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tkMacOSXWm.c

/* 
 * tkMacOSXWm.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) 1994-1997 Sun Microsystems, Inc.
 * Copyright 2001, Apple Computer, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tkMacOSXWm.c,v 1.1.1.1 2004/04/02 22:35:07 joye Exp $
 */
#include <Carbon/Carbon.h>

#include "tkPort.h"
#include "tkInt.h"
#include "tkMacOSXInt.h"
#include <errno.h>
#include "tkScrollbar.h"
#include "tkMacOSXWm.h"
#include "tkMacOSXEvent.h"

/*
 * This is a list of all of the toplevels that have been mapped so far. It is
 * used by the menu code to inval windows that were damaged by menus, and will
 * eventually also be used to keep track of floating windows.
 */

TkMacOSXWindowList *tkMacOSXWindowListPtr = NULL;

/*
 * The variable below is used to enable or disable tracing in this
 * module.  If tracing is enabled, then information is printed on
 * standard output about interesting interactions with the window
 * manager.
 */

static int wmTracing = 0;

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

static void       TopLevelReqProc _ANSI_ARGS_((ClientData dummy,
      Tk_Window tkwin));

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

/*
 * Hash table for Mac Window -> TkWindow mapping.
 */

static Tcl_HashTable windowTable;
static int windowHashInit = false;

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

static void       InitialWindowBounds _ANSI_ARGS_((TkWindow *winPtr, 
                      Rect *geometry));
static int        ParseGeometry _ANSI_ARGS_((Tcl_Interp *interp,
                      char *string, TkWindow *winPtr));
static void       TopLevelEventProc _ANSI_ARGS_((ClientData clientData,
                      XEvent *eventPtr));
static void             TkWmStackorderToplevelWrapperMap _ANSI_ARGS_((
                            TkWindow *winPtr, Tcl_HashTable *table));
static void       TopLevelReqProc _ANSI_ARGS_((ClientData dummy,
                      Tk_Window tkwin));
static void       UpdateGeometryInfo _ANSI_ARGS_((
                      ClientData clientData));
static void       UpdateSizeHints _ANSI_ARGS_((TkWindow *winPtr));
static void       UpdateVRootGeometry _ANSI_ARGS_((WmInfo *wmPtr));
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));

/*
 *--------------------------------------------------------------
 *
 * 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(
    TkWindow *winPtr)         /* Newly-created top-level window. */
{
    WmInfo *wmPtr;
      
    wmPtr = (WmInfo *) ckalloc(sizeof(WmInfo));
    wmPtr->winPtr = winPtr;
    wmPtr->reparent = None;
    wmPtr->titleUid = NULL;
    wmPtr->iconName = NULL;
    wmPtr->master = None;
    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;
    wmPtr->leaderName = NULL;
    wmPtr->masterWindowName = NULL;
    wmPtr->icon = NULL;
    wmPtr->iconFor = NULL;
    wmPtr->sizeHintsFlags = 0;
    wmPtr->minWidth = wmPtr->minHeight = 1;

    /*
     * Default the maximum dimensions to the size of the display, minus
     * a guess about how space is needed for window manager decorations.
     */

    wmPtr->maxWidth = DisplayWidth(winPtr->display, winPtr->screenNum) - 15;
    wmPtr->maxHeight = DisplayHeight(winPtr->display, winPtr->screenNum) - 30;
    wmPtr->gridWin = NULL;
    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->parentWidth = winPtr->changes.width
      + 2*winPtr->changes.border_width;
    wmPtr->parentHeight = winPtr->changes.height
      + 2*winPtr->changes.border_width;
    wmPtr->xInParent = 0;
    wmPtr->yInParent = 0;
    wmPtr->cmapList = NULL;
    wmPtr->cmapCount = 0;
    wmPtr->configWidth = -1;
    wmPtr->configHeight = -1;
    wmPtr->vRoot = None;
    wmPtr->protPtr = NULL;
    wmPtr->cmdArgv = NULL;
    wmPtr->clientMachine = NULL;
    wmPtr->flags = WM_NEVER_MAPPED;
    wmPtr->style = -1;
    wmPtr->macClass = kDocumentWindowClass;
    wmPtr->attributes = kWindowStandardDocumentAttributes;
    wmPtr->scrollWinPtr = NULL;
    winPtr->wmInfoPtr = wmPtr;

    UpdateVRootGeometry(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);
}

/*
 *--------------------------------------------------------------
 *
 * 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(
    TkWindow *winPtr)         /* Top-level window that's about to
                         * be mapped. */
{
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    Point where = {0, 0};
    int xOffset, yOffset;         
    int firstMap = false;
    MacDrawable *macWin;

    if (wmPtr->flags & WM_NEVER_MAPPED) {
      wmPtr->flags &= ~WM_NEVER_MAPPED;
      firstMap = true;

      /*
       * Create the underlying Mac window for this Tk window.
       */
      macWin = (MacDrawable *) winPtr->window;
      if (!TkMacOSXHostToplevelExists(winPtr)) {
          TkMacOSXMakeRealWindowExist(winPtr);
      }
      
      /*
       * Generate configure event when we first map the window.
       */
      LocalToGlobal(&where);
      TkMacOSXWindowOffset( GetWindowFromPort(TkMacOSXGetDrawablePort((Drawable) macWin)),
            &xOffset, &yOffset);
      where.h -= xOffset;
      where.v -= yOffset;
      TkGenWMConfigureEvent((Tk_Window) winPtr, 
            where.h, where.v, -1, -1, TK_LOCATION_CHANGED);
      
      /*
       * This is the first time this window has ever been mapped.
       * Store all the window-manager-related information for the
       * window.
       */

      if (wmPtr->titleUid == NULL) {
          wmPtr->titleUid = winPtr->nameUid;
      }
      
      if (!Tk_IsEmbedded(winPtr)) {
          TkSetWMName(winPtr, wmPtr->titleUid);
      }

      TkWmSetClass(winPtr);
    
      if (wmPtr->iconName != NULL) {
          XSetIconName(winPtr->display, winPtr->window, wmPtr->iconName);
      }
    
      wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    }
    if (wmPtr->hints.initial_state == WithdrawnState) {
      return;
    }
    
    /*
     * TODO: we need to display a window if it's iconic on creation.
     */

    if (wmPtr->hints.initial_state == IconicState) {
      return;
    }
    
    /*
     * Update geometry information.
     */
    wmPtr->flags |= WM_ABOUT_TO_MAP;
    if (wmPtr->flags & WM_UPDATE_PENDING) {
      Tk_CancelIdleCall(UpdateGeometryInfo, (ClientData) winPtr);
    }
    UpdateGeometryInfo((ClientData) winPtr);
    wmPtr->flags &= ~WM_ABOUT_TO_MAP;

    /*
     * Map the window.
     */

    XMapWindow(winPtr->display, winPtr->window);
    
    /*
     * Now that the window is visable we can determine the offset
     * from the window's content orgin to the window's decorative
     * orgin (structure orgin).
     */
    TkMacOSXWindowOffset( GetWindowFromPort(TkMacOSXGetDrawablePort(Tk_WindowId(winPtr))), 
      &wmPtr->xInParent, &wmPtr->yInParent);
}

