMapProc, (ClientData) winPtr);
      wmPtr->masterPtr = NULL;
    }

    /*
     * Destroy the decorative frame window.
     */

    if (!(winPtr->flags & TK_EMBEDDED)) {
      if (wmPtr->wrapper != NULL) {
          DestroyWindow(wmPtr->wrapper);
      } else {
          DestroyWindow(Tk_GetHWND(winPtr->window));
      }
    }
    if (wmPtr->iconPtr != NULL) {
      /*
       * This may delete the icon resource data.  I believe we
       * should do this after destroying the decorative frame,
       * because the decorative frame is using this icon.
       */
        DecrIconRefCount(wmPtr->iconPtr);
    }

    ckfree((char *) wmPtr);
    winPtr->wmInfoPtr = NULL;
}

/*
 *--------------------------------------------------------------
 *
 * TkWmSetClass --
 *
 *    This procedure is invoked whenever a top-level window's
 *    class is changed.  If the window has been mapped then this
 *    procedure updates the window manager property for the
 *    class.  If the window hasn't been mapped, the update is
 *    deferred until just before the first mapping.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    A window property may get updated.
 *
 *--------------------------------------------------------------
 */

void
TkWmSetClass(winPtr)
    TkWindow *winPtr;         /* Newly-created top-level window. */
{
    return;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_WmObjCmd --
 *
 *    This procedure is invoked to process the "wm" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

      /* ARGSUSED */
int
Tk_WmObjCmd(clientData, interp, objc, objv)
    ClientData clientData;    /* Main window associated with
                         * interpreter. */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    Tk_Window tkwin = (Tk_Window) clientData;
    static CONST char *optionStrings[] = {
      "aspect", "attributes", "client", "colormapwindows",
      "command", "deiconify", "focusmodel", "frame",
      "geometry", "grid", "group", "iconbitmap",
      "iconify", "iconmask", "iconname", "iconposition",
      "iconwindow", "maxsize", "minsize", "overrideredirect",
        "positionfrom", "protocol", "resizable", "sizefrom",
        "stackorder", "state", "title", "transient",
      "withdraw", (char *) NULL };
    enum options {
        WMOPT_ASPECT, WMOPT_ATTRIBUTES, WMOPT_CLIENT, WMOPT_COLORMAPWINDOWS,
      WMOPT_COMMAND, WMOPT_DEICONIFY, WMOPT_FOCUSMODEL, WMOPT_FRAME,
      WMOPT_GEOMETRY, WMOPT_GRID, WMOPT_GROUP, WMOPT_ICONBITMAP,
      WMOPT_ICONIFY, WMOPT_ICONMASK, WMOPT_ICONNAME, WMOPT_ICONPOSITION,
      WMOPT_ICONWINDOW, WMOPT_MAXSIZE, WMOPT_MINSIZE, WMOPT_OVERRIDEREDIRECT,
        WMOPT_POSITIONFROM, WMOPT_PROTOCOL, WMOPT_RESIZABLE, WMOPT_SIZEFROM,
        WMOPT_STACKORDER, WMOPT_STATE, WMOPT_TITLE, WMOPT_TRANSIENT,
      WMOPT_WITHDRAW };
    int index, length;
    char *argv1;
    TkWindow *winPtr;
    TkDisplay *dispPtr = ((TkWindow *) tkwin)->dispPtr;

    if (objc < 2) {
      wrongNumArgs:
      Tcl_WrongNumArgs(interp, 1, objv, "option window ?arg ...?");
      return TCL_ERROR;
    }

    argv1 = Tcl_GetStringFromObj(objv[1], &length);
    if ((argv1[0] == 't') && (strncmp(argv1, "tracing", length) == 0)
          && (length >= 3)) {
      int wmTracing;
      if ((objc != 2) && (objc != 3)) {
          Tcl_WrongNumArgs(interp, 2, objv, "?boolean?");
          return TCL_ERROR;
      }
      if (objc == 2) {
          Tcl_SetResult(interp,
                ((dispPtr->flags & TK_DISPLAY_WM_TRACING) ? "on" : "off"),
                TCL_STATIC);
          return TCL_OK;
      }
      if (Tcl_GetBooleanFromObj(interp, objv[2], &wmTracing) != TCL_OK) {
          return TCL_ERROR;
      }
      if (wmTracing) {
          dispPtr->flags |= TK_DISPLAY_WM_TRACING;
      } else {
          dispPtr->flags &= ~TK_DISPLAY_WM_TRACING;
      }
      return TCL_OK;
    }

    if (Tcl_GetIndexFromObj(interp, objv[1], optionStrings, "option", 0,
          &index) != TCL_OK) {
      return TCL_ERROR;
    }

    if (objc < 3) {
      goto wrongNumArgs;
    }

    if (TkGetWindowFromObj(interp, tkwin, objv[2], (Tk_Window *) &winPtr)
          != TCL_OK) {
      return TCL_ERROR;
    }
    if (!Tk_IsTopLevel(winPtr)) {
      Tcl_AppendResult(interp, "window \"", winPtr->pathName,
            "\" isn't a top-level window", (char *) NULL);
      return TCL_ERROR;
    }

    switch ((enum options) index) {
      case WMOPT_ASPECT:
      return WmAspectCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ATTRIBUTES:
      return WmAttributesCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_CLIENT:
      return WmClientCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_COLORMAPWINDOWS:
      return WmColormapwindowsCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_COMMAND:
      return WmCommandCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_DEICONIFY:
      return WmDeiconifyCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_FOCUSMODEL:
      return WmFocusmodelCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_FRAME:
      return WmFrameCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_GEOMETRY:
      return WmGeometryCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_GRID:
      return WmGridCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_GROUP:
      return WmGroupCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ICONBITMAP:
      return WmIconbitmapCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ICONIFY:
      return WmIconifyCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ICONMASK:
      return WmIconmaskCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ICONNAME:
      return WmIconnameCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ICONPOSITION:
      return WmIconpositionCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_ICONWINDOW:
      return WmIconwindowCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_MAXSIZE:
      return WmMaxsizeCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_MINSIZE:
      return WmMinsizeCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_OVERRIDEREDIRECT:
      return WmOverrideredirectCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_POSITIONFROM:
      return WmPositionfromCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_PROTOCOL:
      return WmProtocolCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_RESIZABLE:
      return WmResizableCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_SIZEFROM:
      return WmSizefromCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_STACKORDER:
      return WmStackorderCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_STATE:
      return WmStateCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_TITLE:
      return WmTitleCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_TRANSIENT:
      return WmTransientCmd(tkwin, winPtr, interp, objc, objv);
      case WMOPT_WITHDRAW:
      return WmWithdrawCmd(tkwin, winPtr, interp, objc, objv);
    }

    /* This should not happen */
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * WmAspectCmd --
 *
 *    This procedure is invoked to process the "wm aspect" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmAspectCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int numer1, denom1, numer2, denom2;

    if ((objc != 3) && (objc != 7)) {
      Tcl_WrongNumArgs(interp, 2, objv,
            "window ?minNumer minDenom maxNumer maxDenom?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->sizeHintsFlags & PAspect) {
          char buf[TCL_INTEGER_SPACE * 4];

          sprintf(buf, "%d %d %d %d", wmPtr->minAspect.x,
                wmPtr->minAspect.y, wmPtr->maxAspect.x,
                wmPtr->maxAspect.y);
          Tcl_SetResult(interp, buf, TCL_VOLATILE);
      }
      return TCL_OK;
    }
    if (*Tcl_GetString(objv[3]) == '\0') {
      wmPtr->sizeHintsFlags &= ~PAspect;
    } else {
      if ((Tcl_GetIntFromObj(interp, objv[3], &numer1) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[4], &denom1) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[5], &numer2) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[6], &denom2) != TCL_OK)) {
          return TCL_ERROR;
      }
      if ((numer1 <= 0) || (denom1 <= 0) || (numer2 <= 0) ||
            (denom2 <= 0)) {
          Tcl_SetResult(interp, "aspect number can't be <= 0",
                TCL_STATIC);
          return TCL_ERROR;
      }
      wmPtr->minAspect.x = numer1;
      wmPtr->minAspect.y = denom1;
      wmPtr->maxAspect.x = numer2;
      wmPtr->maxAspect.y = denom2;
      wmPtr->sizeHintsFlags |= PAspect;
    }
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmAttributesCmd --
 *
 *    This procedure is invoked to process the "wm attributes" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmAttributesCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    LONG style, exStyle, styleBit, *stylePtr;
    char buf[TCL_INTEGER_SPACE], *string;
    int i, boolean, length;

    if (objc < 3) {
        configArgs:
      Tcl_WrongNumArgs(interp, 2, objv,
            "window"
            " ?-disabled ?bool??"
            " ?-toolwindow ?bool??"
            " ?-topmost ?bool??");
      return TCL_ERROR;
    }
    exStyle = wmPtr->exStyleConfig;
    style   = wmPtr->styleConfig;
    if (objc == 3) {
      sprintf(buf, "%d", ((style & WS_DISABLED) != 0));
      Tcl_AppendResult(interp, "-disabled ", buf, (char *) NULL);
      sprintf(buf, "%d", ((exStyle & WS_EX_TOOLWINDOW) != 0));
      Tcl_AppendResult(interp, " -toolwindow ", buf, (char *) NULL);
      sprintf(buf, "%d", ((exStyle & WS_EX_TOPMOST) != 0));
      Tcl_AppendResult(interp, " -topmost ", buf, (char *) NULL);
      return TCL_OK;
    }
    for (i = 3; i < objc; i += 2) {
      string = Tcl_GetStringFromObj(objv[i], &length);
      if ((length < 2) || (string[0] != '-')) {
          goto configArgs;
      }
      if ((i < objc-1) &&
            (Tcl_GetBooleanFromObj(interp, objv[i+1], &boolean) != TCL_OK)) {
          return TCL_ERROR;
      }
      if (strncmp(string, "-disabled", length) == 0) {
          stylePtr = &style;
          styleBit = WS_DISABLED;
      } else if ((strncmp(string, "-toolwindow", length) == 0)
               && (length >= 3)) {
          stylePtr = &exStyle;
          styleBit = WS_EX_TOOLWINDOW;
      } else if ((strncmp(string, "-topmost", length) == 0)
               && (length >= 3)) {
          stylePtr = &exStyle;
          styleBit = WS_EX_TOPMOST;
          if ((i < objc-1) && (winPtr->flags & TK_EMBEDDED)) {
            Tcl_AppendResult(interp, "can't set topmost flag on ",
                  winPtr->pathName, ": it is an embedded window",
                  (char *) NULL);
            return TCL_ERROR;
          }
      } else {
          goto configArgs;
      }
      if (i == objc-1) {
          Tcl_SetIntObj(Tcl_GetObjResult(interp),
                ((*stylePtr & styleBit) != 0));
      } else if (boolean) {
          *stylePtr |= styleBit;
      } else {
          *stylePtr &= ~styleBit;
      }
    }
    if ((wmPtr->styleConfig != style) ||
          (wmPtr->exStyleConfig != exStyle)) {
      wmPtr->styleConfig = style;
      wmPtr->exStyleConfig = exStyle;
      UpdateWrapper(winPtr);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmClientCmd --
 *
 *    This procedure is invoked to process the "wm client" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmClientCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    char *argv3;
    int length;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?name?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->clientMachine != NULL) {
          Tcl_SetResult(interp, wmPtr->clientMachine, TCL_STATIC);
      }
      return TCL_OK;
    }
    argv3 = Tcl_GetStringFromObj(objv[3], &length);
    if (argv3[0] == 0) {
      if (wmPtr->clientMachine != NULL) {
          ckfree((char *) wmPtr->clientMachine);
          wmPtr->clientMachine = NULL;
          if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
            XDeleteProperty(winPtr->display, winPtr->window,
                  Tk_InternAtom((Tk_Window) winPtr,
                        "WM_CLIENT_MACHINE"));
          }
      }
      return TCL_OK;
    }
    if (wmPtr->clientMachine != NULL) {
      ckfree((char *) wmPtr->clientMachine);
    }
    wmPtr->clientMachine = (char *)
          ckalloc((unsigned) (length + 1));
    strcpy(wmPtr->clientMachine, argv3);
    if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
      XTextProperty textProp;
      if (XStringListToTextProperty(&wmPtr->clientMachine, 1, &textProp)
            != 0) {
          XSetWMClientMachine(winPtr->display, winPtr->window,
                &textProp);
          XFree((char *) textProp.value);
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmColormapwindowsCmd --
 *
 *    This procedure is invoked to process the "wm colormapwindows"
 *    Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmColormapwindowsCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    TkWindow **cmapList;
    TkWindow *winPtr2;
    int i, windowObjc, gotToplevel;
    Tcl_Obj **windowObjv;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?windowList?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      Tk_MakeWindowExist((Tk_Window) winPtr);
      for (i = 0; i < wmPtr->cmapCount; i++) {
          if ((i == (wmPtr->cmapCount-1))
                && (wmPtr->flags & WM_ADDED_TOPLEVEL_COLORMAP)) {
            break;
          }
          Tcl_AppendElement(interp, wmPtr->cmapList[i]->pathName);
      }
      return TCL_OK;
    }
    if (Tcl_ListObjGetElements(interp, objv[3], &windowObjc, &windowObjv)
          != TCL_OK) {
      return TCL_ERROR;
    }
    cmapList = (TkWindow **) ckalloc((unsigned)
          ((windowObjc+1)*sizeof(TkWindow*)));
    gotToplevel = 0;
    for (i = 0; i < windowObjc; i++) {
      if (TkGetWindowFromObj(interp, tkwin, windowObjv[i],
            (Tk_Window *) &winPtr2) != TCL_OK)
      {
          ckfree((char *) cmapList);
          return TCL_ERROR;
      }
      if (winPtr2 == winPtr) {
          gotToplevel = 1;
      }
      if (winPtr2->window == None) {
          Tk_MakeWindowExist((Tk_Window) winPtr2);
      }
      cmapList[i] = winPtr2;
    }
    if (!gotToplevel) {
      wmPtr->flags |= WM_ADDED_TOPLEVEL_COLORMAP;
      cmapList[windowObjc] = winPtr;
      windowObjc++;
    } else {
      wmPtr->flags &= ~WM_ADDED_TOPLEVEL_COLORMAP;
    }
    wmPtr->flags |= WM_COLORMAPS_EXPLICIT;
    if (wmPtr->cmapList != NULL) {
      ckfree((char *)wmPtr->cmapList);
    }
    wmPtr->cmapList = cmapList;
    wmPtr->cmapCount = windowObjc;