/*
 *--------------------------------------------------------------
 *
 * TkWmUnmapWindow --
 *
 *    This procedure is invoked to unmap a top-level window.
 *    On the Macintosh all we do is call XUnmapWindow.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Unmaps the window.
 *
 *--------------------------------------------------------------
 */

void
TkWmUnmapWindow(
    TkWindow *winPtr)         /* Top-level window that's about to
                         * be mapped. */
{
    XUnmapWindow(winPtr->display, winPtr->window);
}

/*
 *--------------------------------------------------------------
 *
 * 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. */
{
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    WmInfo *wmPtr2;

    if (wmPtr == NULL) {
      return;
    }
    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->masterWindowName != NULL) {
      ckfree(wmPtr->masterWindowName);
    }
    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) {
      Tk_CancelIdleCall(UpdateGeometryInfo, (ClientData) winPtr);
    }
    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(
    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 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;

    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)) {
        if ((objc != 2) && (objc != 3)) {
            Tcl_WrongNumArgs(interp, 2, objv, "?boolean?");
            return TCL_ERROR;
        }
        if (objc == 2) {
            Tcl_SetResult(interp, ((wmTracing) ? "on" : "off"), TCL_STATIC);
            return TCL_OK;
        }
        return Tcl_GetBooleanFromObj(interp, objv[2], &wmTracing);
    }

    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;
    }
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    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. */
{
    char buf[TCL_INTEGER_SPACE];
    int i;
    WindowRef macWindow;

    if (objc < 3) {
configArgs:
        Tcl_AppendResult(interp, "wrong # arguments: must be \"",
                         Tcl_GetStringFromObj (objv[0], NULL), " attributes window",
                         " ?-modified ?bool??",
                         " ?-titlepath ?path??",
                         "\"", (char *) NULL);
        return TCL_ERROR;
    }
    macWindow = GetWindowFromPort(TkMacOSXGetDrawablePort(winPtr->window));
    if (objc == 3) {
        FSSpec spec;
        sprintf(buf, "%d", (IsWindowModified(macWindow) == true));
        Tcl_AppendResult(interp, "-modified ", buf, (char *) NULL);
        if (GetWindowProxyFSSpec(macWindow, &spec) == noErr) {
            Tcl_AppendResult(interp, " -titlepath", (char *) NULL);
            /* Need to get the path from the spec */
            Tcl_AppendElement(interp, "<read_unimplemented>");
        } else {
            Tcl_AppendResult(interp, " -titlepath {}", (char *) NULL);
        }
        return TCL_OK;
    }
    for (i = 3; i < objc; i += 2) {
        int length;
        char *argPtr = Tcl_GetStringFromObj(objv[i], &length);
        if ((length < 2) || (*argPtr != '-')) {
            goto configArgs;
        }
        if (strncmp(argPtr, "-modified", length) == 0) {
            int boolean;
            if (i < objc - 1) {
                if (Tcl_GetBooleanFromObj(interp, objv[i+1], &boolean) != TCL_OK) {
                    return TCL_ERROR;
                }
                SetWindowModified(macWindow, boolean);
            }
        } else if (strncmp(argPtr, "-titlepath", length) == 0) {
            if (i < objc - 1) {
                OSErr err;
                FSSpec spec;
                FSRef ref;
                Boolean isDirectory;
                err = FSPathMakeRef(Tcl_GetStringFromObj(objv[i+1], NULL), &ref, &isDirectory);
                if (err == noErr) {
                    err = FSGetCatalogInfo(&ref, kFSCatInfoNone, NULL, NULL,
                                           &spec, NULL);
                    if (err == noErr) {
                        if (SetWindowProxyFSSpec(macWindow,&spec) != noErr) {
                            Tcl_AppendResult(interp, "couldn't set window proxy title path",
                                             (char *) NULL);
                            return TCL_ERROR;
                        }
                    }
                }
            }
        } else {
            goto configArgs;
        }
        if (i == objc - 2) {
            /* Want to return last result */
            Tcl_SetObjResult(interp, objv[i+1]);
        }
    }
    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;
        }
        return TCL_OK;
    }
    if (wmPtr->clientMachine != NULL) {
        ckfree((char *) wmPtr->clientMachine);
    }
    wmPtr->clientMachine = (char *)
        ckalloc((unsigned) (length + 1));
    strcpy(wmPtr->clientMachine, argv3);
    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 = 0;
    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*)));
    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;

    /*
     * On the Macintosh all of this is just an excercise
     * in compatability as we don't support colormaps.  If
     * we did they would be installed here.
     */

    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;
        }
        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;
    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;
    }

    /*
     * TODO: may not want to call this function - look at Map events gened.
     */

    TkpWmSetState(winPtr, NormalState);
    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;
    Window window;
    char buf[TCL_INTEGER_SPACE];

    if (objc != 3) {
        Tcl_WrongNumArgs(interp, 2, objv, "window");
        return TCL_ERROR;
    }
    window = wmPtr->reparent;
    if (window == None) {
        window = Tk_WindowId((Tk_Window) winPtr);
    }
    sprintf(buf, "0x%x", (unsigned int) window);
    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);
    }
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    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;
    char *argv3;
    Pixmap pixmap;

    if ((objc != 3) && (objc != 4)) {
        Tcl_WrongNumArgs(interp, 2, objv, "window ?bitmap?");
        return TCL_ERROR;
    }
    if (objc == 3) {
        if (wmPtr->hints.flags & IconPixmapHint) {
            Tcl_SetResult(interp,
                          (char *) Tk_NameOfBitmap(winPtr->display, wmPtr->hints.icon_pixmap),
                          TCL_STATIC);
        }
        return TCL_OK;
    }
    argv3 = Tcl_GetString(objv[3]);
    if (*argv3 == '\0') {
        if (wmPtr->hints.icon_pixmap != None) {
            Tk_FreeBitmap(winPtr->display, wmPtr->hints.icon_pixmap);
            wmPtr->hints.icon_pixmap = None;
        }
        wmPtr->hints.flags &= ~IconPixmapHint;
    } else {
        OSErr err;
        FSSpec spec;
        FSRef ref;
        Boolean isDirectory;
        err = FSPathMakeRef(Tcl_GetStringFromObj(objv[3], NULL), &ref, &isDirectory);
        if (err == noErr) {
            err = FSGetCatalogInfo (&ref, kFSCatInfoNone, NULL, NULL, &spec, NULL);
            if (err == noErr) {
                WindowRef macWin
                        = GetWindowFromPort(TkMacOSXGetDrawablePort(winPtr->window));
                SetWindowProxyFSSpec(macWin, &spec);
                return TCL_OK;
            }
        }
        pixmap = Tk_GetBitmap(interp, (Tk_Window) winPtr,
                              Tk_GetUid(Tcl_GetStringFromObj(objv[3], NULL)));
        if (pixmap == None) {
            return TCL_ERROR;
        }
        wmPtr->hints.icon_pixmap = pixmap;
        wmPtr->hints.flags |= IconPixmapHint;
    }
    
    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->master != None) {
        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;
    CONST char *argv3;
    int length;

    if (objc > 4) {
        Tcl_WrongNumArgs(interp, 2, objv, "window ?newName?");
        return TCL_ERROR;
    }
    if (objc == 3) {
        Tcl_SetResult(interp,
                      (char *) ((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;

    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) {
            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;
        }
        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)) {
            /*
             * Don't have iconwindows on the Mac.  We just withdraw.
             */

            Tk_UnmapWindow(tkwin2);
        }
    }
    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];

        sprintf(buf, "%d %d", wmPtr->maxWidth, wmPtr->maxHeight);
        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;
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    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];

        sprintf(buf, "%d %d", wmPtr->minWidth, wmPtr->minHeight);
        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;
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    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;
    XSetWindowAttributes atts;

    if ((objc != 3) && (objc != 4)) {
        Tcl_WrongNumArgs(interp, 2, objv, "window ?boolean?");
        return TCL_ERROR;
    }
    if (objc == 3) {
        Tcl_SetBooleanObj(Tcl_GetObjResult(interp),
                          Tk_Attributes((Tk_Window) winPtr)->override_redirect);
        return TCL_OK;
    }
    if (Tcl_GetBooleanFromObj(interp, objv[3], &boolean) != TCL_OK) {
        return TCL_ERROR;
    }
    atts.override_redirect = (boolean) ? True : False;
    Tk_ChangeWindowAttributes((Tk_Window) winPtr, CWOverrideRedirect,
                              &atts);
    wmPtr->style = (boolean) ? plainDBox : documentProc;
    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;
        }
    }
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    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;
    }
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    if (wmPtr->scrollWinPtr != NULL) {
        TkScrollbarEventuallyRedraw(
                                    (TkScrollbar *) wmPtr->scrollWinPtr->instanceData);
    }
    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;
        }
    }
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    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) {
            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->master != 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) {
            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->titleUid != NULL) ? wmPtr->titleUid : winPtr->nameUid),
                      TCL_STATIC);
        return TCL_OK;
    } else {
        argv3 = Tcl_GetStringFromObj(objv[3], &length);
        wmPtr->titleUid = Tk_GetUid(argv3);
        if (!(wmPtr->flags & WM_NEVER_MAPPED) && !Tk_IsEmbedded(winPtr)) {
            TkSetWMName(winPtr, wmPtr->titleUid);
        }
    }
    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;
    Tk_Window master;
    WmInfo *wmPtr2;
    char *argv3;
    int length;

    if ((objc != 3) && (objc != 4)) {
        Tcl_WrongNumArgs(interp, 2, objv, "window ?master?");
        return TCL_ERROR;
    }
    if (objc == 3) {
        if (wmPtr->master != None) {
            Tcl_SetResult(interp, wmPtr->masterWindowName, TCL_STATIC);
        }
        return TCL_OK;
    }
    if (Tcl_GetString(objv[3])[0] == '\0') {
        wmPtr->master = None;
        if (wmPtr->masterWindowName != NULL) {
            ckfree(wmPtr->masterWindowName);
        }
        wmPtr->masterWindowName = NULL;
        wmPtr->style = documentProc;
    } else {
        if (TkGetWindowFromObj(interp, tkwin, objv[3], &master) != TCL_OK) {
            return TCL_ERROR;
        }
        Tk_MakeWindowExist(master);

        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 = ((TkWindow *) master)->wmInfoPtr;

        /* Under some circumstances, wmPtr2 is NULL here */
        if (wmPtr2 != NULL && 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;
        }

        argv3 = Tcl_GetStringFromObj(objv[3], &length);
        wmPtr->master = Tk_WindowId(master);
        wmPtr->masterWindowName = ckalloc((unsigned) length+1);
        strcpy(wmPtr->masterWindowName, argv3);
        wmPtr->style = plainDBox;
    }
    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;
    }
    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))) {
        Tk_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
        wmPtr->flags |= WM_UPDATE_PENDING;
    }
}
/*
 *----------------------------------------------------------------------
 *
 * 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(
    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, int heightInc)/* Pixel increments corresponding to a
                         * change of one grid unit. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    WmInfo *wmPtr;

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

    while (!(winPtr->flags & TK_TOP_LEVEL)) {
      winPtr = winPtr->parentPtr;
    }
    wmPtr = winPtr->wmInfoPtr;

    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;
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tk_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(
    Tk_Window tkwin)          /* Token for window that is currently
                         * controlling gridding. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    WmInfo *wmPtr;

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

    while (!(winPtr->flags & TK_TOP_LEVEL)) {
      winPtr = winPtr->parentPtr;
    }
    wmPtr = winPtr->wmInfoPtr;
    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;

    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tk_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 clientData,          /* Window for which event occurred. */
    XEvent *eventPtr)               /* Event that just happened. */
{
    TkWindow *winPtr = (TkWindow *) clientData;

    winPtr->wmInfoPtr->flags |= WM_VROOT_OFFSET_STALE;
    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);
      }
      if (wmTracing) {
          printf("TopLevelEventProc: %s deleted\n", winPtr->pathName);
      }
    } else if (eventPtr->type == ReparentNotify) {
      panic("recieved unwanted reparent event");
    }
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    ClientData dummy,               /* Not used. */
    Tk_Window tkwin)                /* Information about window. */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    WmInfo *wmPtr;

    wmPtr = winPtr->wmInfoPtr;
    wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tk_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 window manager 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)          /* Pointer to the window's record. */
{
    TkWindow *winPtr = (TkWindow *) clientData;
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    int x, y, width, height;
    unsigned long serial;

    wmPtr->flags &= ~WM_UPDATE_PENDING;

    /*
     * 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 = wmPtr->vRootWidth - wmPtr->x
          - (width + (wmPtr->parentWidth - winPtr->changes.width));
    } else {
      x =  wmPtr->x;
    }
    if (wmPtr->flags & WM_NEGATIVE_Y) {
      y = wmPtr->vRootHeight - wmPtr->y
          - (height + (wmPtr->parentHeight - winPtr->changes.height));
    } else {
      y =  wmPtr->y;
    }

    /*
     * If the window's size is going to change and the window is
     * supposed to not be resizable by the user, then we have to
     * update the size hints.  There may also be a size-hint-update
     * request pending from somewhere else, too.
     */

    if (((width != winPtr->changes.width)
          || (height != winPtr->changes.height))
          && (wmPtr->gridWin == NULL)
          && ((wmPtr->sizeHintsFlags & (PMinSize|PMaxSize)) == 0)) {
      wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    }
    if (wmPtr->flags & WM_UPDATE_SIZE_HINTS) {
      UpdateSizeHints(winPtr);
    }

    /*
     * Reconfigure the window if it isn't already configured correctly.
     * A few tricky points:
     *
     * 1. If the window is embedded and the container is also in this
     *    process, don't actually reconfigure the window; just pass the
     *    desired size on to the container.  Also, zero out any position
     *    information, since embedded windows are not allowed to move.
     * 2. Sometimes the window manager will give us a different size
     *    than we asked for (e.g. mwm has a minimum size for windows), so
     *    base the size check on what we *asked for* last time, not what we
     *    got.
     * 3. Don't move window unless a new position has been requested for
     *        it.  This is because of "features" in some window managers (e.g.
     *    twm, as of 4/24/91) where they don't interpret coordinates
     *    according to ICCCM.  Moving a window to its current location may
     *    cause it to shift position on the screen.
     */

    if (Tk_IsEmbedded(winPtr)) {
        TkWindow *contWinPtr;

      contWinPtr = TkpGetOtherWindow(winPtr);
      