    /*
     * Now we need to force the updated colormaps to be installed.
     */

    if (wmPtr == winPtr->dispPtr->foregroundWmPtr) {
      InstallColormaps(wmPtr->wrapper, WM_QUERYNEWPALETTE, 1);
    } else {
      InstallColormaps(wmPtr->wrapper, WM_PALETTECHANGED, 0);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmCommandCmd --
 *
 *    This procedure is invoked to process the "wm command" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmCommandCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    char *argv3;
    int cmdArgc;
    CONST char **cmdArgv;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?value?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->cmdArgv != NULL) {
          Tcl_SetResult(interp,
                Tcl_Merge(wmPtr->cmdArgc, wmPtr->cmdArgv),
                TCL_DYNAMIC);
      }
      return TCL_OK;
    }
    argv3 = Tcl_GetString(objv[3]);
    if (argv3[0] == 0) {
      if (wmPtr->cmdArgv != NULL) {
          ckfree((char *) wmPtr->cmdArgv);
          wmPtr->cmdArgv = NULL;
          if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
            XDeleteProperty(winPtr->display, winPtr->window,
                  Tk_InternAtom((Tk_Window) winPtr, "WM_COMMAND"));
          }
      }
      return TCL_OK;
    }
    if (Tcl_SplitList(interp, argv3, &cmdArgc, &cmdArgv) != TCL_OK) {
      return TCL_ERROR;
    }
    if (wmPtr->cmdArgv != NULL) {
      ckfree((char *) wmPtr->cmdArgv);
    }
    wmPtr->cmdArgc = cmdArgc;
    wmPtr->cmdArgv = cmdArgv;
    if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
      XSetCommand(winPtr->display, winPtr->window, cmdArgv, cmdArgc);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmDeiconifyCmd --
 *
 *    This procedure is invoked to process the "wm deiconify" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmDeiconifyCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;

    if (objc != 3) {
      Tcl_WrongNumArgs(interp, 2, objv, "window");
      return TCL_ERROR;
    }
    if (wmPtr->iconFor != NULL) {
      Tcl_AppendResult(interp, "can't deiconify ", Tcl_GetString(objv[2]),
            ": it is an icon for ", Tk_PathName(wmPtr->iconFor),
            (char *) NULL);
      return TCL_ERROR;
    }
    if (winPtr->flags & TK_EMBEDDED) {
      Tcl_AppendResult(interp, "can't deiconify ", winPtr->pathName,
            ": it is an embedded window", (char *) NULL);
      return TCL_ERROR;
    }

    wmPtr->flags &= ~WM_WITHDRAWN;

    /*
     * If WM_UPDATE_PENDING is true, a pending UpdateGeometryInfo may
     * need to be called first to update a withdrawn toplevel's geometry
     * before it is deiconified by TkpWmSetState.
     * Don't bother if we've never been mapped.
     */
    if ((wmPtr->flags & WM_UPDATE_PENDING) &&
          !(wmPtr->flags & WM_NEVER_MAPPED)) {
      Tcl_CancelIdleCall(UpdateGeometryInfo, (ClientData) winPtr);
      UpdateGeometryInfo((ClientData) winPtr);
    }

    /*
     * If we were in the ZoomState (maximized), 'wm deiconify'
     * should not cause the window to shrink
     */
    if (wmPtr->hints.initial_state == ZoomState) {
      TkpWmSetState(winPtr, ZoomState);
    } else {
      TkpWmSetState(winPtr, NormalState);
    }

    /*
     * An unmapped window will be mapped at idle time
     * by a call to MapFrame. That calls CreateWrapper
     * which sets the focus and raises the window.
     */
    if (wmPtr->flags & WM_NEVER_MAPPED) {
      return TCL_OK;
    }

    /*
     * Follow Windows-like style here, raising the window to the top.
     */
    TkWmRestackToplevel(winPtr, Above, NULL);
    if (!(Tk_Attributes((Tk_Window) winPtr)->override_redirect)) {
      TkSetFocusWin(winPtr, 1);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmFocusmodelCmd --
 *
 *    This procedure is invoked to process the "wm focusmodel" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmFocusmodelCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    static CONST char *optionStrings[] = {
      "active", "passive", (char *) NULL };
    enum options {
      OPT_ACTIVE, OPT_PASSIVE };
    int index;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?active|passive?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      Tcl_SetResult(interp, (wmPtr->hints.input ? "passive" : "active"),
            TCL_STATIC);
      return TCL_OK;
    }

    if (Tcl_GetIndexFromObj(interp, objv[3], optionStrings, "argument", 0,
          &index) != TCL_OK) {
      return TCL_ERROR;
    }
    if (index == OPT_ACTIVE) {
      wmPtr->hints.input = False;
    } else { /* OPT_PASSIVE */
      wmPtr->hints.input = True;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmFrameCmd --
 *
 *    This procedure is invoked to process the "wm frame" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmFrameCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    HWND hwnd;
    char buf[TCL_INTEGER_SPACE];

    if (objc != 3) {
      Tcl_WrongNumArgs(interp, 2, objv, "window");
      return TCL_ERROR;
    }
    if (Tk_WindowId((Tk_Window) winPtr) == None) {
      Tk_MakeWindowExist((Tk_Window) winPtr);
    }
    hwnd = wmPtr->wrapper;
    if (hwnd == NULL) {
      hwnd = Tk_GetHWND(Tk_WindowId((Tk_Window) winPtr));
    }
    sprintf(buf, "0x%x", (unsigned int) hwnd);
    Tcl_SetResult(interp, buf, TCL_VOLATILE);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmGeometryCmd --
 *
 *    This procedure is invoked to process the "wm geometry" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmGeometryCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    char xSign, ySign;
    int width, height;
    char *argv3;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?newGeometry?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      char buf[16 + TCL_INTEGER_SPACE * 4];

      xSign = (wmPtr->flags & WM_NEGATIVE_X) ? '-' : '+';
      ySign = (wmPtr->flags & WM_NEGATIVE_Y) ? '-' : '+';
      if (wmPtr->gridWin != NULL) {
          width = wmPtr->reqGridWidth + (winPtr->changes.width
                - winPtr->reqWidth)/wmPtr->widthInc;
          height = wmPtr->reqGridHeight + (winPtr->changes.height
                - winPtr->reqHeight)/wmPtr->heightInc;
      } else {
          width = winPtr->changes.width;
          height = winPtr->changes.height;
      }
      sprintf(buf, "%dx%d%c%d%c%d", width, height, xSign, wmPtr->x,
            ySign, wmPtr->y);
      Tcl_SetResult(interp, buf, TCL_VOLATILE);
      return TCL_OK;
    }
    argv3 = Tcl_GetString(objv[3]);
    if (*argv3 == '\0') {
      wmPtr->width = -1;
      wmPtr->height = -1;
      WmUpdateGeom(wmPtr, winPtr);
      return TCL_OK;
    }
    return ParseGeometry(interp, argv3, winPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * WmGridCmd --
 *
 *    This procedure is invoked to process the "wm grid" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmGridCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int reqWidth, reqHeight, widthInc, heightInc;

    if ((objc != 3) && (objc != 7)) {
      Tcl_WrongNumArgs(interp, 2, objv,
            "window ?baseWidth baseHeight widthInc heightInc?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->sizeHintsFlags & PBaseSize) {
          char buf[TCL_INTEGER_SPACE * 4];

          sprintf(buf, "%d %d %d %d", wmPtr->reqGridWidth,
                wmPtr->reqGridHeight, wmPtr->widthInc,
                wmPtr->heightInc);
          Tcl_SetResult(interp, buf, TCL_VOLATILE);
      }
      return TCL_OK;
    }
    if (*Tcl_GetString(objv[3]) == '\0') {
      /*
       * Turn off gridding and reset the width and height
       * to make sense as ungridded numbers.
       */

      wmPtr->sizeHintsFlags &= ~(PBaseSize|PResizeInc);
      if (wmPtr->width != -1) {
          wmPtr->width = winPtr->reqWidth + (wmPtr->width
                - wmPtr->reqGridWidth)*wmPtr->widthInc;
          wmPtr->height = winPtr->reqHeight + (wmPtr->height
                - wmPtr->reqGridHeight)*wmPtr->heightInc;
      }
      wmPtr->widthInc = 1;
      wmPtr->heightInc = 1;
    } else {
      if ((Tcl_GetIntFromObj(interp, objv[3], &reqWidth) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[4], &reqHeight) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[5], &widthInc) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[6], &heightInc) != TCL_OK)) {
          return TCL_ERROR;
      }
      if (reqWidth < 0) {
          Tcl_SetResult(interp, "baseWidth can't be < 0", TCL_STATIC);
          return TCL_ERROR;
      }
      if (reqHeight < 0) {
          Tcl_SetResult(interp, "baseHeight can't be < 0", TCL_STATIC);
          return TCL_ERROR;
      }
      if (widthInc < 0) {
          Tcl_SetResult(interp, "widthInc can't be < 0", TCL_STATIC);
          return TCL_ERROR;
      }
      if (heightInc < 0) {
          Tcl_SetResult(interp, "heightInc can't be < 0", TCL_STATIC);
          return TCL_ERROR;
      }
      Tk_SetGrid((Tk_Window) winPtr, reqWidth, reqHeight, widthInc,
            heightInc);
    }
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmGroupCmd --
 *
 *    This procedure is invoked to process the "wm group" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmGroupCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    Tk_Window tkwin2;
    char *argv3;
    int length;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?pathName?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->hints.flags & WindowGroupHint) {
          Tcl_SetResult(interp, wmPtr->leaderName, TCL_STATIC);
      }
      return TCL_OK;
    }
    argv3 = Tcl_GetStringFromObj(objv[3], &length);
    if (*argv3 == '\0') {
      wmPtr->hints.flags &= ~WindowGroupHint;
      if (wmPtr->leaderName != NULL) {
          ckfree(wmPtr->leaderName);
      }
      wmPtr->leaderName = NULL;
    } else {
      if (TkGetWindowFromObj(interp, tkwin, objv[3], &tkwin2) != TCL_OK) {
          return TCL_ERROR;
      }
      Tk_MakeWindowExist(tkwin2);
      if (wmPtr->leaderName != NULL) {
          ckfree(wmPtr->leaderName);
      }
      wmPtr->hints.window_group = Tk_WindowId(tkwin2);
      wmPtr->hints.flags |= WindowGroupHint;
      wmPtr->leaderName = ckalloc((unsigned) (length + 1));
      strcpy(wmPtr->leaderName, argv3);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmIconbitmapCmd --
 *
 *    This procedure is invoked to process the "wm iconbitmap" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmIconbitmapCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    /* If true, then set for all windows. */
    int isDefault = 0;
    char *string;

    if ((objc < 3) || (objc > 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?-default? ?image?");
      return TCL_ERROR;
    } else if (objc == 5) {
      /* If we have 5 arguments, we must have a '-default' flag */
      char *argv3 = Tcl_GetString(objv[3]);
      if (strcmp(argv3, "-default")) {
          Tcl_AppendResult(interp, "illegal option \"",
                argv3, "\" must be \"-default\"",
                (char *) NULL);
          return TCL_ERROR;
      }
      isDefault = 1;
    } else if (objc == 3) {
      /* No arguments were given */
      if (wmPtr->hints.flags & IconPixmapHint) {
          Tcl_SetResult(interp, (char *)
                Tk_NameOfBitmap(winPtr->display, wmPtr->hints.icon_pixmap),
                TCL_STATIC);
      }
      return TCL_OK;
    }

    string = Tcl_GetString(objv[objc-1]);
    if (*string == '\0') {
      if (wmPtr->hints.icon_pixmap != None) {
          Tk_FreeBitmap(winPtr->display, wmPtr->hints.icon_pixmap);
          wmPtr->hints.icon_pixmap = None;
      }
      wmPtr->hints.flags &= ~IconPixmapHint;
      if (WinSetIcon(interp, NULL, 
                   (isDefault ? NULL : (Tk_Window) winPtr)) != TCL_OK) {
          return TCL_ERROR;
      }
    } else {
      /*
       * In the future this block of code will use Tk's 'image'
       * functionality to allow all supported image formats.
       * However, this will require a change to the way icons are
       * handled.  We will need to add icon<->image conversions
       * routines.
       *
       * Until that happens we simply try to find an icon in the
       * given argument, and if that fails, we use the older
       * bitmap code.  We do things this way round (icon then
       * bitmap), because the bitmap code actually seems to have
       * no visible effect, so we want to give the icon code the
       * first try at doing something.
       */

      /*
       * Either return NULL, or return a valid titlebaricon with its
       * ref count already incremented.
       */
      WinIconPtr titlebaricon = ReadIconFromFile(interp, objv[objc-1]);
      if (titlebaricon != NULL) {
          /*
           * Try to set the icon for the window.  If it is a '-default'
           * icon, we must pass in NULL
           */
          if (WinSetIcon(interp, titlebaricon,
                (isDefault ? NULL : (Tk_Window) winPtr)) != TCL_OK) {
            /* We didn't use the titlebaricon after all */
            DecrIconRefCount(titlebaricon);
            titlebaricon = NULL;
          }
      }
      if (titlebaricon == NULL) {
          /*
           * We didn't manage to handle the argument as a valid
           * icon.  Try as a bitmap.  First we must clear the
           * error message which was placed in the interpreter
           */
          Pixmap pixmap;
          Tcl_ResetResult(interp);
          pixmap = Tk_GetBitmap(interp, (Tk_Window) winPtr, string);
          if (pixmap == None) {
            return TCL_ERROR;
          }
          wmPtr->hints.icon_pixmap = pixmap;
          wmPtr->hints.flags |= IconPixmapHint;
          titlebaricon = GetIconFromPixmap(Tk_Display(winPtr), pixmap);
          if (titlebaricon != NULL) {
            if (WinSetIcon(interp, titlebaricon, 
                  (isDefault ? NULL : (Tk_Window) winPtr)) != TCL_OK) {
                /* We didn't use the titlebaricon after all */
                DecrIconRefCount(titlebaricon);
                titlebaricon = NULL;
            }
          }
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmIconifyCmd --
 *
 *    This procedure is invoked to process the "wm iconify" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmIconifyCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    if (objc != 3) {
      Tcl_WrongNumArgs(interp, 2, objv, "window");
      return TCL_ERROR;
    }
    if (Tk_Attributes((Tk_Window) winPtr)->override_redirect) {
      Tcl_AppendResult(interp, "can't iconify \"", winPtr->pathName,
            "\": override-redirect flag is set", (char *) NULL);
      return TCL_ERROR;
    }
    if (wmPtr->masterPtr != NULL) {
      Tcl_AppendResult(interp, "can't iconify \"", winPtr->pathName,
            "\": it is a transient", (char *) NULL);
      return TCL_ERROR;
    }
    if (wmPtr->iconFor != NULL) {
      Tcl_AppendResult(interp, "can't iconify ", winPtr->pathName,
            ": it is an icon for ", Tk_PathName(wmPtr->iconFor),
            (char *) NULL);
      return TCL_ERROR;
    }
    if (winPtr->flags & TK_EMBEDDED) {
      Tcl_AppendResult(interp, "can't iconify ", winPtr->pathName,
            ": it is an embedded window", (char *) NULL);
      return TCL_ERROR;
    }
    TkpWmSetState(winPtr, IconicState);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmIconmaskCmd --
 *
 *    This procedure is invoked to process the "wm iconmask" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmIconmaskCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    Pixmap pixmap;
    char *argv3;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?bitmap?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->hints.flags & IconMaskHint) {
          Tcl_SetResult(interp, (char *)
                Tk_NameOfBitmap(winPtr->display, wmPtr->hints.icon_mask),
                TCL_STATIC);
      }
      return TCL_OK;
    }
    argv3 = Tcl_GetString(objv[3]);
    if (*argv3 == '\0') {
      if (wmPtr->hints.icon_mask != None) {
          Tk_FreeBitmap(winPtr->display, wmPtr->hints.icon_mask);
      }
      wmPtr->hints.flags &= ~IconMaskHint;
    } else {
      pixmap = Tk_GetBitmap(interp, tkwin, argv3);
      if (pixmap == None) {
          return TCL_ERROR;
      }
      wmPtr->hints.icon_mask = pixmap;
      wmPtr->hints.flags |= IconMaskHint;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmIconnameCmd --
 *
 *    This procedure is invoked to process the "wm iconname" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmIconnameCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    char *argv3;
    int length;