      /*
       * NOTE: Here we should handle out of process embedding.
       */

      if (contWinPtr != NULL) {         
          /*
           * This window is embedded and the container is also in this
           * process, so 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.
           */

          wmPtr->x = wmPtr->y = 0;
          wmPtr->flags &= ~(WM_NEGATIVE_X|WM_NEGATIVE_Y);
          Tk_GeometryRequest((Tk_Window) contWinPtr, width, height);
        }
      return;
    }
    serial = NextRequest(winPtr->display);
    if (wmPtr->flags & WM_MOVE_PENDING) {
      wmPtr->configWidth = width;
      wmPtr->configHeight = height;
      if (wmTracing) {
          printf(
            "UpdateGeometryInfo moving to %d %d, resizing to %d x %d,\n",
                x, y, width, height);
      }
      Tk_MoveResizeWindow((Tk_Window) winPtr, x, y, (unsigned) width,
            (unsigned) height);
    } else if ((width != wmPtr->configWidth)
          || (height != wmPtr->configHeight)) {
      wmPtr->configWidth = width;
      wmPtr->configHeight = height;
      if (wmTracing) {
          printf("UpdateGeometryInfo resizing to %d x %d\n", width, height);
      }
      Tk_ResizeWindow((Tk_Window) winPtr, (unsigned) width,
            (unsigned) height);
    } else {
      return;
    }
}

/*
 *--------------------------------------------------------------
 *
 * UpdateSizeHints --
 *
 *    This procedure is called to update the window manager's
 *    size hints information from the information in a WmInfo
 *    structure.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Properties get changed for winPtr.
 *
 *--------------------------------------------------------------
 */

static void
UpdateSizeHints(
    TkWindow *winPtr)
{
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    XSizeHints *hintsPtr;

    wmPtr->flags &= ~WM_UPDATE_SIZE_HINTS;

    hintsPtr = XAllocSizeHints();
    if (hintsPtr == NULL) {
      return;
    }

    /*
     * Compute the pixel-based sizes for the various fields in the
     * size hints structure, based on the grid-based sizes in
     * our structure.
     */

    if (wmPtr->gridWin != NULL) {
      hintsPtr->base_width = winPtr->reqWidth
            - (wmPtr->reqGridWidth * wmPtr->widthInc);
      if (hintsPtr->base_width < 0) {
          hintsPtr->base_width = 0;
      }
      hintsPtr->base_height = winPtr->reqHeight
            - (wmPtr->reqGridHeight * wmPtr->heightInc);
      if (hintsPtr->base_height < 0) {
          hintsPtr->base_height = 0;
      }
      hintsPtr->min_width = hintsPtr->base_width
            + (wmPtr->minWidth * wmPtr->widthInc);
      hintsPtr->min_height = hintsPtr->base_height
            + (wmPtr->minHeight * wmPtr->heightInc);
      hintsPtr->max_width = hintsPtr->base_width
            + (wmPtr->maxWidth * wmPtr->widthInc);
      hintsPtr->max_height = hintsPtr->base_height
            + (wmPtr->maxHeight * wmPtr->heightInc);
    } else {
      hintsPtr->min_width = wmPtr->minWidth;
      hintsPtr->min_height = wmPtr->minHeight;
      hintsPtr->max_width = wmPtr->maxWidth;
      hintsPtr->max_height = wmPtr->maxHeight;
      hintsPtr->base_width = 0;
      hintsPtr->base_height = 0;
    }
    hintsPtr->width_inc = wmPtr->widthInc;
    hintsPtr->height_inc = wmPtr->heightInc;
    hintsPtr->min_aspect.x = wmPtr->minAspect.x;
    hintsPtr->min_aspect.y = wmPtr->minAspect.y;
    hintsPtr->max_aspect.x = wmPtr->maxAspect.x;
    hintsPtr->max_aspect.y = wmPtr->maxAspect.y;
    hintsPtr->win_gravity = wmPtr->gravity;
    hintsPtr->flags = wmPtr->sizeHintsFlags | PMinSize | PMaxSize;

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

    if (wmPtr->flags & WM_WIDTH_NOT_RESIZABLE) {
      if (wmPtr->width >= 0) {
          hintsPtr->min_width = wmPtr->width;
      } else {
          hintsPtr->min_width = winPtr->reqWidth;
      }
      hintsPtr->max_width = hintsPtr->min_width;
    }
    if (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE) {
      if (wmPtr->height >= 0) {
          hintsPtr->min_height = wmPtr->height;
      } else {
          hintsPtr->min_height = winPtr->reqHeight;
      }
      hintsPtr->max_height = hintsPtr->min_height;
    }

    XSetWMNormalHints(winPtr->display, winPtr->window, hintsPtr);

    XFree((char *) hintsPtr);
}

/*
 *--------------------------------------------------------------
 *
 * 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(
    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. */
{
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    int x, y, width, height, flags;
    char *end;
    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;
      }
      x = strtol(p+1, &end, 10);
      p = end;
      if (*p == '-') {
          flags |= WM_NEGATIVE_Y;
      } else if (*p != '+') {
          goto error;
      }
      y = strtol(p+1, &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;
          flags |= WM_UPDATE_SIZE_HINTS;
      }
    }

    /*
     * 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;
    if ((x != wmPtr->x) || (y != wmPtr->y)
          || ((flags & (WM_NEGATIVE_X|WM_NEGATIVE_Y))
                != (wmPtr->flags & (WM_NEGATIVE_X|WM_NEGATIVE_Y)))) {
      wmPtr->x = x;
      wmPtr->y = y;
      flags |= WM_MOVE_PENDING;
    }
    wmPtr->flags = flags;

    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
      Tk_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.  If a virtual
 *    root window is in effect for the window, then the coordinates
 *    in the virtual root are returned.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

void
Tk_GetRootCoords(
    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). */
{
    int x, y;
    TkWindow *winPtr = (TkWindow *) tkwin;

    /*
     * Search back through this window's parents all the way to a
     * top-level window, combining the offsets of each window within
     * its parent.
     */

    x = y = 0;
    while (1) {
      x += winPtr->changes.x + winPtr->changes.border_width;
      y += winPtr->changes.y + winPtr->changes.border_width;
      if (winPtr->flags & TK_TOP_LEVEL) {
          if (!(Tk_IsEmbedded(winPtr))) {
            x += winPtr->wmInfoPtr->xInParent;
            y += winPtr->wmInfoPtr->yInParent;
            break;            
          } else {
              TkWindow *otherPtr;
            
            otherPtr = TkpGetOtherWindow(winPtr);
            if (otherPtr != NULL) {
                /*
                 * The container window is in the same application.
                 * Query its coordinates.
                 */
                winPtr = otherPtr;
                