    if (objc > 4) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?newName?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      Tcl_SetResult(interp,
            ((wmPtr->iconName != NULL) ? wmPtr->iconName : ""),
            TCL_STATIC);
      return TCL_OK;
    } else {
      if (wmPtr->iconName != NULL) {
          ckfree((char *) wmPtr->iconName);
      }
      argv3 = Tcl_GetStringFromObj(objv[3], &length);
      wmPtr->iconName = ckalloc((unsigned) (length + 1));
      strcpy(wmPtr->iconName, argv3);
      if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
          XSetIconName(winPtr->display, winPtr->window, wmPtr->iconName);
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmIconpositionCmd --
 *
 *    This procedure is invoked to process the "wm iconposition"
 *    Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmIconpositionCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int x, y;

    if ((objc != 3) && (objc != 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?x y?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->hints.flags & IconPositionHint) {
          char buf[TCL_INTEGER_SPACE * 2];

          sprintf(buf, "%d %d", wmPtr->hints.icon_x,
                wmPtr->hints.icon_y);
          Tcl_SetResult(interp, buf, TCL_VOLATILE);
      }
      return TCL_OK;
    }
    if (*Tcl_GetString(objv[3]) == '\0') {
      wmPtr->hints.flags &= ~IconPositionHint;
    } else {
      if ((Tcl_GetIntFromObj(interp, objv[3], &x) != TCL_OK)
            || (Tcl_GetIntFromObj(interp, objv[4], &y) != TCL_OK)){
          return TCL_ERROR;
      }
      wmPtr->hints.icon_x = x;
      wmPtr->hints.icon_y = y;
      wmPtr->hints.flags |= IconPositionHint;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmIconwindowCmd --
 *
 *    This procedure is invoked to process the "wm iconwindow" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmIconwindowCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    Tk_Window tkwin2;
    WmInfo *wmPtr2;
    XSetWindowAttributes atts;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?pathName?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->icon != NULL) {
          Tcl_SetResult(interp, Tk_PathName(wmPtr->icon), TCL_STATIC);
      }
      return TCL_OK;
    }
    if (*Tcl_GetString(objv[3]) == '\0') {
      wmPtr->hints.flags &= ~IconWindowHint;
      if (wmPtr->icon != NULL) {
          /*
           * Let the window use button events again, then remove
           * it as icon window.
           */

          atts.event_mask = Tk_Attributes(wmPtr->icon)->event_mask
                | ButtonPressMask;
          Tk_ChangeWindowAttributes(wmPtr->icon, CWEventMask, &atts);
          wmPtr2 = ((TkWindow *) wmPtr->icon)->wmInfoPtr;
          wmPtr2->iconFor = NULL;
          wmPtr2->hints.initial_state = WithdrawnState;
      }
      wmPtr->icon = NULL;
    } else {
      if (TkGetWindowFromObj(interp, tkwin, objv[3], &tkwin2) != TCL_OK) {
          return TCL_ERROR;
      }
      if (!Tk_IsTopLevel(tkwin2)) {
          Tcl_AppendResult(interp, "can't use ", Tcl_GetString(objv[3]),
                " as icon window: not at top level", (char *) NULL);
          return TCL_ERROR;
      }
      wmPtr2 = ((TkWindow *) tkwin2)->wmInfoPtr;
      if (wmPtr2->iconFor != NULL) {
          Tcl_AppendResult(interp, Tcl_GetString(objv[3]),
                " is already an icon for ",
                Tk_PathName(wmPtr2->iconFor), (char *) NULL);
          return TCL_ERROR;
      }
      if (wmPtr->icon != NULL) {
          WmInfo *wmPtr3 = ((TkWindow *) wmPtr->icon)->wmInfoPtr;
          wmPtr3->iconFor = NULL;

          /*
           * Let the window use button events again.
           */

          atts.event_mask = Tk_Attributes(wmPtr->icon)->event_mask
                | ButtonPressMask;
          Tk_ChangeWindowAttributes(wmPtr->icon, CWEventMask, &atts);
      }

      /*
       * Disable button events in the icon window:  some window
       * managers (like olvwm) want to get the events themselves,
       * but X only allows one application at a time to receive
       * button events for a window.
       */

      atts.event_mask = Tk_Attributes(tkwin2)->event_mask
            & ~ButtonPressMask;
      Tk_ChangeWindowAttributes(tkwin2, CWEventMask, &atts);
      Tk_MakeWindowExist(tkwin2);
      wmPtr->hints.icon_window = Tk_WindowId(tkwin2);
      wmPtr->hints.flags |= IconWindowHint;
      wmPtr->icon = tkwin2;
      wmPtr2->iconFor = (Tk_Window) winPtr;
      if (!(wmPtr2->flags & WM_NEVER_MAPPED)) {
          if (XWithdrawWindow(Tk_Display(tkwin2), Tk_WindowId(tkwin2),
                Tk_ScreenNumber(tkwin2)) == 0) {
            Tcl_SetResult(interp,
                  "couldn't send withdraw message to window manager",
                  TCL_STATIC);
            return TCL_ERROR;
          }
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmMaxsizeCmd --
 *
 *    This procedure is invoked to process the "wm maxsize" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmMaxsizeCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int width, height;

    if ((objc != 3) && (objc != 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?width height?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      char buf[TCL_INTEGER_SPACE * 2];

      GetMaxSize(wmPtr, &width, &height);
      sprintf(buf, "%d %d", width, height);
      Tcl_SetResult(interp, buf, TCL_VOLATILE);
      return TCL_OK;
    }
    if ((Tcl_GetIntFromObj(interp, objv[3], &width) != TCL_OK)
          || (Tcl_GetIntFromObj(interp, objv[4], &height) != TCL_OK)) {
      return TCL_ERROR;
    }
    wmPtr->maxWidth = width;
    wmPtr->maxHeight = height;
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmMinsizeCmd --
 *
 *    This procedure is invoked to process the "wm minsize" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmMinsizeCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int width, height;

    if ((objc != 3) && (objc != 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?width height?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      char buf[TCL_INTEGER_SPACE * 2];

      GetMinSize(wmPtr, &width, &height);
      sprintf(buf, "%d %d", width, height);
      Tcl_SetResult(interp, buf, TCL_VOLATILE);
      return TCL_OK;
    }
    if ((Tcl_GetIntFromObj(interp, objv[3], &width) != TCL_OK)
          || (Tcl_GetIntFromObj(interp, objv[4], &height) != TCL_OK)) {
      return TCL_ERROR;
    }
    wmPtr->minWidth = width;
    wmPtr->minHeight = height;
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmOverrideredirectCmd --
 *
 *    This procedure is invoked to process the "wm overrideredirect"
 *    Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmOverrideredirectCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int boolean, curValue;
    XSetWindowAttributes atts;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?boolean?");
      return TCL_ERROR;
    }
    curValue = Tk_Attributes((Tk_Window) winPtr)->override_redirect;
    if (objc == 3) {
      Tcl_SetBooleanObj(Tcl_GetObjResult(interp), curValue);
      return TCL_OK;
    }
    if (Tcl_GetBooleanFromObj(interp, objv[3], &boolean) != TCL_OK) {
      return TCL_ERROR;
    }
    if (curValue != boolean) {
      /*
       * Only do this if we are really changing value, because it
       * causes some funky stuff to occur
       */
      atts.override_redirect = (boolean) ? True : False;
      Tk_ChangeWindowAttributes((Tk_Window) winPtr, CWOverrideRedirect,
            &atts);
      if (!(wmPtr->flags & (WM_NEVER_MAPPED)
            && !(winPtr->flags & TK_EMBEDDED))) {
          UpdateWrapper(winPtr);
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmPositionfromCmd --
 *
 *    This procedure is invoked to process the "wm positionfrom"
 *    Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmPositionfromCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    static CONST char *optionStrings[] = {
      "program", "user", (char *) NULL };
    enum options {
      OPT_PROGRAM, OPT_USER };
    int index;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?user/program?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->sizeHintsFlags & USPosition) {
          Tcl_SetResult(interp, "user", TCL_STATIC);
      } else if (wmPtr->sizeHintsFlags & PPosition) {
          Tcl_SetResult(interp, "program", TCL_STATIC);
      }
      return TCL_OK;
    }
    if (*Tcl_GetString(objv[3]) == '\0') {
      wmPtr->sizeHintsFlags &= ~(USPosition|PPosition);
    } else {
      if (Tcl_GetIndexFromObj(interp, objv[3], optionStrings, "argument", 0,
            &index) != TCL_OK) {
          return TCL_ERROR;
      }
      if (index == OPT_USER) {
          wmPtr->sizeHintsFlags &= ~PPosition;
          wmPtr->sizeHintsFlags |= USPosition;
      } else {
          wmPtr->sizeHintsFlags &= ~USPosition;
          wmPtr->sizeHintsFlags |= PPosition;
      }
    }
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmProtocolCmd --
 *
 *    This procedure is invoked to process the "wm protocol" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmProtocolCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    register ProtocolHandler *protPtr, *prevPtr;
    Atom protocol;
    char *cmd;
    int cmdLength;

    if ((objc < 3) || (objc > 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?name? ?command?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      /*
       * Return a list of all defined protocols for the window.
       */
      for (protPtr = wmPtr->protPtr; protPtr != NULL;
           protPtr = protPtr->nextPtr) {
          Tcl_AppendElement(interp,
                Tk_GetAtomName((Tk_Window) winPtr, protPtr->protocol));
      }
      return TCL_OK;
    }
    protocol = Tk_InternAtom((Tk_Window) winPtr, Tcl_GetString(objv[3]));
    if (objc == 4) {
      /*
       * Return the command to handle a given protocol.
       */
      for (protPtr = wmPtr->protPtr; protPtr != NULL;
           protPtr = protPtr->nextPtr) {
          if (protPtr->protocol == protocol) {
            Tcl_SetResult(interp, protPtr->command, TCL_STATIC);
            return TCL_OK;
          }
      }
      return TCL_OK;
    }

    /*
     * Delete any current protocol handler, then create a new
     * one with the specified command, unless the command is
     * empty.
     */

    for (protPtr = wmPtr->protPtr, prevPtr = NULL; protPtr != NULL;
       prevPtr = protPtr, protPtr = protPtr->nextPtr) {
      if (protPtr->protocol == protocol) {
          if (prevPtr == NULL) {
            wmPtr->protPtr = protPtr->nextPtr;
          } else {
            prevPtr->nextPtr = protPtr->nextPtr;
          }
          Tcl_EventuallyFree((ClientData) protPtr, TCL_DYNAMIC);
          break;
      }
    }
    cmd = Tcl_GetStringFromObj(objv[4], &cmdLength);
    if (cmdLength > 0) {
      protPtr = (ProtocolHandler *) ckalloc(HANDLER_SIZE(cmdLength));
      protPtr->protocol = protocol;
      protPtr->nextPtr = wmPtr->protPtr;
      wmPtr->protPtr = protPtr;
      protPtr->interp = interp;
      strcpy(protPtr->command, cmd);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmResizableCmd --
 *
 *    This procedure is invoked to process the "wm resizable" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmResizableCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int width, height;

    if ((objc != 3) && (objc != 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?width height?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      char buf[TCL_INTEGER_SPACE * 2];

      sprintf(buf, "%d %d",
            (wmPtr->flags  & WM_WIDTH_NOT_RESIZABLE) ? 0 : 1,
            (wmPtr->flags  & WM_HEIGHT_NOT_RESIZABLE) ? 0 : 1);
      Tcl_SetResult(interp, buf, TCL_VOLATILE);
      return TCL_OK;
    }
    if ((Tcl_GetBooleanFromObj(interp, objv[3], &width) != TCL_OK)
          || (Tcl_GetBooleanFromObj(interp, objv[4], &height) != TCL_OK)) {
      return TCL_ERROR;
    }
    if (width) {
      wmPtr->flags &= ~WM_WIDTH_NOT_RESIZABLE;
    } else {
      wmPtr->flags |= WM_WIDTH_NOT_RESIZABLE;
    }
    if (height) {
      wmPtr->flags &= ~WM_HEIGHT_NOT_RESIZABLE;
    } else {
      wmPtr->flags |= WM_HEIGHT_NOT_RESIZABLE;
    }
    if (!((wmPtr->flags & WM_NEVER_MAPPED)
          && !(winPtr->flags & TK_EMBEDDED))) {
      UpdateWrapper(winPtr);
    }
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmSizefromCmd --
 *
 *    This procedure is invoked to process the "wm sizefrom" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmSizefromCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    static CONST char *optionStrings[] = {
      "program", "user", (char *) NULL };
    enum options {
      OPT_PROGRAM, OPT_USER };
    int index;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?user|program?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (wmPtr->sizeHintsFlags & USSize) {
          Tcl_SetResult(interp, "user", TCL_STATIC);
      } else if (wmPtr->sizeHintsFlags & PSize) {
          Tcl_SetResult(interp, "program", TCL_STATIC);
      }
      return TCL_OK;
    }

    if (*Tcl_GetString(objv[3]) == '\0') {
      wmPtr->sizeHintsFlags &= ~(USSize|PSize);
    } else {
      if (Tcl_GetIndexFromObj(interp, objv[3], optionStrings, "argument", 0,
            &index) != TCL_OK) {
          return TCL_ERROR;
      }
      if (index == OPT_USER) {
          wmPtr->sizeHintsFlags &= ~PSize;
          wmPtr->sizeHintsFlags |= USSize;
      } else { /* OPT_PROGRAM */
          wmPtr->sizeHintsFlags &= ~USSize;
          wmPtr->sizeHintsFlags |= PSize;
      }
    }
    WmUpdateGeom(wmPtr, winPtr);
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmStackorderCmd --
 *
 *    This procedure is invoked to process the "wm stackorder" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmStackorderCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    TkWindow **windows, **window_ptr;
    static CONST char *optionStrings[] = {
      "isabove", "isbelow", (char *) NULL };
    enum options {
      OPT_ISABOVE, OPT_ISBELOW };
    int index;

    if ((objc != 3) && (objc != 5)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?isabove|isbelow window?");
      return TCL_ERROR;
    }

    if (objc == 3) {
      windows = TkWmStackorderToplevel(winPtr);
      if (windows == NULL) {
          panic("TkWmStackorderToplevel failed");
      } else {
          for (window_ptr = windows; *window_ptr ; window_ptr++) {
            Tcl_AppendElement(interp, (*window_ptr)->pathName);
          }
          ckfree((char *) windows);
          return TCL_OK;
      }
    } else {
      TkWindow *winPtr2;
      int index1=-1, index2=-1, result;

      if (TkGetWindowFromObj(interp, tkwin, objv[4], (Tk_Window *) &winPtr2)
            != TCL_OK) {
          return TCL_ERROR;
      }

      if (!Tk_IsTopLevel(winPtr2)) {
          Tcl_AppendResult(interp, "window \"", winPtr2->pathName,
                "\" isn't a top-level window", (char *) NULL);
          return TCL_ERROR;
      }

      if (!Tk_IsMapped(winPtr)) {
          Tcl_AppendResult(interp, "window \"", winPtr->pathName,
                "\" isn't mapped", (char *) NULL);
          return TCL_ERROR;
      }

      if (!Tk_IsMapped(winPtr2)) {
          Tcl_AppendResult(interp, "window \"", winPtr2->pathName,
                "\" isn't mapped", (char *) NULL);
          return TCL_ERROR;
      }

      /*
       * Lookup stacking order of all toplevels that are children
       * of "." and find the position of winPtr and winPtr2
       * in the stacking order.
       */

      windows = TkWmStackorderToplevel(winPtr->mainPtr->winPtr);

      if (windows == NULL) {
          Tcl_AppendResult(interp, "TkWmStackorderToplevel failed",
                    (char *) NULL);
          return TCL_ERROR;
      } else {
          for (window_ptr = windows; *window_ptr ; window_ptr++) {
            if (*window_ptr == winPtr)
                index1 = (window_ptr - windows);
            if (*window_ptr == winPtr2)
                index2 = (window_ptr - windows);
          }
          if (index1 == -1)
            panic("winPtr window not found");
          if (index2 == -1)
            panic("winPtr2 window not found");

          ckfree((char *) windows);
      }

      if (Tcl_GetIndexFromObj(interp, objv[3], optionStrings, "argument", 0,
            &index) != TCL_OK) {
          return TCL_ERROR;
      }
      if (index == OPT_ISABOVE) {
          result = index1 > index2;
      } else { /* OPT_ISBELOW */
          result = index1 < index2;
      }
      Tcl_SetIntObj(Tcl_GetObjResult(interp), result);
      return TCL_OK;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmStateCmd --
 *
 *    This procedure is invoked to process the "wm state" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmStateCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    static CONST char *optionStrings[] = {
      "normal", "iconic", "withdrawn", "zoomed", (char *) NULL };
    enum options {
      OPT_NORMAL, OPT_ICONIC, OPT_WITHDRAWN, OPT_ZOOMED };
    int index;

    if ((objc < 3) || (objc > 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?state?");
      return TCL_ERROR;
    }
    if (objc == 4) {
      if (wmPtr->iconFor != NULL) {
          Tcl_AppendResult(interp, "can't change state of ",
                Tcl_GetString(objv[2]),
                ": it is an icon for ", Tk_PathName(wmPtr->iconFor),
                (char *) NULL);
          return TCL_ERROR;
      }
      if (winPtr->flags & TK_EMBEDDED) {
          Tcl_AppendResult(interp, "can't change state of ",
                winPtr->pathName, ": it is an embedded window",
                (char *) NULL);
          return TCL_ERROR;
      }

      if (Tcl_GetIndexFromObj(interp, objv[3], optionStrings, "argument", 0,
            &index) != TCL_OK) {
          return TCL_ERROR;
      }

      if (index == OPT_NORMAL) {
          wmPtr->flags &= ~WM_WITHDRAWN;
          TkpWmSetState(winPtr, NormalState);
          /*
           * This varies from 'wm deiconify' because it does not
           * force the window to be raised and receive focus
           */
      } else if (index == OPT_ICONIC) {
          if (Tk_Attributes((Tk_Window) winPtr)->override_redirect) {
            Tcl_AppendResult(interp, "can't iconify \"",
                  winPtr->pathName,
                  "\": override-redirect flag is set",
                  (char *) NULL);
            return TCL_ERROR;
          }
          if (wmPtr->masterPtr != NULL) {
            Tcl_AppendResult(interp, "can't iconify \"",
                  winPtr->pathName,
                  "\": it is a transient", (char *) NULL);
            return TCL_ERROR;
          }
          TkpWmSetState(winPtr, IconicState);
      } else if (index == OPT_WITHDRAWN) {
          wmPtr->flags |= WM_WITHDRAWN;
          TkpWmSetState(winPtr, WithdrawnState);
      } else { /* OPT_ZOOMED */
          TkpWmSetState(winPtr, ZoomState);
      }
    } else {
      if (wmPtr->iconFor != NULL) {
          Tcl_SetResult(interp, "icon", TCL_STATIC);
      } else {
          switch (wmPtr->hints.initial_state) {
            case NormalState:
            Tcl_SetResult(interp, "normal", TCL_STATIC);
            break;
            case IconicState:
            Tcl_SetResult(interp, "iconic", TCL_STATIC);
            break;
            case WithdrawnState:
            Tcl_SetResult(interp, "withdrawn", TCL_STATIC);
            break;
            case ZoomState:
            Tcl_SetResult(interp, "zoomed", TCL_STATIC);
            break;
          }
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmTitleCmd --
 *
 *    This procedure is invoked to process the "wm title" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmTitleCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    char *argv3;
    int length;

    if (objc > 4) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?newTitle?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      Tcl_SetResult(interp, (char *)
            ((wmPtr->title != NULL) ? wmPtr->title : winPtr->nameUid),
            TCL_STATIC);
      return TCL_OK;
    } else {
      if (wmPtr->title != NULL) {
          ckfree((char *) wmPtr->title);
      }
      argv3 = Tcl_GetStringFromObj(objv[3], &length);
      wmPtr->title = ckalloc((unsigned) (length + 1));
      strcpy(wmPtr->title, argv3);

      if (!(wmPtr->flags & WM_NEVER_MAPPED) && wmPtr->wrapper != NULL) {
          Tcl_DString titleString;
          Tcl_WinUtfToTChar(wmPtr->title, -1, &titleString);
          (*tkWinProcs->setWindowText)(wmPtr->wrapper,
                (LPCTSTR) Tcl_DStringValue(&titleString));
          Tcl_DStringFree(&titleString);
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmTransientCmd --
 *
 *    This procedure is invoked to process the "wm transient" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmTransientCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    TkWindow *masterPtr = wmPtr->masterPtr;
    WmInfo *wmPtr2;

    if ((objc != 3) && (objc != 4)) {
      Tcl_WrongNumArgs(interp, 2, objv, "window ?master?");
      return TCL_ERROR;
    }
    if (objc == 3) {
      if (masterPtr != NULL) {
          Tcl_SetResult(interp, Tk_PathName(masterPtr), TCL_STATIC);
      }
      return TCL_OK;
    }
    if (Tcl_GetString(objv[3])[0] == '\0') {
      if (masterPtr != NULL) {
          /*
           * If we had a master, tell them that we aren't tied
           * to them anymore
           */

          masterPtr->wmInfoPtr->numTransients--;
          Tk_DeleteEventHandler((Tk_Window) masterPtr,
                VisibilityChangeMask|StructureNotifyMask,
                WmWaitVisibilityOrMapProc, (ClientData) winPtr);
      }

      wmPtr->masterPtr = NULL;
    } else {
      if (TkGetWindowFromObj(interp, tkwin, objv[3],
            (Tk_Window *) &masterPtr) != TCL_OK) {
          return TCL_ERROR;
      }
      while (!Tk_TopWinHierarchy(masterPtr)) {
          /*
           * Ensure that the master window is actually a Tk toplevel.
           */

          masterPtr = masterPtr->parentPtr;
      }
      Tk_MakeWindowExist((Tk_Window) masterPtr);

      if (wmPtr->iconFor != NULL) {
          Tcl_AppendResult(interp, "can't make \"",
                Tcl_GetString(objv[2]),
                "\" a transient: it is an icon for ",
                Tk_PathName(wmPtr->iconFor),
                (char *) NULL);
          return TCL_ERROR;
      }

      wmPtr2 = masterPtr->wmInfoPtr;

      if (wmPtr2->iconFor != NULL) {
          Tcl_AppendResult(interp, "can't make \"",
                Tcl_GetString(objv[3]),
                "\" a master: it is an icon for ",
                Tk_PathName(wmPtr2->iconFor),
                (char *) NULL);
          return TCL_ERROR;
      }

      if (masterPtr == winPtr) {
          Tcl_AppendResult(interp, "can't make \"", Tk_PathName(winPtr),
                "\" its own master",
                (char *) NULL);
          return TCL_ERROR;
      } else if (masterPtr != wmPtr->masterPtr) {
          /*
           * Remove old master map/unmap binding before setting
           * the new master. The event handler will ensure that
           * transient states reflect the state of the master.
           */

          if (wmPtr->masterPtr != NULL) {
            wmPtr->masterPtr->wmInfoPtr->numTransients--;
            Tk_DeleteEventHandler((Tk_Window) wmPtr->masterPtr,
                  VisibilityChangeMask|StructureNotifyMask,
                  WmWaitVisibilityOrMapProc, (ClientData) winPtr);
          }

          masterPtr->wmInfoPtr->numTransients++;
          Tk_CreateEventHandler((Tk_Window) masterPtr,
                VisibilityChangeMask|StructureNotifyMask,
                WmWaitVisibilityOrMapProc, (ClientData) winPtr);

          wmPtr->masterPtr = masterPtr;
      }
    }
    if (!((wmPtr->flags & WM_NEVER_MAPPED)
          && !(winPtr->flags & TK_EMBEDDED))) {
      if (wmPtr->masterPtr != NULL &&
            !Tk_IsMapped(wmPtr->masterPtr)) {
          TkpWmSetState(winPtr, WithdrawnState);
      } else {
          UpdateWrapper(winPtr);
      }
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * WmWithdrawCmd --
 *
 *    This procedure is invoked to process the "wm withdraw" Tcl command.
 *    See the user documentation for details on what it does.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    See the user documentation.
 *
 *----------------------------------------------------------------------
 */

static int
WmWithdrawCmd(tkwin, winPtr, interp, objc, objv)
    Tk_Window tkwin;          /* Main window of the application. */
    TkWindow *winPtr;           /* Toplevel to work with */
    Tcl_Interp *interp;       /* Current interpreter. */
    int objc;                 /* Number of arguments. */
    Tcl_Obj *CONST objv[];    /* Argument objects. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;

    if (objc != 3) {
      Tcl_WrongNumArgs(interp, 2, objv, "window");
      return TCL_ERROR;
    }
    if (wmPtr->iconFor != NULL) {
      Tcl_AppendResult(interp, "can't withdraw ", Tcl_GetString(objv[2]),
            ": it is an icon for ", Tk_PathName(wmPtr->iconFor),
            (char *) NULL);
      return TCL_ERROR;
    }
    wmPtr->flags |= WM_WITHDRAWN;
    TkpWmSetState(winPtr, WithdrawnState);
    return TCL_OK;
}

/*
 * Invoked by those wm subcommands that affect geometry.
 * Schedules a geometry update.
 */
static void
WmUpdateGeom(wmPtr, winPtr)
    WmInfo *wmPtr;
    TkWindow *winPtr;
{
    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
      wmPtr->flags |= WM_UPDATE_PENDING;
    }
}

      /*ARGSUSED*/
static void
WmWaitVisibilityOrMapProc(clientData, eventPtr)
    ClientData clientData;    /* Pointer to window. */
    XEvent *eventPtr;         /* Information about event. */
{
    TkWindow *winPtr = (TkWindow *) clientData;
    TkWindow *masterPtr = winPtr->wmInfoPtr->masterPtr;

    if (masterPtr == NULL)
      return;

    if (eventPtr->type == MapNotify) {
      if (!(winPtr->wmInfoPtr->flags & WM_WITHDRAWN))
          TkpWmSetState(winPtr, NormalState);
    } else if (eventPtr->type == UnmapNotify) {
      TkpWmSetState(winPtr, WithdrawnState);
    }

    if (eventPtr->type == VisibilityNotify) {
      int state = masterPtr->wmInfoPtr->hints.initial_state;

      if ((state == NormalState) || (state == ZoomState)) {
          state = winPtr->wmInfoPtr->hints.initial_state;
          if ((state == NormalState) || (state == ZoomState)) {
            UpdateWrapper(winPtr);
          }
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_SetGrid --
 *
 *    This procedure is invoked by a widget when it wishes to set a grid
 *    coordinate system that controls the size of a top-level window.
 *    It provides a C interface equivalent to the "wm grid" command and
 *    is usually asscoiated with the -setgrid option.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Grid-related information will be passed to the window manager, so
 *    that the top-level window associated with tkwin will resize on
 *    even grid units.  If some other window already controls gridding
 *    for the top-level window then this procedure call has no effect.
 *
 *----------------------------------------------------------------------
 */

void
Tk_SetGrid(tkwin, reqWidth, reqHeight, widthInc, heightInc)
    Tk_Window tkwin;          /* Token for window.  New window mgr info
                         * will be posted for the top-level window
                         * associated with this window. */
    int reqWidth;       /* Width (in grid units) corresponding to
                         * the requested geometry for tkwin. */
    int reqHeight;            /* Height (in grid units) corresponding to
                         * the requested geometry for tkwin. */
    int widthInc, heightInc;  /* Pixel increments corresponding to a
                         * change of one grid unit. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    register WmInfo *wmPtr;

    /*
     * Find the top-level window for tkwin, plus the window manager
     * information.
     */

    while (!(winPtr->flags & TK_TOP_HIERARCHY)) {
      winPtr = winPtr->parentPtr;
    }
    wmPtr = winPtr->wmInfoPtr;
    if (wmPtr == NULL) {
      return;
    }

    if ((wmPtr->gridWin != NULL) && (wmPtr->gridWin != tkwin)) {
      return;
    }

    if ((wmPtr->reqGridWidth == reqWidth)
          && (wmPtr->reqGridHeight == reqHeight)
          && (wmPtr->widthInc == widthInc)
          && (wmPtr->heightInc == heightInc)
          && ((wmPtr->sizeHintsFlags & (PBaseSize|PResizeInc))
                == (PBaseSize|PResizeInc))) {
      return;
    }

    /*
     * If gridding was previously off, then forget about any window
     * size requests made by the user or via "wm geometry":  these are
     * in pixel units and there's no easy way to translate them to
     * grid units since the new requested size of the top-level window in
     * pixels may not yet have been registered yet (it may filter up
     * the hierarchy in DoWhenIdle handlers).  However, if the window
     * has never been mapped yet then just leave the window size alone:
     * assume that it is intended to be in grid units but just happened
     * to have been specified before this procedure was called.
     */

    if ((wmPtr->gridWin == NULL) && !(wmPtr->flags & WM_NEVER_MAPPED)) {
      wmPtr->width = -1;
      wmPtr->height = -1;
    }

    /*
     * Set the new gridding information, and start the process of passing
     * all of this information to the window manager.
     */

    wmPtr->gridWin = tkwin;
    wmPtr->reqGridWidth = reqWidth;
    wmPtr->reqGridHeight = reqHeight;
    wmPtr->widthInc = widthInc;
    wmPtr->heightInc = heightInc;
    wmPtr->sizeHintsFlags |= PBaseSize|PResizeInc;
    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
      wmPtr->flags |= WM_UPDATE_PENDING;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_UnsetGrid --
 *
 *    This procedure cancels the effect of a previous call
 *    to Tk_SetGrid.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    If tkwin currently controls gridding for its top-level window,
 *    gridding is cancelled for that top-level window;  if some other
 *    window controls gridding then this procedure has no effect.
 *
 *----------------------------------------------------------------------
 */

void
Tk_UnsetGrid(tkwin)
    Tk_Window tkwin;          /* Token for window that is currently
                         * controlling gridding. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    register WmInfo *wmPtr;