                /*
                 * Remember to offset by the container window here,
                 * since at the end of this if branch, we will
                 * pop out to the container's parent...
                 */
                 
                  x += winPtr->changes.x + winPtr->changes.border_width;
                  y += winPtr->changes.y + winPtr->changes.border_width;
                
            } else {
                Point theOffset;
                
                if (gMacEmbedHandler->getOffsetProc != NULL) {
                    /*
                     * We do not require that the changes.x & changes.y for 
                     * a non-Tk master window be kept up to date.  So we
                     * first subtract off the possibly bogus values that have
                     * been added on at the top of this pass through the loop,
                     * and then call out to the getOffsetProc to give us
                     * the correct offset.
                     */
                     
                      x -= winPtr->changes.x + winPtr->changes.border_width;
                      y -= winPtr->changes.y + winPtr->changes.border_width;
                      
                    gMacEmbedHandler->getOffsetProc((Tk_Window) winPtr, &theOffset);
                    
                    x += theOffset.h;
                    y += theOffset.v;
                }
                break;
            }
          }
      }
      winPtr = winPtr->parentPtr;
    }
    *xPtr = x;
    *yPtr = y;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_CoordsToWindow --
 *
 *    This is a Macintosh specific implementation of this function.
 *    Given the 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(
    int rootX, int 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. */
{
    WindowPtr whichWin;
    Point where;
    Window rootChild;
    TkWindow *winPtr, *childPtr;
    TkWindow *nextPtr;        /* Coordinates of highest child found so
                         * far that contains point. */
    int x, y;                 /* Coordinates in winPtr. */
    int tmpx, tmpy, bd;
    TkDisplay *dispPtr;

    /*
     * Step 1: find the top-level window that contains the desired point.
     */
     
    where.h = rootX;
    where.v = rootY;
    FindWindow(where, &whichWin);
    if (whichWin == NULL) {
      return NULL;
    }
    rootChild = TkMacOSXGetXWindow(whichWin);
    dispPtr = TkGetDisplayList();
    winPtr = (TkWindow *) Tk_IdToWindow(dispPtr->display, rootChild);
    if (winPtr == NULL) {
        return NULL;
    }

    /*
     * Step 2: work down through the hierarchy underneath this window.
     * At each level, scan through all the children to find the highest
     * one in the stacking order that contains the point.  Then repeat
     * the whole process on that child.
     */

    x = rootX - winPtr->wmInfoPtr->xInParent;
    y = rootY - winPtr->wmInfoPtr->yInParent;
    while (1) {
      x -= winPtr->changes.x;
      y -= winPtr->changes.y;
      nextPtr = NULL;
      
      /*
       * Container windows cannot have children.  So if it is a container,
       * look there, otherwise inspect the children.
       */
       
      if (Tk_IsContainer(winPtr)) {
          childPtr = TkpGetOtherWindow(winPtr);
          if (childPtr != NULL) {
            if (Tk_IsMapped(childPtr)) {
                  tmpx = x - childPtr->changes.x;
                  tmpy = y - childPtr->changes.y;
                  bd = childPtr->changes.border_width;
                      
                  if ((tmpx >= -bd) && (tmpy >= -bd)
                    && (tmpx < (childPtr->changes.width + bd))
                    && (tmpy < (childPtr->changes.height + bd))) {
                    nextPtr = childPtr;
                  }
            }
          }
          

          /*
           * NOTE: Here we should handle out of process embedding.
           */
      
      } else {
          for (childPtr = winPtr->childList; childPtr != NULL;
                childPtr = childPtr->nextPtr) {
              if (!Tk_IsMapped(childPtr) ||
                  (childPtr->flags & TK_TOP_LEVEL)) {
                continue;
              }
              tmpx = x - childPtr->changes.x;
              tmpy = y - childPtr->changes.y;
              bd = childPtr->changes.border_width;
              if ((tmpx >= -bd) && (tmpy >= -bd)
                    && (tmpx < (childPtr->changes.width + bd))
                    && (tmpy < (childPtr->changes.height + bd))) {
                nextPtr = childPtr;
              }
          }
      }
      if (nextPtr == NULL) {
          break;
      }
      winPtr = nextPtr;
    }
    return (Tk_Window) winPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_TopCoordsToWindow --
 *
 *    Given a Tk Window, and coordinates of a point relative to that window
 *      this procedure returns the top-most child of the window (excluding
 *      toplevels) covering that point, if there exists such a window in this
 *    application.
 *    It also sets newX, and newY to the coords of the point relative to the
 *      window returned.
 *
 * 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.  newX and newY are also set to the coords of the point relative
 *      to the returned window.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

Tk_Window
Tk_TopCoordsToWindow(
    Tk_Window tkwin,          /* Token for a Tk Window which defines the;
                         * coordinates for rootX & rootY */
    int rootX, int rootY,     /* Coordinates of a point in tkWin. */
    int *newX, int *newY)     /* Coordinates of point in the upperMost child of
                                 * tkWin containing (rootX,rootY) */
{
    TkWindow *winPtr, *childPtr;
    TkWindow *nextPtr;        /* Coordinates of highest child found so
                         * far that contains point. */
    int x, y;                 /* Coordinates in winPtr. */
    Window *children;         /* Children of winPtr, or NULL. */

    winPtr = (TkWindow *) tkwin;
    x = rootX;
    y = rootY;
    while (1) {
      nextPtr = NULL;
      children = NULL;

      /*
       * Container windows cannot have children.  So if it is a container,
       * look there, otherwise inspect the children.
       */
       
      if (Tk_IsContainer(winPtr)) {
          childPtr = TkpGetOtherWindow(winPtr);
          if (childPtr != NULL) {
            if (Tk_IsMapped(childPtr) && 
                     (x > childPtr->changes.x && 
                         x < childPtr->changes.x +
                         childPtr->changes.width) &&
                     (y > childPtr->changes.y &&
                         y < childPtr->changes.y +
                         childPtr->changes.height)) {     
                nextPtr = childPtr;
            }
          }

          /*
           * NOTE: Here we should handle out of process embedding.
           */
      
      } else {
      
          for (childPtr = winPtr->childList; childPtr != NULL;
                                 childPtr = childPtr->nextPtr) {
              if (!Tk_IsMapped(childPtr) ||
                  (childPtr->flags & TK_TOP_LEVEL)) {
                continue;
              }
              if (x < childPtr->changes.x || y < childPtr->changes.y) {
                continue;
              }
              if (x > childPtr->changes.x + childPtr->changes.width ||
                    y > childPtr->changes.y + childPtr->changes.height) {
                continue;
              }
              nextPtr = childPtr;
          }
      }
      if (nextPtr == NULL) {
          break;
      }
      winPtr = nextPtr;
      x -= winPtr->changes.x;
      y -= winPtr->changes.y;
    }
    *newX = x;
    *newY = y;
    return (Tk_Window) winPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * UpdateVRootGeometry --
 *
 *    This procedure is called to update all the virtual root
 *    geometry information in wmPtr.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The vRootX, vRootY, vRootWidth, and vRootHeight fields in
 *    wmPtr are filled with the most up-to-date information.
 *
 *----------------------------------------------------------------------
 */

static void
UpdateVRootGeometry(
    WmInfo *wmPtr)            /* Window manager information to be
                         * updated.  The wmPtr->vRoot field must
                         * be valid. */
{
    TkWindow *winPtr = wmPtr->winPtr;
    unsigned int bd, dummy;
    Window dummy2;
    Status status;
    Tk_ErrorHandler handler;

    /*
     * If this isn't a virtual-root window manager, just return information
     * about the screen.
     */

    wmPtr->flags &= ~WM_VROOT_OFFSET_STALE;
    if (wmPtr->vRoot == None) {
      noVRoot:
      wmPtr->vRootX = wmPtr->vRootY = 0;
      wmPtr->vRootWidth = DisplayWidth(winPtr->display, winPtr->screenNum);
      wmPtr->vRootHeight = DisplayHeight(winPtr->display, winPtr->screenNum);
      return;
    }

    /*
     * Refresh the virtual root information if it's out of date.
     */

    handler = Tk_CreateErrorHandler(winPtr->display, -1, -1, -1,
          (Tk_ErrorProc *) NULL, (ClientData) NULL);
    status = XGetGeometry(winPtr->display, wmPtr->vRoot,
          &dummy2, &wmPtr->vRootX, &wmPtr->vRootY,
          &wmPtr->vRootWidth, &wmPtr->vRootHeight, &bd, &dummy);
    if (wmTracing) {
      printf("UpdateVRootGeometry: x = %d, y = %d, width = %d, ",
            wmPtr->vRootX, wmPtr->vRootY, wmPtr->vRootWidth);
      printf("height = %d, status = %d\n", wmPtr->vRootHeight, status);
    }
    Tk_DeleteErrorHandler(handler);
    if (status == 0) {
      /*
       * The virtual root is gone!  Pretend that it never existed.
       */

      wmPtr->vRoot = None;
      goto noVRoot;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    Tk_Window tkwin,          /* Window whose virtual root is to be
                         * queried. */
    int *xPtr, int *yPtr,     /* Store x and y offsets of virtual root
                         * here. */
    int *widthPtr,            /* Store dimensions of virtual root here. */
    int *heightPtr)
{
    WmInfo *wmPtr;
    TkWindow *winPtr = (TkWindow *) tkwin;

    /*
     * Find the top-level window for tkwin, and locate the window manager
     * information for that window.
     */

    while (!(winPtr->flags & TK_TOP_LEVEL)) {
      winPtr = winPtr->parentPtr;
    }
    wmPtr = winPtr->wmInfoPtr;

    /*
     * Make sure that the geometry information is up-to-date, then copy
     * it out to the caller.
     */

    if (wmPtr->flags & WM_VROOT_OFFSET_STALE) {
      UpdateVRootGeometry(wmPtr);
    }
    *xPtr = wmPtr->vRootX;
    *yPtr = wmPtr->vRootY;
    *widthPtr = wmPtr->vRootWidth;
    *heightPtr = wmPtr->vRootHeight;
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    Tk_Window tkwin,          /* Window to move. */
    int x, int y)       /* New location for window (within
                         * parent). */
{
    TkWindow *winPtr = (TkWindow *) tkwin;
    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;
      wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
    }

    /*
     * 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) {
          Tk_CancelIdleCall(UpdateGeometryInfo, (ClientData) winPtr);
      }
      UpdateGeometryInfo((ClientData) winPtr);
    }
}
/*
 *----------------------------------------------------------------------
 *
 * 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(
    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. */
{
    WmInfo *wmPtr;
        
    WindowRef macWindow, otherMacWindow, frontWindow, tmpWindow;

    wmPtr = winPtr->wmInfoPtr;
    
    /*
     * Get the mac window.  Make sure it exists & is mapped.
     */
    
    if (winPtr->window == None) {
      Tk_MakeWindowExist((Tk_Window) winPtr);
    }
    if (winPtr->wmInfoPtr->flags & WM_NEVER_MAPPED) {

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

      TkWmMapWindow(winPtr);
    }
    macWindow = GetWindowFromPort(TkMacOSXGetDrawablePort(winPtr->window));
    
    /*
     * Get the window in which a raise or lower is in relation to.
     */
    if (otherPtr != NULL) {
      if (otherPtr->window == None) {
          Tk_MakeWindowExist((Tk_Window) otherPtr);
      }
      if (otherPtr->wmInfoPtr->flags & WM_NEVER_MAPPED) {
          TkWmMapWindow(otherPtr);
      }
      otherMacWindow =GetWindowFromPort(TkMacOSXGetDrawablePort(otherPtr->window));
    } else {
      otherMacWindow = NULL;
    }
      

    frontWindow = FrontNonFloatingWindow();
       
    if (aboveBelow == Above) {
      if (macWindow == frontWindow) {
          /* 
           * Do nothing - it's already at the top.
           */
      } else if (otherMacWindow == frontWindow || otherMacWindow == NULL) {
          /*
           * Raise the window to the top.  If the window is visable then
           * we also make it the active window.
           */

          if (wmPtr->hints.initial_state == WithdrawnState) {
            BringToFront(macWindow);
          } else {
            SelectWindow(macWindow);
          }
      } else {
          /*
           * Find the window to be above.  (Front window will actually be the
           * window to be behind.)  Front window is NULL if no other windows.
           */
          while (frontWindow != NULL &&
                ( tmpWindow = GetNextWindow (frontWindow) ) != otherMacWindow) {
            frontWindow = tmpWindow;
          }
          if (frontWindow != NULL) {
            SendBehind(macWindow, frontWindow);
          }
      }
    } else {
      /*
       * Send behind.  If it was in front find another window to make active.
       */
      if (macWindow == frontWindow) {
          if ( ( tmpWindow = GetNextWindow ( macWindow )) != NULL) {
            SelectWindow(tmpWindow);
          }
      }
      SendBehind(macWindow, otherMacWindow);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    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_LEVEL) {
          break;
      }
    }
    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;

    /*
     * On the Macintosh all of this is just an excercise
     * in compatability as we don't support colormaps.  If 
     * we did they would be installed here.
     */
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    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;
    }

    /*
     * 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;
      }
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkGetPointerCoords --
 *
 *    Fetch the position of the mouse pointer.
 *
 * Results:
 *    *xPtr and *yPtr are filled in with the (virtual) root coordinates
 *    of the mouse pointer for tkwin's display.  If the pointer isn't
 *    on tkwin's screen, then -1 values are returned for both
 *    coordinates.  The argument tkwin must be a toplevel window.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

void
TkGetPointerCoords(
    Tk_Window tkwin,          /* Toplevel window that identifies screen
                         * on which lookup is to be done. */
    int *xPtr, int *yPtr)     /* Store pointer coordinates here. */
{
    Point where;

    GetMouse(&where);
    LocalToGlobal(&where);
    *xPtr = where.h;
    *yPtr = where.v;
}