    /*
     * Find the top-level window for tkwin, plus the window manager
     * information.
     */

    while (!(winPtr->flags & TK_TOP_HIERARCHY)) {
      winPtr = winPtr->parentPtr;
    }
    wmPtr = winPtr->wmInfoPtr;
    if (wmPtr == NULL) {
      return;
    }

    if (tkwin != wmPtr->gridWin) {
      return;
    }

    wmPtr->gridWin = NULL;
    wmPtr->sizeHintsFlags &= ~(PBaseSize|PResizeInc);
    if (wmPtr->width != -1) {
      wmPtr->width = winPtr->reqWidth + (wmPtr->width
            - wmPtr->reqGridWidth)*wmPtr->widthInc;
      wmPtr->height = winPtr->reqHeight + (wmPtr->height
            - wmPtr->reqGridHeight)*wmPtr->heightInc;
    }
    wmPtr->widthInc = 1;
    wmPtr->heightInc = 1;

    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
      wmPtr->flags |= WM_UPDATE_PENDING;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TopLevelEventProc --
 *
 *    This procedure is invoked when a top-level (or other externally-
 *    managed window) is restructured in any way.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Tk's internal data structures for the window get modified to
 *    reflect the structural change.
 *
 *----------------------------------------------------------------------
 */

static void
TopLevelEventProc(clientData, eventPtr)
    ClientData clientData;          /* Window for which event occurred. */
    XEvent *eventPtr;               /* Event that just happened. */
{
    register TkWindow *winPtr = (TkWindow *) clientData;

    if (eventPtr->type == DestroyNotify) {
      Tk_ErrorHandler handler;

      if (!(winPtr->flags & TK_ALREADY_DEAD)) {
          /*
           * A top-level window was deleted externally (e.g., by the window
           * manager).  This is probably not a good thing, but cleanup as
           * best we can.  The error handler is needed because
           * Tk_DestroyWindow will try to destroy the window, but of course
           * it's already gone.
           */

          handler = Tk_CreateErrorHandler(winPtr->display, -1, -1, -1,
                (Tk_ErrorProc *) NULL, (ClientData) NULL);
          Tk_DestroyWindow((Tk_Window) winPtr);
          Tk_DeleteErrorHandler(handler);
      }
    }
    else if (eventPtr->type == ConfigureNotify) {
      WmInfo *wmPtr;
      wmPtr = winPtr->wmInfoPtr;

      if (winPtr->flags & TK_EMBEDDED) {
          Tk_Window tkwin = (Tk_Window)winPtr;
          SendMessage(wmPtr->wrapper, TK_GEOMETRYREQ, Tk_ReqWidth(tkwin),
              Tk_ReqHeight(tkwin));
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TopLevelReqProc --
 *
 *    This procedure is invoked by the geometry manager whenever
 *    the requested size for a top-level window is changed.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Arrange for the window to be resized to satisfy the request
 *    (this happens as a when-idle action).
 *
 *----------------------------------------------------------------------
 */

      /* ARGSUSED */
static void
TopLevelReqProc(dummy, tkwin)
    ClientData dummy;               /* Not used. */
    Tk_Window tkwin;                /* Information about window. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    WmInfo *wmPtr;

    wmPtr = winPtr->wmInfoPtr;
    if ((winPtr->flags & TK_EMBEDDED) && (wmPtr->wrapper != NULL)) {
      SendMessage(wmPtr->wrapper, TK_GEOMETRYREQ, Tk_ReqWidth(tkwin),
          Tk_ReqHeight(tkwin));
    }
    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
      wmPtr->flags |= WM_UPDATE_PENDING;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * UpdateGeometryInfo --
 *
 *    This procedure is invoked when a top-level window is first
 *    mapped, and also as a when-idle procedure, to bring the
 *    geometry and/or position of a top-level window back into
 *    line with what has been requested by the user and/or widgets.
 *    This procedure doesn't return until the system has
 *    responded to the geometry change.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The window's size and location may change, unless the WM prevents
 *    that from happening.
 *
 *----------------------------------------------------------------------
 */

static void
UpdateGeometryInfo(clientData)
    ClientData clientData;          /* Pointer to the window's record. */
{
    int x, y;                 /* Position of border on desktop. */
    int width, height;        /* Size of client area. */
    RECT rect;
    register TkWindow *winPtr = (TkWindow *) clientData;
    register WmInfo *wmPtr = winPtr->wmInfoPtr;

    wmPtr->flags &= ~WM_UPDATE_PENDING;

    /*
     * If the window is minimized or maximized, we should not update
     * our geometry since it will end up with the wrong values.
     * ConfigureToplevel will reschedule UpdateGeometryInfo when the
     * state of the window changes.
     */

    if (IsIconic(wmPtr->wrapper) || IsZoomed(wmPtr->wrapper)) {
      return;
    }

    /*
     * Compute the border size for the current window style.  This
     * size will include the resize handles, the title bar and the
     * menubar.  Note that this size will not be correct if the
     * menubar spans multiple lines.  The height will be off by a
     * multiple of the menubar height.  It really only measures the
     * minimum size of the border.
     */

    rect.left = rect.right = rect.top = rect.bottom = 0;
    AdjustWindowRectEx(&rect, wmPtr->style, wmPtr->hMenu != NULL,
          wmPtr->exStyle);
    wmPtr->borderWidth = rect.right - rect.left;
    wmPtr->borderHeight = rect.bottom - rect.top;

    /*
     * Compute the new size for the top-level window.  See the
     * user documentation for details on this, but the size
     * requested depends on (a) the size requested internally
     * by the window's widgets, (b) the size requested by the
     * user in a "wm geometry" command or via wm-based interactive
     * resizing (if any), and (c) whether or not the window is
     * gridded.  Don't permit sizes <= 0 because this upsets
     * the X server.
     */

    if (wmPtr->width == -1) {
      width = winPtr->reqWidth;
    } else if (wmPtr->gridWin != NULL) {
      width = winPtr->reqWidth
            + (wmPtr->width - wmPtr->reqGridWidth)*wmPtr->widthInc;
    } else {
      width = wmPtr->width;
    }
    if (width <= 0) {
      width = 1;
    }
    if (wmPtr->height == -1) {
      height = winPtr->reqHeight;
    } else if (wmPtr->gridWin != NULL) {
      height = winPtr->reqHeight
            + (wmPtr->height - wmPtr->reqGridHeight)*wmPtr->heightInc;
    } else {
      height = wmPtr->height;
    }
    if (height <= 0) {
      height = 1;
    }

    /*
     * Compute the new position for the upper-left pixel of the window's
     * decorative frame.  This is tricky, because we need to include the
     * border widths supplied by a reparented parent in this calculation,
     * but can't use the parent's current overall size since that may
     * change as a result of this code.
     */

    if (wmPtr->flags & WM_NEGATIVE_X) {
      x = DisplayWidth(winPtr->display, winPtr->screenNum) - wmPtr->x
            - (width + wmPtr->borderWidth);
    } else {
      x =  wmPtr->x;
    }
    if (wmPtr->flags & WM_NEGATIVE_Y) {
      y = DisplayHeight(winPtr->display, winPtr->screenNum) - wmPtr->y
            - (height + wmPtr->borderHeight);
    } else {
      y =  wmPtr->y;
    }

    /*
     * If this window is embedded and the container is also in this
     * process, we don't need to do anything special about the
     * geometry, except to make sure that the desired size is known
     * by the container.  Also, zero out any position information,
     * since embedded windows are not allowed to move.
     */

    if (winPtr->flags & TK_BOTH_HALVES) {
      wmPtr->x = wmPtr->y = 0;
      wmPtr->flags &= ~(WM_NEGATIVE_X|WM_NEGATIVE_Y);
      Tk_GeometryRequest((Tk_Window) TkpGetOtherWindow(winPtr),
            width, height);
      return;
    }

    /*
     * Reconfigure the window if it isn't already configured correctly.  Base
     * the size check on what we *asked for* last time, not what we got.
     * Return immediately if there have been no changes in the requested
     * geometry of the toplevel.
     */
    /* TODO: need to add flag for possible menu size change */

    if (!((wmPtr->flags & WM_MOVE_PENDING)
          || (width != wmPtr->configWidth)
          || (height != wmPtr->configHeight))) {
      return;
    }
    wmPtr->flags &= ~WM_MOVE_PENDING;

    wmPtr->configWidth = width;
    wmPtr->configHeight = height;

    /*
     * Don't bother moving the window if we are in the process of
     * creating it.  Just update the geometry info based on what
     * we asked for.
     */

    if (wmPtr->flags & WM_CREATE_PENDING) {
      winPtr->changes.x = x;
      winPtr->changes.y = y;
      winPtr->changes.width = width;
      winPtr->changes.height = height;
      return;
    }

    wmPtr->flags |= WM_SYNC_PENDING;
    if (winPtr->flags & TK_EMBEDDED) {
      /*
       * The wrapper window is in a different process, so we need
       * to send it a geometry request.  This protocol assumes that
       * the other process understands this Tk message, otherwise
       * our requested geometry will be ignored.
       */

      SendMessage(wmPtr->wrapper, TK_GEOMETRYREQ, width, height);
    } else {
      int reqHeight, reqWidth;
      RECT windowRect;
      int menuInc = GetSystemMetrics(SM_CYMENU);
      int newHeight;

      /*
       * We have to keep resizing the window until we get the
       * requested height in the client area. If the client
       * area has zero height, then the window rect is too
       * small by definition. Try increasing the border height
       * and try again. Once we have a positive size, then
       * we can adjust the height exactly. If the window
       * rect comes back smaller than we requested, we have
       * hit the maximum constraints that Windows imposes.
       * Once we find a positive client size, the next size
       * is the one we try no matter what.
       */

      reqHeight = height + wmPtr->borderHeight;
      reqWidth = width + wmPtr->borderWidth;

      while (1) {
          MoveWindow(wmPtr->wrapper, x, y, reqWidth, reqHeight, TRUE);
          GetWindowRect(wmPtr->wrapper, &windowRect);
          newHeight = windowRect.bottom - windowRect.top;

          /*
           * If the request wasn't satisfied, we have hit an external
           * constraint and must stop.
           */

          if (newHeight < reqHeight) {
            break;
          }

          /*
           * Now check the size of the client area against our ideal.
           */

          GetClientRect(wmPtr->wrapper, &windowRect);
          newHeight = windowRect.bottom - windowRect.top;

          if (newHeight == height) {
            /*
             * We're done.
             */
            break;
          } else if (newHeight > height) {
            /*
             * One last resize to get rid of the extra space.
             */
            menuInc = newHeight - height;
            reqHeight -= menuInc;
            if (wmPtr->flags & WM_NEGATIVE_Y) {
                y += menuInc;
            }
            MoveWindow(wmPtr->wrapper, x, y, reqWidth, reqHeight, TRUE);
            break;
          }

          /*
           * We didn't get enough space to satisfy our requested
           * height, so the menu must have wrapped.  Increase the
           * size of the window by one menu height and move the
           * window if it is positioned relative to the lower right
           * corner of the screen.
           */

          reqHeight += menuInc;
          if (wmPtr->flags & WM_NEGATIVE_Y) {
            y -= menuInc;
          }
      }
      if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
          DrawMenuBar(wmPtr->wrapper);
      }
    }
    wmPtr->flags &= ~WM_SYNC_PENDING;
}

/*
 *--------------------------------------------------------------
 *
 * ParseGeometry --
 *
 *    This procedure parses a geometry string and updates
 *    information used to control the geometry of a top-level
 *    window.
 *
 * Results:
 *    A standard Tcl return value, plus an error message in
 *    the interp's result if an error occurs.
 *
 * Side effects:
 *    The size and/or location of winPtr may change.
 *
 *--------------------------------------------------------------
 */

static int
ParseGeometry(interp, string, winPtr)
    Tcl_Interp *interp;       /* Used for error reporting. */
    char *string;       /* String containing new geometry.  Has the
                         * standard form "=wxh+x+y". */
    TkWindow *winPtr;         /* Pointer to top-level window whose
                         * geometry is to be changed. */
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;
    int x, y, width, height, flags;
    char *end;
    register char *p = string;

    /*
     * The leading "=" is optional.
     */

    if (*p == '=') {
      p++;
    }

    /*
     * Parse the width and height, if they are present.  Don't
     * actually update any of the fields of wmPtr until we've
     * successfully parsed the entire geometry string.
     */

    width = wmPtr->width;
    height = wmPtr->height;
    x = wmPtr->x;
    y = wmPtr->y;
    flags = wmPtr->flags;
    if (isdigit(UCHAR(*p))) {
      width = strtoul(p, &end, 10);
      p = end;
      if (*p != 'x') {
          goto error;
      }
      p++;
      if (!isdigit(UCHAR(*p))) {
          goto error;
      }
      height = strtoul(p, &end, 10);
      p = end;
    }

    /*
     * Parse the X and Y coordinates, if they are present.
     */

    if (*p != '\0') {
      flags &= ~(WM_NEGATIVE_X | WM_NEGATIVE_Y);
      if (*p == '-') {
          flags |= WM_NEGATIVE_X;
      } else if (*p != '+') {
          goto error;
      }
      p++;
      if (!isdigit(UCHAR(*p)) && (*p != '-')) {
          goto error;
      }
      x = strtol(p, &end, 10);
      p = end;
      if (*p == '-') {
          flags |= WM_NEGATIVE_Y;
      } else if (*p != '+') {
          goto error;
      }
      p++;
      if (!isdigit(UCHAR(*p)) && (*p != '-')) {
          goto error;
      }
      y = strtol(p, &end, 10);
      if (*end != '\0') {
          goto error;
      }

      /*
       * Assume that the geometry information came from the user,
       * unless an explicit source has been specified.  Otherwise
       * most window managers assume that the size hints were
       * program-specified and they ignore them.
       */

      if ((wmPtr->sizeHintsFlags & (USPosition|PPosition)) == 0) {
          wmPtr->sizeHintsFlags |= USPosition;
      }
    }

    /*
     * Everything was parsed OK.  Update the fields of *wmPtr and
     * arrange for the appropriate information to be percolated out
     * to the window manager at the next idle moment.
     */

    wmPtr->width = width;
    wmPtr->height = height;
    wmPtr->x = x;
    wmPtr->y = y;
    flags |= WM_MOVE_PENDING;
    wmPtr->flags = flags;

    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
      wmPtr->flags |= WM_UPDATE_PENDING;
    }
    return TCL_OK;

    error:
    Tcl_AppendResult(interp, "bad geometry specifier \"",
          string, "\"", (char *) NULL);
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_GetRootCoords --
 *
 *    Given a token for a window, this procedure traces through the
 *    window's lineage to find the (virtual) root-window coordinates
 *    corresponding to point (0,0) in the window.
 *
 * Results:
 *    The locations pointed to by xPtr and yPtr are filled in with
 *    the root coordinates of the (0,0) point in tkwin.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

void
Tk_GetRootCoords(tkwin, xPtr, yPtr)
    Tk_Window tkwin;          /* Token for window. */
    int *xPtr;                /* Where to store x-displacement of (0,0). */
    int *yPtr;                /* Where to store y-displacement of (0,0). */
{
    register TkWindow *winPtr = (TkWindow *) tkwin;

    /*
     * If the window is mapped, let Windows figure out the translation.
     */

    if (winPtr->window != None) {
      HWND hwnd = Tk_GetHWND(winPtr->window);
      POINT point;

      point.x = 0;
      point.y = 0;