/*
 *----------------------------------------------------------------------
 *
 * InitialWindowBounds --
 *
 *    This function calculates the initial bounds for a new Mac
 *    toplevel window.  Unless the geometry is specified by the user
 *    this code will auto place the windows in a cascade diagonially
 *    across the main monitor of the Mac.
 *
 * Results:
 *    The bounds are returned in geometry.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

static void
InitialWindowBounds(
    TkWindow *winPtr,         /* Window to get initial bounds for. */
    Rect *geometry)           /* On return the initial bounds. */
{
    int x, y;
    static int defaultX = 5;
    static int defaultY = 45;
      
    if (!(winPtr->wmInfoPtr->sizeHintsFlags & (USPosition | PPosition))) {
      /* 
       * We will override the program & hopefully place the
       * window in a "better" location.
       */
        BitMap screenBits;
        GetQDGlobalsScreenBits(&screenBits);
      if (((screenBits.bounds.right - defaultX) < 30) ||
            ((screenBits.bounds.bottom - defaultY) < 30)) {
          defaultX = 5;
          defaultY = 45;
      }
      x = defaultX;
      y = defaultY;
      defaultX += 20;
      defaultY += 20;
    } else {
      x = winPtr->wmInfoPtr->x;
      y = winPtr->wmInfoPtr->y;
    }
      
    geometry->left = x;
    geometry->top = y;
    geometry->right = x + winPtr->changes.width;
    geometry->bottom = y + winPtr->changes.height;
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXResizable --
 *
 *    This function determines if the passed in window is part of
 *    a toplevel window that is resizable.  If the window is 
 *    resizable in the x, y or both directions, true is returned.
 *
 * Results:
 *    True if resizable, false otherwise.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

int
TkMacOSXResizable(
    TkWindow *winPtr)         /* Tk window or NULL. */
{
    WmInfo *wmPtr;

    if (winPtr == NULL) {
      return false;
    }
    while (winPtr->wmInfoPtr == NULL) {
      winPtr = winPtr->parentPtr;
    }
    
    wmPtr = winPtr->wmInfoPtr;
    if ((wmPtr->flags & WM_WIDTH_NOT_RESIZABLE) &&
          (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE)) {
      return false;
    } else {
      return true;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXGrowToplevel --
 *
 *    The function is invoked when the user clicks in the grow region
 *    of a Tk window.  The function will handle the dragging
 *    procedure and not return until completed.  Finally, the function
 *    may place information Tk's event queue is the window was resized.
 *
 * Results:
 *    True if events were placed on event queue, false otherwise.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

int
TkMacOSXGrowToplevel(
    WindowRef whichWindow,
    Point start)
{
    Point where = start;
    TkDisplay *dispPtr;
    Rect       portRect;

    GlobalToLocal(&where);
    GetPortBounds(GetWindowPort(whichWindow), &portRect );
    if (where.h > (portRect.right - 16) &&
          where.v > (portRect.bottom - 16)) {
            
      Window window;
      TkWindow *winPtr;
      WmInfo *wmPtr;
      Rect bounds;
      long growResult;

      window = TkMacOSXGetXWindow(whichWindow);
      dispPtr = TkGetDisplayList();
      winPtr = (TkWindow *) Tk_IdToWindow(dispPtr->display, window);
      wmPtr = winPtr->wmInfoPtr;
      
      /* TODO: handle grid size options. */
      if ((wmPtr->flags & WM_WIDTH_NOT_RESIZABLE) &&
            (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE)) {
          return false;
      }
      if (wmPtr->flags & WM_WIDTH_NOT_RESIZABLE) {
          bounds.left = bounds.right = winPtr->changes.width;
      } else {
          bounds.left = (wmPtr->minWidth < 64) ? 64 : wmPtr->minWidth;
          bounds.right = (wmPtr->maxWidth < 64) ? 64 : wmPtr->maxWidth;
      }
      if (wmPtr->flags & WM_HEIGHT_NOT_RESIZABLE) {
          bounds.top = bounds.bottom = winPtr->changes.height;
      } else {
          bounds.top = (wmPtr->minHeight < 64) ? 64 : wmPtr->minHeight;
          bounds.bottom = (wmPtr->maxHeight < 64) ? 64 : wmPtr->maxHeight;
      }
      
      growResult = GrowWindow(whichWindow, start, &bounds);

      if (growResult != 0) {
          SizeWindow(whichWindow,
                LoWord(growResult), HiWord(growResult), true);
          SetPort( GetWindowPort(whichWindow));
          InvalWindowRect(whichWindow,&portRect);     /* TODO: may not be needed */
          TkMacOSXInvalClipRgns(winPtr);
          TkGenWMConfigureEvent((Tk_Window) winPtr, -1, -1, 
                (int) LoWord(growResult), (int) HiWord(growResult),
                TK_SIZE_CHANGED);
          return true;
      }
      return false;
    }
    return false;
}

/*
 *----------------------------------------------------------------------
 *
 * TkSetWMName --
 *
 *    Set the title for a toplevel window.  If the window is embedded, 
 *    do not change the window title.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    The title of the window is changed.
 *
 *----------------------------------------------------------------------
 */

void
TkSetWMName(
    TkWindow *winPtr,
    Tk_Uid titleUid)
{
    CFStringRef  title;
    WindowRef macWin;
    
    if (Tk_IsEmbedded(winPtr)) {
        return;
    }
    
    if (strlen(titleUid) > 0) {
        title = CFStringCreateWithBytes(NULL, titleUid, strlen(titleUid), 
                kCFStringEncodingUTF8, false); 
    } else {
      title = NULL;
    }
    
    macWin = GetWindowFromPort(TkMacOSXGetDrawablePort(winPtr->window));

    SetWindowTitleWithCFString(macWin, title);
    
    if (title != NULL) {
        CFRelease(title);
    }
}


/*
 *----------------------------------------------------------------------
 *
 * TkGetTransientMaster --
 *
 *    If the passed window has the TRANSIENT_FOR property set this
 *    will return the master window.  Otherwise it will return None.
 *
 * Results:
 *      The master window or None.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

Window
TkGetTransientMaster(
    TkWindow *winPtr)
{
    if (winPtr->wmInfoPtr != NULL) {
      return winPtr->wmInfoPtr->master;
    }
    return None;
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXGetXWindow --
 *
 *    Returns the X window Id associated with the given WindowRef.
 *
 * Results:
 *    The window id is returned.  None is returned if not a Tk window.
 *
 * Side effects:
 *    None.
 *
 *----------------------------------------------------------------------
 */

Window
TkMacOSXGetXWindow(
    WindowRef macWinPtr)
{
    Tcl_HashEntry *hPtr;

    if ((macWinPtr == NULL) || !windowHashInit) {
      return None;
    }
    hPtr = Tcl_FindHashEntry(&windowTable, (char *) macWinPtr);
    if (hPtr == NULL) {
      return None;
    }
    return (Window) Tcl_GetHashValue(hPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXZoomToplevel --
 *
 *    The function is invoked when the user clicks in the zoom region
 *    of a Tk window.  The function will handle the mouse tracking
 *    for the interaction.  If the window is to be zoomed the window
 *    size is changed and events are generated to let Tk know what
 *    happened.
 *
 * Results:
 *    True if events were placed on event queue, false otherwise.
 *
 * Side effects:
 *    The window may be resized & events placed on Tk's queue.
 *
 *----------------------------------------------------------------------
 */

int
TkMacOSXZoomToplevel(
    WindowRef whichWindow,    /* The Macintosh window to zoom. */
    Point where,        /* The current mouse position. */
    short zoomPart)           /* Either inZoomIn or inZoomOut */
{
    Window window;
    Tk_Window tkwin;
    Point location = {0, 0};
    int xOffset, yOffset;
    WmInfo *wmPtr;
    TkDisplay *dispPtr;
    Rect       portRect;