      ClientToScreen(hwnd, &point);

      *xPtr = point.x;
      *yPtr = point.y;
    } else {
      *xPtr = 0;
      *yPtr = 0;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_CoordsToWindow --
 *
 *    Given the (virtual) root coordinates of a point, this procedure
 *    returns the token for the top-most window covering that point,
 *    if there exists such a window in this application.
 *
 * Results:
 *    The return result is either a token for the window corresponding
 *    to rootX and rootY, or else NULL to indicate that there is no such
 *    window.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

Tk_Window
Tk_CoordsToWindow(rootX, rootY, tkwin)
    int rootX, rootY;         /* Coordinates of point in root window.  If
                         * a virtual-root window manager is in use,
                         * these coordinates refer to the virtual
                         * root, not the real root. */
    Tk_Window tkwin;          /* Token for any window in application;
                         * used to identify the display. */
{
    POINT pos;
    HWND hwnd;
    TkWindow *winPtr;

    pos.x = rootX;
    pos.y = rootY;
    hwnd = WindowFromPoint(pos);

    winPtr = (TkWindow *) Tk_HWNDToWindow(hwnd);
    if (winPtr && (winPtr->mainPtr == ((TkWindow *) tkwin)->mainPtr)) {
      return (Tk_Window) winPtr;
    }
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_GetVRootGeometry --
 *
 *    This procedure returns information about the virtual root
 *    window corresponding to a particular Tk window.
 *
 * Results:
 *    The values at xPtr, yPtr, widthPtr, and heightPtr are set
 *    with the offset and dimensions of the root window corresponding
 *    to tkwin.  If tkwin is being managed by a virtual root window
 *    manager these values correspond to the virtual root window being
 *    used for tkwin;  otherwise the offsets will be 0 and the
 *    dimensions will be those of the screen.
 *
 * Side effects:
 *    Vroot window information is refreshed if it is out of date.
 *
 *----------------------------------------------------------------------
 */

void
Tk_GetVRootGeometry(tkwin, xPtr, yPtr, widthPtr, heightPtr)
    Tk_Window tkwin;          /* Window whose virtual root is to be
                         * queried. */
    int *xPtr, *yPtr;         /* Store x and y offsets of virtual root
                         * here. */
    int *widthPtr, *heightPtr;      /* Store dimensions of virtual root here. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;

    *xPtr = 0;
    *yPtr = 0;
    *widthPtr = DisplayWidth(winPtr->display, winPtr->screenNum);
    *heightPtr = DisplayHeight(winPtr->display, winPtr->screenNum);
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_MoveToplevelWindow --
 *
 *    This procedure is called instead of Tk_MoveWindow to adjust
 *    the x-y location of a top-level window.  It delays the actual
 *    move to a later time and keeps window-manager information
 *    up-to-date with the move
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The window is eventually moved so that its upper-left corner
 *    (actually, the upper-left corner of the window's decorative
 *    frame, if there is one) is at (x,y).
 *
 *----------------------------------------------------------------------
 */

void
Tk_MoveToplevelWindow(tkwin, x, y)
    Tk_Window tkwin;          /* Window to move. */
    int x, y;                 /* New location for window (within
                         * parent). */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    register WmInfo *wmPtr = winPtr->wmInfoPtr;

    if (!(winPtr->flags & TK_TOP_LEVEL)) {
      panic("Tk_MoveToplevelWindow called with non-toplevel window");
    }
    wmPtr->x = x;
    wmPtr->y = y;
    wmPtr->flags |= WM_MOVE_PENDING;
    wmPtr->flags &= ~(WM_NEGATIVE_X|WM_NEGATIVE_Y);
    if ((wmPtr->sizeHintsFlags & (USPosition|PPosition)) == 0) {
      wmPtr->sizeHintsFlags |= USPosition;
    }

    /*
     * If the window has already been mapped, must bring its geometry
     * up-to-date immediately, otherwise an event might arrive from the
     * server that would overwrite wmPtr->x and wmPtr->y and lose the
     * new position.
     */

    if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
      if (wmPtr->flags & WM_UPDATE_PENDING) {
          Tcl_CancelIdleCall(UpdateGeometryInfo, (ClientData) winPtr);
      }
      UpdateGeometryInfo((ClientData) winPtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWmProtocolEventProc --
 *
 *    This procedure is called by the Tk_HandleEvent whenever a
 *    ClientMessage event arrives whose type is "WM_PROTOCOLS".
 *    This procedure handles the message from the window manager
 *    in an appropriate fashion.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Depends on what sort of handler, if any, was set up for the
 *    protocol.
 *
 *----------------------------------------------------------------------
 */

void
TkWmProtocolEventProc(winPtr, eventPtr)
    TkWindow *winPtr;         /* Window to which the event was sent. */
    XEvent *eventPtr;         /* X event. */
{
    WmInfo *wmPtr;
    register ProtocolHandler *protPtr;
    Atom protocol;
    int result;
    Tcl_Interp *interp;

    wmPtr = winPtr->wmInfoPtr;
    if (wmPtr == NULL) {
      return;
    }
    protocol = (Atom) eventPtr->xclient.data.l[0];
    for (protPtr = wmPtr->protPtr; protPtr != NULL;
          protPtr = protPtr->nextPtr) {
      if (protocol == protPtr->protocol) {
          /*
           * Cache atom name, as we might destroy the window as a
           * result of the eval.
           */
          CONST char *name = Tk_GetAtomName((Tk_Window) winPtr, protocol);

          Tcl_Preserve((ClientData) protPtr);
            interp = protPtr->interp;
            Tcl_Preserve((ClientData) interp);
          result = Tcl_GlobalEval(interp, protPtr->command);
          if (result != TCL_OK) {
            Tcl_AddErrorInfo(interp, "\n    (command for \"");
            Tcl_AddErrorInfo(interp, name);
            Tcl_AddErrorInfo(interp, "\" window manager protocol)");
            Tcl_BackgroundError(interp);
          }
            Tcl_Release((ClientData) interp);
          Tcl_Release((ClientData) protPtr);
          return;
      }
    }

    /*
     * No handler was present for this protocol.  If this is a
     * WM_DELETE_WINDOW message then just destroy the window.
     */

    if (protocol == Tk_InternAtom((Tk_Window) winPtr, "WM_DELETE_WINDOW")) {
      Tk_DestroyWindow((Tk_Window) winPtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWmStackorderToplevelEnumProc --
 *
 *    This procedure is invoked once for each HWND Window on the
 *    display as a result of calling EnumWindows from
 *    TkWmStackorderToplevel.
 *
 * Results:
 *    TRUE to request further iteration.
 *
 * Side effects:
 *    Adds entries to the passed array of TkWindows.
 *
 *----------------------------------------------------------------------
 */

BOOL CALLBACK TkWmStackorderToplevelEnumProc(hwnd, lParam)
    HWND hwnd;     /* handle to parent window */
    LPARAM lParam; /* application-defined value */
{
    Tcl_HashEntry *hPtr;
    TkWindow *childWinPtr;

    TkWmStackorderToplevelPair *pair =
        (TkWmStackorderToplevelPair *) lParam;

    /*fprintf(stderr, "Looking up HWND %d\n", hwnd);*/

    hPtr = Tcl_FindHashEntry(pair->table, (char *) hwnd);
    if (hPtr != NULL) {
        childWinPtr = (TkWindow *) Tcl_GetHashValue(hPtr);
        /* Double check that same HWND does not get passed twice */
        if (childWinPtr == NULL) {
            panic("duplicate HWND in TkWmStackorderToplevelEnumProc");
        } else {
            Tcl_SetHashValue(hPtr, NULL);
        }
        /*fprintf(stderr, "Found mapped HWND %d -> %x (%s)\n", hwnd,
        childWinPtr, childWinPtr->pathName);*/
        *(pair->window_ptr)-- = childWinPtr;
    }
    return TRUE;
}

/*
 *----------------------------------------------------------------------
 *
 * TkWmStackorderToplevelWrapperMap --
 *
 *    This procedure will create a table that maps the wrapper
 *    HWND id for a toplevel to the TkWindow structure that is wraps.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Adds entries to the passed hashtable.
 *
 *----------------------------------------------------------------------
 */

static void
TkWmStackorderToplevelWrapperMap(winPtr, table)
    TkWindow *winPtr;                     /* TkWindow to recurse on */
    Tcl_HashTable *table;           /* Table to maps HWND to TkWindow */
{
    TkWindow *childPtr;
    Tcl_HashEntry *hPtr;
    HWND wrapper;
    int newEntry;

    if (Tk_IsMapped(winPtr) && Tk_IsTopLevel(winPtr) &&
            !Tk_IsEmbedded(winPtr)) {
        wrapper = TkWinGetWrapperWindow((Tk_Window) winPtr);

        /*fprintf(stderr, "Mapped HWND %d to %x (%s)\n", wrapper,
        winPtr, winPtr->pathName);*/

        hPtr = Tcl_CreateHashEntry(table,
            (char *) wrapper, &newEntry);
        Tcl_SetHashValue(hPtr, winPtr);
    }

    for (childPtr = winPtr->childList; childPtr != NULL;
            childPtr = childPtr->nextPtr) {
        TkWmStackorderToplevelWrapperMap(childPtr, table);
    }
}
/*
 *----------------------------------------------------------------------
 *
 * TkWmStackorderToplevel --
 *
 *    This procedure returns the stack order of toplevel windows.
 *
 * Results:
 *    An array of pointers to tk window objects in stacking order
 *    or else NULL if there was an error.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

TkWindow **
TkWmStackorderToplevel(parentPtr)
    TkWindow *parentPtr;            /* Parent toplevel window. */
{
    TkWmStackorderToplevelPair pair;
    TkWindow **windows;
    Tcl_HashTable table;
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;

    /*
     * Map HWND ids to a TkWindow of the wrapped toplevel.
     */

    Tcl_InitHashTable(&table, TCL_ONE_WORD_KEYS);
    TkWmStackorderToplevelWrapperMap(parentPtr, &table);

    windows = (TkWindow **) ckalloc((table.numEntries+1)
        * sizeof(TkWindow *));

    /*
     * Special cases: If zero or one toplevels were mapped
     * there is no need to call EnumWindows.
     */

    switch (table.numEntries) {
    case 0:
        windows[0] = NULL;
        goto done;
    case 1:
        hPtr = Tcl_FirstHashEntry(&table, &search);
        windows[0] = (TkWindow *) Tcl_GetHashValue(hPtr);
        windows[1] = NULL;
        goto done;
    }

    /*
     * We will be inserting into the array starting at the end
     * and working our way to the beginning since EnumWindows
     * returns windows in highest to lowest order.
     */

    pair.table = &table;
    pair.window_ptr = windows + table.numEntries;
    *pair.window_ptr-- = NULL;

    if (EnumWindows((WNDENUMPROC) TkWmStackorderToplevelEnumProc,
          (LPARAM) &pair) == 0) {
        ckfree((char *) windows);
        windows = NULL;
    } else {
        if (pair.window_ptr != (windows-1))
            panic("num matched toplevel windows does not equal num children");
    }

    done:
    Tcl_DeleteHashTable(&table);
    return windows;
}

/*
 *----------------------------------------------------------------------
 *
 * TkWmRestackToplevel --
 *
 *    This procedure restacks a top-level window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    WinPtr gets restacked  as specified by aboveBelow and otherPtr.
 *    This procedure doesn't return until the restack has taken
 *    effect and the ConfigureNotify event for it has been received.
 *
 *----------------------------------------------------------------------
 */

void
TkWmRestackToplevel(winPtr, aboveBelow, otherPtr)
    TkWindow *winPtr;         /* Window to restack. */
    int aboveBelow;           /* Gives relative position for restacking;
                         * must be Above or Below. */
    TkWindow *otherPtr;       /* Window relative to which to restack;
                         * if NULL, then winPtr gets restacked
                         * above or below *all* siblings. */
{
    HWND hwnd, insertAfter;

    /*
     * Can't set stacking order properly until the window is on the
     * screen (mapping it may give it a reparent window).
     */

    if (winPtr->window == None) {
      Tk_MakeWindowExist((Tk_Window) winPtr);
    }
    if (winPtr->wmInfoPtr->flags & WM_NEVER_MAPPED) {
      TkWmMapWindow(winPtr);
    }
    hwnd = (winPtr->wmInfoPtr->wrapper != NULL)
      ? winPtr->wmInfoPtr->wrapper : Tk_GetHWND(winPtr->window);

    if (otherPtr != NULL) {
      if (otherPtr->window == None) {
          Tk_MakeWindowExist((Tk_Window) otherPtr);
      }
      if (otherPtr->wmInfoPtr->flags & WM_NEVER_MAPPED) {
          TkWmMapWindow(otherPtr);
      }
      insertAfter = (otherPtr->wmInfoPtr->wrapper != NULL)
          ? otherPtr->wmInfoPtr->wrapper : Tk_GetHWND(otherPtr->window);
    } else {
      insertAfter = NULL;
    }

    TkWinSetWindowPos(hwnd, insertAfter, aboveBelow);
}

/*
 *----------------------------------------------------------------------
 *
 * TkWmAddToColormapWindows --
 *
 *    This procedure is called to add a given window to the
 *    WM_COLORMAP_WINDOWS property for its top-level, if it
 *    isn't already there.  It is invoked by the Tk code that
 *    creates a new colormap, in order to make sure that colormap
 *    information is propagated to the window manager by default.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    WinPtr's window gets added to the WM_COLORMAP_WINDOWS
 *    property of its nearest top-level ancestor, unless the
 *    colormaps have been set explicitly with the
 *    "wm colormapwindows" command.
 *
 *----------------------------------------------------------------------
 */

void
TkWmAddToColormapWindows(winPtr)
    TkWindow *winPtr;         /* Window with a non-default colormap.
                         * Should not be a top-level window. */
{
    TkWindow *topPtr;
    TkWindow **oldPtr, **newPtr;
    int count, i;

    if (winPtr->window == None) {
      return;
    }

    for (topPtr = winPtr->parentPtr; ; topPtr = topPtr->parentPtr) {
      if (topPtr == NULL) {
          /*
           * Window is being deleted.  Skip the whole operation.
           */

          return;
      }
      if (topPtr->flags & TK_TOP_HIERARCHY) {
          break;
      }
    }
    if (topPtr->wmInfoPtr == NULL) {
      return;
    }

    if (topPtr->wmInfoPtr->flags & WM_COLORMAPS_EXPLICIT) {
      return;
    }

    /*
     * Make sure that the window isn't already in the list.
     */

    count = topPtr->wmInfoPtr->cmapCount;
    oldPtr = topPtr->wmInfoPtr->cmapList;

    for (i = 0; i < count; i++) {
      if (oldPtr[i] == winPtr) {
          return;
      }
    }

    /*
     * Make a new bigger array and use it to reset the property.
     * Automatically add the toplevel itself as the last element
     * of the list.
     */

    newPtr = (TkWindow **) ckalloc((unsigned) ((count+2)*sizeof(TkWindow*)));
    if (count > 0) {
      memcpy(newPtr, oldPtr, count * sizeof(TkWindow*));
    }
    if (count == 0) {
      count++;
    }
    newPtr[count-1] = winPtr;
    newPtr[count] = topPtr;
    if (oldPtr != NULL) {
      ckfree((char *) oldPtr);
    }

    topPtr->wmInfoPtr->cmapList = newPtr;
    topPtr->wmInfoPtr->cmapCount = count+1;

    /*
     * Now we need to force the updated colormaps to be installed.
     */

    if (topPtr->wmInfoPtr == winPtr->dispPtr->foregroundWmPtr) {
      InstallColormaps(topPtr->wmInfoPtr->wrapper, WM_QUERYNEWPALETTE, 1);
    } else {
      InstallColormaps(topPtr->wmInfoPtr->wrapper, WM_PALETTECHANGED, 0);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWmRemoveFromColormapWindows --
 *
 *    This procedure is called to remove a given window from the
 *    WM_COLORMAP_WINDOWS property for its top-level.  It is invoked
 *    when windows are deleted.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    WinPtr's window gets removed from the WM_COLORMAP_WINDOWS
 *    property of its nearest top-level ancestor, unless the
 *    top-level itself is being deleted too.
 *
 *----------------------------------------------------------------------
 */

void
TkWmRemoveFromColormapWindows(winPtr)
    TkWindow *winPtr;         /* Window that may be present in
                         * WM_COLORMAP_WINDOWS property for its
                         * top-level.  Should not be a top-level
                         * window. */
{
    TkWindow *topPtr;
    TkWindow **oldPtr;
    int count, i, j;

    for (topPtr = winPtr->parentPtr; ; topPtr = topPtr->parentPtr) {
      if (topPtr == NULL) {
          /*
           * Ancestors have been deleted, so skip the whole operation.
           * Seems like this can't ever happen?
           */

          return;
      }
      if (topPtr->flags & TK_TOP_LEVEL) {
          break;
      }
    }
    if (topPtr->flags & TK_ALREADY_DEAD) {
      /*
       * Top-level is being deleted, so there's no need to cleanup
       * the WM_COLORMAP_WINDOWS property.
       */

      return;
    }

    if (topPtr->wmInfoPtr == NULL) {
      return;
    }

    /*
     * Find the window and slide the following ones down to cover
     * it up.
     */

    count = topPtr->wmInfoPtr->cmapCount;
    oldPtr = topPtr->wmInfoPtr->cmapList;
    for (i = 0; i < count; i++) {
      if (oldPtr[i] == winPtr) {
          for (j = i ; j < count-1; j++) {
            oldPtr[j] = oldPtr[j+1];
          }
          topPtr->wmInfoPtr->cmapCount = count-1;
          break;
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWinSetMenu--
 *
 *    Associcates a given HMENU to a window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The menu will end up being drawn in the window, and the geometry
 *    of the window will have to be changed.
 *
 *----------------------------------------------------------------------
 */

void
TkWinSetMenu(tkwin, hMenu)
    Tk_Window tkwin;          /* the window to put the menu in */
    HMENU hMenu;        /* the menu to set */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    WmInfo *wmPtr = winPtr->wmInfoPtr;

    wmPtr->hMenu = hMenu;

    if (!(wmPtr->flags & TK_EMBEDDED)) {
      if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
          int syncPending = wmPtr->flags & WM_SYNC_PENDING;

          wmPtr->flags |= WM_SYNC_PENDING;
          SetMenu(wmPtr->wrapper, hMenu);
          if (!syncPending) {
            wmPtr->flags &= ~WM_SYNC_PENDING;
          }
      }
      if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
          Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
          wmPtr->flags |= WM_UPDATE_PENDING|WM_MOVE_PENDING;
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * ConfigureTopLevel --
 *
 *    Generate a ConfigureNotify event based on the current position
 *    information.  This procedure is called by TopLevelProc.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Queues a new event.
 *
 *----------------------------------------------------------------------
 */

static void
ConfigureTopLevel(pos)
    WINDOWPOS *pos;
{
    TkWindow *winPtr = GetTopLevel(pos->hwnd);
    WmInfo *wmPtr;
    int state;                /* Current window state. */
    RECT rect;
    WINDOWPLACEMENT windowPos;

    if (winPtr == NULL) {
      return;
    }

    wmPtr = winPtr->wmInfoPtr;

    /*
     * Determine the current window state.
     */

    if (!IsWindowVisible(wmPtr->wrapper)) {
      state = WithdrawnState;
    } else {
      windowPos.length = sizeof(WINDOWPLACEMENT);
      GetWindowPlacement(wmPtr->wrapper, &windowPos);
      switch (windowPos.showCmd) {
          case SW_SHOWMAXIMIZED:
            state = ZoomState;
            break;
          case SW_SHOWMINIMIZED:
            state = IconicState;
            break;
          case SW_SHOWNORMAL:
            state = NormalState;
            break;
      }
    }

    /*
     * If the state of the window just changed, be sure to update the
     * child window information.
     */

    if (wmPtr->hints.initial_state != state) {
      wmPtr->hints.initial_state = state;
      switch (state) {
          case WithdrawnState:
          case IconicState:
            XUnmapWindow(winPtr->display, winPtr->window);
            break;

          case NormalState:
            /*
             * Schedule a geometry update.  Since we ignore geometry
             * requests while in any other state, the geometry info
             * may be stale.
             */

            if (!(wmPtr->flags & WM_UPDATE_PENDING)) {
                Tcl_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
                wmPtr->flags |= WM_UPDATE_PENDING;
            }
            /* fall through */
          case ZoomState:
            XMapWindow(winPtr->display, winPtr->window);
            pos->flags |= SWP_NOMOVE | SWP_NOSIZE;
            break;
      }
    }

    /*
     * Don't report geometry changes in the Iconic or Withdrawn states.
     */

    if (state == WithdrawnState || state == IconicState) {
      return;
    }


    /*
     * Compute the current geometry of the client area, reshape the
     * Tk window and generate a ConfigureNotify event.
     */

    GetClientRect(wmPtr->wrapper, &rect);
    winPtr->changes.x = pos->x;
    winPtr->changes.y = pos->y;
    winPtr->changes.width = rect.right - rect.left;
    winPtr->changes.height = rect.bottom - rect.top;
    wmPtr->borderHeight = pos->cy - winPtr->changes.height;
    MoveWindow(Tk_GetHWND(winPtr->window), 0, 0,
          winPtr->changes.width, winPtr->changes.height, TRUE);
    GenerateConfigureNotify(winPtr);

    /*
     * Update window manager geometry info if needed.
     */

    if (state == NormalState) {

      /*
       * Update size information from the event.  There are a couple of
       * tricky points here:
       *
       * 1. If the user changed the size externally then set wmPtr->width
       *    and wmPtr->height just as if a "wm geometry" command had been
       *    invoked with the same information.
       * 2. However, if the size is changing in response to a request
       *    coming from us (sync is set), then don't set
       *    wmPtr->width or wmPtr->height (otherwise the window will stop
       *    tracking geometry manager requests).
       */

      if (!(wmPtr->flags & WM_SYNC_PENDING)) {
          if (!(pos->flags & SWP_NOSIZE)) {
            if ((wmPtr->width == -1)
                  && (winPtr->changes.width == winPtr->reqWidth)) {
                /*
                 * Don't set external width, since the user didn't
                 * change it from what the widgets asked for.
                 */
            } else {
                if (wmPtr->gridWin != NULL) {
                  wmPtr->width = wmPtr->reqGridWidth
                      + (winPtr->changes.width - winPtr->reqWidth)
                      / wmPtr->widthInc;
                  if (wmPtr->width < 0) {
                      wmPtr->width = 0;
                  }
                } else {
                  wmPtr->width = winPtr->changes.width;
                }
            }
            if ((wmPtr->height == -1)
                  && (winPtr->changes.height == winPtr->reqHeight)) {
                /*
                 * Don't set external height, since the user didn't change
                 * it from what the widgets asked for.
                 */
            } else {
                if (wmPtr->gridWin != NULL) {
                  wmPtr->height = wmPtr->reqGridHeight
                      + (winPtr->changes.height - winPtr->reqHeight)
                      / wmPtr->heightInc;
                  if (wmPtr->height < 0) {
                      wmPtr->height = 0;
                  }
                } else {
                  wmPtr->height = winPtr->changes.height;
                }
            }
            wmPtr->configWidth = winPtr->changes.width;
            wmPtr->configHeight = winPtr->changes.height;
          }
          /*
           * If the user moved the window, we should switch back
           * to normal coordinates.
           */

          if (!(pos->flags & SWP_NOMOVE)) {
            wmPtr->flags &= ~(WM_NEGATIVE_X | WM_NEGATIVE_Y);
          }
      }

      /*
       * Update the wrapper window location information.
       */

      if (wmPtr->flags & WM_NEGATIVE_X) {
          wmPtr->x = DisplayWidth(winPtr->display, winPtr->screenNum)
            - winPtr->changes.x - (winPtr->changes.width
                  + wmPtr->borderWidth);
      } else {
          wmPtr->x = winPtr->changes.x;
      }
      if (wmPtr->flags & WM_NEGATIVE_Y) {
          wmPtr->y = DisplayHeight(winPtr->display, winPtr->screenNum)
            - winPtr->changes.y - (winPtr->changes.height
                  + wmPtr->borderHeight);
      } else {
          wmPtr->y = winPtr->changes.y;
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * GenerateConfigureNotify --
 *
 *    Generate a ConfigureNotify event from the current geometry
 *    information for the specified toplevel window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Sends an X event.
 *
 *----------------------------------------------------------------------
 */

static void
GenerateConfigureNotify(winPtr)
    TkWindow *winPtr;
{
    XEvent event;

    /*
     * Generate a ConfigureNotify event.
     */

    event.type = ConfigureNotify;
    event.xconfigure.serial = winPtr->display->request;
    event.xconfigure.send_event = False;
    event.xconfigure.display = winPtr->display;
    event.xconfigure.event = winPtr->window;
    event.xconfigure.window = winPtr->window;
    event.xconfigure.border_width = winPtr->changes.border_width;
    event.xconfigure.override_redirect = winPtr->atts.override_redirect;
    event.xconfigure.x = winPtr->changes.x;
    event.xconfigure.y = winPtr->changes.y;
    event.xconfigure.width = winPtr->changes.width;
    event.xconfigure.height = winPtr->changes.height;
    event.xconfigure.above = None;
    Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
}

/*
 *----------------------------------------------------------------------
 *
 * InstallColormaps --
 *
 *    Installs the colormaps associated with the toplevel which is
 *    currently active.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    May change the system palette and generate damage.
 *
 *----------------------------------------------------------------------
 */

static int
InstallColormaps(hwnd, message, isForemost)
    HWND hwnd;                /* Toplevel wrapper window whose colormaps
                         * should be installed. */
    int message;        /* Either WM_PALETTECHANGED or
                         * WM_QUERYNEWPALETTE */
    int isForemost;           /* 1 if window is foremost, else 0 */
{
    int i;
    HDC dc;
    HPALETTE oldPalette;
    TkWindow *winPtr = GetTopLevel(hwnd);
    WmInfo *wmPtr;
    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
            Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    if (winPtr == NULL) {
      return 0;
    }

    wmPtr = winPtr->wmInfoPtr;

    if (message == WM_QUERYNEWPALETTE) {
      /*
       * Case 1: This window is about to become the foreground window, so we
       * need to install the primary palette. If the system palette was
       * updated, then Windows will generate a WM_PALETTECHANGED message.
       * Otherwise, we have to synthesize one in order to ensure that the
       * secondary palettes are installed properly.
       */

      winPtr->dispPtr->foregroundWmPtr = wmPtr;

      if (wmPtr->cmapCount > 0) {
          winPtr = wmPtr->cmapList[0];
      }

      tsdPtr->systemPalette = TkWinGetPalette(winPtr->atts.colormap);
      dc = GetDC(hwnd);
      oldPalette = SelectPalette(dc, tsdPtr->systemPalette, FALSE);
      if (RealizePalette(dc)) {
          RefreshColormap(winPtr->atts.colormap, winPtr->dispPtr);
      } else if (wmPtr->cmapCount > 1) {
          SelectPalette(dc, oldPalette, TRUE);
          RealizePalette(dc);
          ReleaseDC(hwnd, dc);
          SendMessage(hwnd, WM_PALETTECHANGED, (WPARAM)hwnd,
                (LPARAM)NULL);
          return TRUE;
      }

    } else {
      /*
       * Window is being notified of a change in the system palette.
       * If this window is the foreground window, then we should only
       * install the secondary palettes, since the primary was installed
       * in response to the WM_QUERYPALETTE message.  Otherwise, install
       * all of the palettes.
       */


      if (!isForemost) {
          if (wmPtr->cmapCount > 0) {
            winPtr = wmPtr->cmapList[0];
          }
          i = 1;
      } else {
          if (wmPtr->cmapCount <= 1) {
            return TRUE;
          }
          winPtr = wmPtr->cmapList[1];
          i = 2;
      }
      dc = GetDC(hwnd);
      oldPalette = SelectPalette(dc,
            TkWinGetPalette(winPtr->atts.colormap), TRUE);
      if (RealizePalette(dc)) {
          RefreshColormap(winPtr->atts.colormap, winPtr->dispPtr);
      }
      for (; i < wmPtr->cmapCount; i++) {
          winPtr = wmPtr->cmapList[i];
          SelectPalette(dc, TkWinGetPalette(winPtr->atts.colormap), TRUE);
          if (RealizePalette(dc)) {
            RefreshColormap(winPtr->atts.colormap, winPtr->dispPtr);
          }
      }
    }

    SelectPalette(dc, oldPalette, TRUE);
    RealizePalette(dc);
    ReleaseDC(hwnd, dc);
    return TRUE;
}

/*
 *----------------------------------------------------------------------
 *
 * RefreshColormap --
 *
 *    This function is called to force all of the windows that use
 *    a given colormap to redraw themselves.  The quickest way to
 *    do this is to iterate over the toplevels, looking in the
 *    cmapList for matches.  This will quickly eliminate subtrees
 *    that don't use a given colormap.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Causes damage events to be generated.
 *
 *----------------------------------------------------------------------
 */

static void
RefreshColormap(colormap, dispPtr)
    Colormap colormap;
    TkDisplay *dispPtr;
{
    WmInfo *wmPtr;
    int i;

    for (wmPtr = dispPtr->firstWmPtr; wmPtr != NULL; wmPtr = wmPtr->nextPtr) {
      if (wmPtr->cmapCount > 0) {
          for (i = 0; i < wmPtr->cmapCount; i++) {
            if ((wmPtr->cmapList[i]->atts.colormap == colormap)
                  && Tk_IsMapped(wmPtr->cmapList[i])) {
                InvalidateSubTree(wmPtr->cmapList[i], colormap);
            }
          }
      } else if ((wmPtr->winPtr->atts.colormap == colormap)
            && Tk_IsMapped(wmPtr->winPtr)) {
          InvalidateSubTree(wmPtr->winPtr, colormap);
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * InvalidateSubTree --
 *
 *    This function recursively generates damage for a window and
 *    all of its mapped children that belong to the same toplevel and
 *    are using the specified colormap.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Generates damage for the specified subtree.
 *
 *----------------------------------------------------------------------
 */

static void
InvalidateSubTree(winPtr, colormap)
    TkWindow *winPtr;
    Colormap colormap;
{
    TkWindow *childPtr;

    /*
     * Generate damage for the current window if it is using the
     * specified colormap.
     */

    if (winPtr->atts.colormap == colormap) {
      InvalidateRect(Tk_GetHWND(winPtr->window), NULL, FALSE);
    }

    for (childPtr = winPtr->childList; childPtr != NULL;
          childPtr = childPtr->nextPtr) {
      /*
       * We can stop the descent when we hit an unmapped or
       * toplevel window.
       */

      if (!Tk_TopWinHierarchy(childPtr) && Tk_IsMapped(childPtr)) {
          InvalidateSubTree(childPtr, colormap);
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkWinGetSystemPalette --
 *
 *    Retrieves the currently installed foreground palette.
 *
 * Results:
 *    Returns the global foreground palette, if there is one.
 *    Otherwise, returns NULL.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

HPALETTE
TkWinGetSystemPalette()
{
    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
            Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));

    return tsdPtr->systemPalette;
}

/*
 *----------------------------------------------------------------------
 *
 * GetMinSize --
 *
 *    This procedure computes the current minWidth and minHeight
 *    values for a window, taking into account the possibility
 *    that they may be defaulted.
 *
 * Results:
 *    The values at *minWidthPtr and *minHeightPtr are filled
 *    in with the minimum allowable dimensions of wmPtr's window,
 *    in grid units.  If the requested minimum is smaller than the
 *    system required minimum, then this procedure computes the
 *    smallest size that will satisfy both the system and the
 *    grid constraints.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

static void
GetMinSize(wmPtr, minWidthPtr, minHeightPtr)
    WmInfo *wmPtr;            /* Window manager information for the
                         * window. */
    int *minWidthPtr;         /* Where to store the current minimum
                         * width of the window. */
    int *minHeightPtr;        /* Where to store the current minimum
                         * height of the window. */
{
    int tmp, base;
    TkWindow *winPtr = wmPtr->winPtr;

    /*
     * Compute the minimum width by taking the default client size
     * and rounding it up to the nearest grid unit.  Return the greater
     * of the default minimum and the specified minimum.
     */

    tmp = wmPtr->defMinWidth - wmPtr->borderWidth;
    if (tmp < 0) {
      tmp = 0;
    }
    if (wmPtr->gridWin != NULL) {
      base = winPtr->reqWidth - (wmPtr->reqGridWidth * wmPtr->widthInc);
      if (base < 0) {
          base = 0;
      }
      tmp = ((tmp - base) + wmPtr->widthInc - 1)/wmPtr->widthInc;
    }
    if (tmp < wmPtr->minWidth) {
      tmp = wmPtr->minWidth;
    }
    *minWidthPtr = tmp;

    /*
     * Compute the minimum height in a similar fashion.
     */

    tmp = wmPtr->defMinHeight - wmPtr->borderHeight;
    if (tmp < 0) {
      tmp = 0;
    }
    if (wmPtr->gridWin != NULL) {
      base = winPtr->reqHeight - (wmPtr->reqGridHeight * wmPtr->heightInc);
      if (base < 0) {
          base = 0;
      }
      tmp = ((tmp - base) + wmPtr->heightInc - 1)/wmPtr->heightInc;
    }
    if (tmp < wmPtr->minHeight) {
      tmp = wmPtr->minHeight;
    }
    *minHeightPtr = tmp;
}

/*
 *----------------------------------------------------------------------
 *
 * GetMaxSize --
 *
 *    This procedure computes the current maxWidth and maxHeight
 *    values for a window, taking into account the possibility
 *    that they may be defaulted.
 *
 * Results:
 *    The values at *maxWidthPtr and *maxHeightPtr are filled
 *    in with the maximum allowable dimensions of wmPtr's window,
 *    in grid units.  If no maximum has been specified for the
 *    window, then this procedure computes the largest sizes that
 *    will fit on the screen.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

static void
GetMaxSize(wmPtr, maxWidthPtr, maxHeightPtr)
    WmInfo *wmPtr;            /* Window manager information for the
                         * window. */
    int *maxWidthPtr;         /* Where to store the current maximum
                         * width of the window. */
    int *maxHeightPtr;        /* Where to store the current maximum
                         * height of the window. */
{
    int tmp;

    if (wmPtr->maxWidth > 0) {
      *maxWidthPtr = wmPtr->maxWidth;
    } else {
      /*
       * Must compute a default width.  Fill up the display, leaving a
       * bit of extra space for the window manager's borders.
       */

      tmp = wmPtr->defMaxWidth - wmPtr->borderWidth;
      if (wmPtr->gridWin != NULL) {
          /*
           * Gridding is turned on;  convert from pixels to grid units.
           */

          tmp = wmPtr->reqGridWidth
                + (tmp - wmPtr->winPtr->reqWidth)/wmPtr->widthInc;
      }
      *maxWidthPtr = tmp;
    }
    if (wmPtr->maxHeight > 0) {
      *maxHeightPtr = wmPtr->maxHeight;
    } else {
      tmp = wmPtr->defMaxHeight - wmPtr->borderHeight;
      if (wmPtr->gridWin != NULL) {
          tmp = wmPtr->reqGridHeight
                + (tmp - wmPtr->winPtr->reqHeight)/wmPtr->heightInc;
      }
      *maxHeightPtr = tmp;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TopLevelProc --
 *
 *    Callback from Windows whenever an event occurs on a top level
 *    window.
 *
 * Results:
 *    Standard Windows return value.
 *
 * Side effects:
 *    Default window behavior.
 *
 *----------------------------------------------------------------------
 */

static LRESULT CALLBACK
TopLevelProc(hwnd, message, wParam, lParam)
    HWND hwnd;
    UINT message;
    WPARAM wParam;
    LPARAM lParam;
{
    if (message == WM_WINDOWPOSCHANGED) {
      WINDOWPOS *pos = (WINDOWPOS *) lParam;
      TkWindow *winPtr = (TkWindow *) Tk_HWNDToWindow(pos->hwnd);

      if (winPtr == NULL) {
          return 0;
      }

      /*
       * Update the shape of the contained window.
       */

      if (!(pos->flags & SWP_NOSIZE)) {
          winPtr->changes.width = pos->cx;
          winPtr->changes.height = pos->cy;
      }
      if (!(pos->flags & SWP_NOMOVE)) {
          winPtr->changes.x = pos->x;
          winPtr->changes.y = pos->y;
      }

      GenerateConfigureNotify(winPtr);

      Tcl_ServiceAll();
      return 0;
    }
    return TkWinChildProc(hwnd, message, wParam, lParam);
}

/*
 *----------------------------------------------------------------------
 *
 * WmProc --
 *
 *    Callback from Windows whenever an event occurs on the decorative
 *    frame.
 *
 * Results:
 *    Standard Windows return value.
 *
 * Side effects:
 *    Default window behavior.
 *
 *----------------------------------------------------------------------
 */

static LRESULT CALLBACK
WmProc(hwnd, message, wParam, lParam)
    HWND hwnd;
    UINT message;
    WPARAM wParam;
    LPARAM lParam;
{
    static int inMoveSize = 0;
    static int oldMode; /* This static is set upon entering move/size mode
                   * and is used to reset the service mode after
                   * leaving move/size mode.  Note that this mechanism
                   * assumes move/size is only one level deep. */
    LRESULT result;
    TkWindow *winPtr = NULL;

    if (TkWinHandleMenuEvent(&hwnd, &message, &wParam, &lParam, &result)) {
      goto done;
    }

    switch (message) {
      case WM_KILLFOCUS:
      case WM_ERASEBKGND:
          result = 0;
          goto done;

      case WM_ENTERSIZEMOVE:
          inMoveSize = 1;

          /*
           * Cancel any current mouse timer.  If the mouse timer
           * fires during the size/move mouse capture, it will
           * release the capture, which is wrong.
           */

          TkWinCancelMouseTimer();

          oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
          break;

      case WM_ACTIVATE:
      case WM_EXITSIZEMOVE:
          if (inMoveSize) {
            inMoveSize = 0;
            Tcl_SetServiceMode(oldMode);
          }
          break;

      case WM_GETMINMAXINFO:
          SetLimits(hwnd, (MINMAXINFO *) lParam);
          result = 0;
          goto done;

      case WM_PALETTECHANGED:
          result = InstallColormaps(hwnd, WM_PALETTECHANGED,
                hwnd == (HWND)wParam);
          goto done;

      case WM_QUERYNEWPALETTE:
          result = InstallColormaps(hwnd, WM_QUERYNEWPALETTE, TRUE);
          goto done;

      case WM_WINDOWPOSCHANGED:
          ConfigureTopLevel((WINDOWPOS *) lParam);
          result = 0;
          goto done;

      case WM_NCHITTEST: {
          winPtr = GetTopLevel(hwnd);
          if (winPtr && (TkGrabState(winPtr) == TK_GRAB_EXCLUDED)) {
            /*
             * This window is outside the grab heirarchy, so don't let any
             * of the normal non-client processing occur.  Note that this
             * implementation is not strictly correct because the grab
             * might change between now and when the event would have been
             * processed by Tk, but it's close enough.
             */

            result = HTCLIENT;
            goto done;
          }
          break;
      }

      case WM_MOUSEACTIVATE: {
          ActivateEvent *eventPtr;
          winPtr = GetTopLevel((HWND) wParam);

          if (winPtr && (TkGrabState(winPtr) != TK_GRAB_EXCLUDED)) {
            /*
             * This allows us to pass the message onto the
             * native menus [Bug: 2272]
             */
            result = (*tkWinProcs->defWindowProc)(hwnd, message,
                  wParam, lParam);
            goto done;
          }

          /*
           * Don't activate the window yet since there is a grab
           * that takes precedence.  Instead we need to queue
           * an event so we can check the grab state right before we
           * handle the mouse event.
           */

          if (winPtr) {
            eventPtr = (ActivateEvent *)ckalloc(sizeof(ActivateEvent));
            eventPtr->ev.proc = ActivateWindow;
            eventPtr->winPtr = winPtr;
            Tcl_QueueEvent((Tcl_Event*)eventPtr, TCL_QUEUE_TAIL);
          }
          result = MA_NOACTIVATE;
          goto done;
      }

      default:
          break;
    }

    winPtr = GetTopLevel(hwnd);
    if (winPtr && winPtr->window) {
      HWND child = Tk_GetHWND(winPtr->window);
      if (message == WM_SETFOCUS) {
          SetFocus(child);
          result = 0;
      } else if (!Tk_TranslateWinEvent(child, message, wParam, lParam,
            &result)) {
          result = (*tkWinProcs->defWindowProc)(hwnd, message,
                wParam, lParam);
      }
    } else {
      result = (*tkWinProcs->defWindowProc)(hwnd, message, wParam, lParam);
    }

    done:
    Tcl_ServiceAll();
    return result;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpMakeMenuWindow --
 *
 *    Configure the window to be either a pull-down (or pop-up)
 *    menu, or as a toplevel (torn-off) menu or palette.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Changes the style bit used to create a new toplevel.
 *
 *----------------------------------------------------------------------
 */

void
TkpMakeMenuWindow(tkwin, transient)
    Tk_Window tkwin;          /* New window. */
    int transient;            /* 1 means menu is only posted briefly as
                         * a popup or pulldown or cascade.  0 means
                         * menu is always visible, e.g. as a torn-off
                         * menu.  Determines whether save_under and
                         * override_redirect should be set. */
{
    XSetWindowAttributes atts;

    if (transient) {
      atts.override_redirect = True;
      atts.save_under = True;
    } else {
      atts.override_redirect = False;
      atts.save_under = False;
    }

    if ((atts.override_redirect != Tk_Attributes(tkwin)->override_redirect)
          || (atts.save_under != Tk_Attributes(tkwin)->save_under)) {
      Tk_ChangeWindowAttributes(tkwin,
            CWOverrideRedirect|CWSaveUnder, &atts);
    }

}

/*
 *----------------------------------------------------------------------
 *
 * TkWinGetWrapperWindow --
 *
 *    Gets the Windows HWND for a given window.
 *
 * Results:
 *    Returns the wrapper window for a Tk window.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

HWND
TkWinGetWrapperWindow(
    Tk_Window tkwin)          /* The window we need the wrapper from */
{
    TkWindow *winPtr = (TkWindow *)tkwin;
    return (winPtr->wmInfoPtr->wrapper);
}


/*
 *----------------------------------------------------------------------
 *
 * TkWmFocusToplevel --
 *
 *    This is a utility procedure invoked by focus-management code. It
 *    exists because of the extra wrapper windows that exist under
 *    Unix; its job is to map from wrapper windows to the
 *    corresponding toplevel windows.  On PCs and Macs there are no
 *    wrapper windows so no mapping is necessary;  this procedure just
 *    determines whether a window is a toplevel or not.
 *
 * Results:
 *    If winPtr is a toplevel window, returns the pointer to the
 *    window; otherwise returns NULL.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

TkWindow *
TkWmFocusToplevel(winPtr)
    TkWindow *winPtr;         /* Window that received a focus-related
                         * event. */
{
    if (!(winPtr->flags & TK_TOP_HIERARCHY)) {
      return NULL;
    }
    return winPtr;
}
 
/*
 *----------------------------------------------------------------------
 *
 * TkpGetWrapperWindow --
 *
 *    This is a utility procedure invoked by focus-management code. It
 *    maps to the wrapper for a top-level, which is just the same
 *    as the top-level on Macs and PCs.
 *
 * Results:
 *    If winPtr is a toplevel window, returns the pointer to the
 *    window; otherwise returns NULL.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

TkWindow *
TkpGetWrapperWindow(
    TkWindow *winPtr)         /* Window that received a focus-related
                         * event. */
{
    if (!(winPtr->flags & TK_TOP_HIERARCHY)) {
      return NULL;
    }
    return winPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * ActivateWindow --
 *
 *    This function is called when an ActivateEvent is processed.
 *
 * Results:
 *    Returns 1 to indicate that the event was handled, else 0.
 *
 * Side effects:
 *    May activate the toplevel window associated with the event.
 *
 *----------------------------------------------------------------------
 */

static int
ActivateWindow(
    Tcl_Event *evPtr,         /* Pointer to ActivateEvent. */
    int flags)                /* Notifier event mask. */
{
    TkWindow *winPtr;

    if (! (flags & TCL_WINDOW_EVENTS)) {
      return 0;
    }

    winPtr = ((ActivateEvent *) evPtr)->winPtr;

    /*
     * Ensure that the window is not excluded by a grab.
     */

    if (winPtr && (TkGrabState(winPtr) != TK_GRAB_EXCLUDED)) {
      SetFocus(Tk_GetHWND(winPtr->window));
    }

    return 1;
}


/*
 *----------------------------------------------------------------------
 *
 * TkWinSetForegroundWindow --
 *
 *    This function is a wrapper for SetForegroundWindow, calling
 *      it on the wrapper window because it has no affect on child
 *      windows.
 *
 * Results:
 *    none
 *
 * Side effects:
 *    May activate the toplevel window.
 *
 *----------------------------------------------------------------------
 */

void
TkWinSetForegroundWindow(winPtr)
    TkWindow *winPtr;
{
    register WmInfo *wmPtr = winPtr->wmInfoPtr;

    if (wmPtr->wrapper != NULL) {
      SetForegroundWindow(wmPtr->wrapper);
    } else {
      SetForegroundWindow(Tk_GetHWND(winPtr->window));
    }
}

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