    SetPort( GetWindowPort(whichWindow));
    if (!TrackBox(whichWindow, where, zoomPart)) {
      return false;
    }

    /*
     * We should now zoom the window (as long as it's one of ours).  We 
     * also need to generate an event to let Tk know that the window size 
     * has changed.
     */
    window = TkMacOSXGetXWindow(whichWindow);
    dispPtr = TkGetDisplayList();
    tkwin = Tk_IdToWindow(dispPtr->display, window);
    if (tkwin == NULL) {
      return false;
    }

    /*
     * The following block of code works around a bug in the window
     * definition for Apple's floating windows.  The zoom behavior is
     * broken - we must manually set the standard state (by default
     * it's something like 1x1) and we must swap the zoomPart manually
     * otherwise we always get the same zoomPart and nothing happens.
     */
    wmPtr = ((TkWindow *) tkwin)->wmInfoPtr;
    if (wmPtr->style >= floatProc && wmPtr->style <= floatSideZoomGrowProc) {
      if (zoomPart == inZoomIn) {
            BitMap screenBits;
            Rect   zoomRect;
            GetQDGlobalsScreenBits(&screenBits);
          zoomRect = screenBits.bounds;
          InsetRect(&zoomRect, 60, 60);
          SetWindowStandardState(whichWindow, &zoomRect);
          zoomPart = inZoomOut;
      } else {
          zoomPart = inZoomIn;
      }
    } else {
        zoomPart = inZoomIn;
    }
    
    ZoomWindow(whichWindow, zoomPart, false);
    InvalWindowRect(whichWindow,&portRect);
    TkMacOSXInvalClipRgns((TkWindow *) tkwin);

    LocalToGlobal(&location);
    TkMacOSXWindowOffset(whichWindow, &xOffset, &yOffset);
    location.h -= xOffset;
    location.v -= yOffset;
    GetPortBounds ( GetWindowPort(whichWindow), &portRect );
    TkGenWMConfigureEvent(tkwin, location.h, location.v, 
          portRect.right - portRect.left,
          portRect.bottom - portRect.top,
          TK_BOTH_CHANGED);
    return true;
}

/*
 *----------------------------------------------------------------------
 *
 * TkUnsupported1Cmd --
 *
 *    This procedure is invoked to process the 
 *      "::tk::unsupported::MacWindowStyle" Tcl command.
 *    This command allows you to set the style of decoration
 *    for a Macintosh window.
 *
 * Results:
 *    A standard Tcl result.
 *
 * Side effects:
 *    Changes the style of a new Mac window.
 *
 *----------------------------------------------------------------------
 */

      /* ARGSUSED */
int
TkUnsupported1Cmd(
    ClientData clientData,    /* Main window associated with
                         * interpreter. */
    Tcl_Interp *interp,       /* Current interpreter. */
    int argc,                 /* Number of arguments. */
    CONST char **argv)        /* Argument strings. */
{
    Tk_Window tkwin = (Tk_Window) clientData;
    TkWindow *winPtr;
    WmInfo *wmPtr;
    int c;
    size_t length;

    if (argc < 3) {
      Tcl_AppendResult(interp, "wrong # args: should be \"",
            argv[0], " option window ?arg ...?\"", (char *) NULL);
      return TCL_ERROR;
    }

    winPtr = (TkWindow *) Tk_NameToWindow(interp, argv[2], tkwin);
    if (winPtr == NULL) {
      return TCL_ERROR;
    }
    if (!(winPtr->flags & TK_TOP_LEVEL)) {
      Tcl_AppendResult(interp, "window \"", winPtr->pathName,
            "\" isn't a top-level window", (char *) NULL);
      return TCL_ERROR;
    }
    wmPtr = winPtr->wmInfoPtr;
    c = argv[1][0];
    length = strlen(argv[1]);
    if ((c == 's')  && (strncmp(argv[1], "style", length) == 0)) {
        if ((argc < 3) || (argc > 5)) {
            Tcl_AppendResult(interp, "wrong # arguments: must be \"",
                    argv[0], " style window ?windowStyle?\"",
                    " or \"", argv[0], "style window ?class attributes?\"",
                    (char *) NULL);
            return TCL_ERROR;
        }
      
      if (argc == 3) {
          int appearanceSpec = 0;
          
          switch (wmPtr->style) {
              case -1:
                  appearanceSpec = 1;
                  break;
            case noGrowDocProc:
            case documentProc:
                Tcl_SetResult(interp, "documentProc", TCL_STATIC);
                break;
            case dBoxProc:
                Tcl_SetResult(interp, "dBoxProc", TCL_STATIC);
                break;
            case plainDBox:
                Tcl_SetResult(interp, "plainDBox", TCL_STATIC);
                break;
            case altDBoxProc:
                Tcl_SetResult(interp, "altDBoxProc", TCL_STATIC);
                break;
            case movableDBoxProc:
                Tcl_SetResult(interp, "movableDBoxProc", TCL_STATIC);
                break;
            case zoomDocProc:
            case zoomNoGrow:
                Tcl_SetResult(interp, "zoomDocProc", TCL_STATIC);
                break;
                    /* Not supported in Carbon
            case rDocProc:
                Tcl_SetResult(interp, "rDocProc", TCL_STATIC);
                break;
                    */
            case floatProc:
            case floatGrowProc:
                Tcl_SetResult(interp, "floatProc", TCL_STATIC);
                break;
            case floatZoomProc:
            case floatZoomGrowProc:
                Tcl_SetResult(interp, "floatZoomProc", TCL_STATIC);
                break;
            case floatSideProc:
            case floatSideGrowProc:
                Tcl_SetResult(interp, "floatSideProc", TCL_STATIC);
                break;
            case floatSideZoomProc:
            case floatSideZoomGrowProc:
                Tcl_SetResult(interp, "floatSideZoomProc", TCL_STATIC);
                break;
            default:
               panic("invalid style");
          }
          if (appearanceSpec) {
              Tcl_Obj *attributeList, *newResult = NULL;
              
              switch (wmPtr->macClass) {
                  case kAlertWindowClass:
                      newResult = Tcl_NewStringObj("alert", -1);
                      break;
                  case kMovableAlertWindowClass:
                      newResult = Tcl_NewStringObj("moveableAlert", -1);
                      break;
                  case kModalWindowClass:
                      newResult = Tcl_NewStringObj("modal", -1);
                      break;
                  case kMovableModalWindowClass:
                      newResult = Tcl_NewStringObj("moveableModal", -1);
                      break;
                  case kFloatingWindowClass:
                      newResult = Tcl_NewStringObj("floating", -1);
                      break;
                  case kDocumentWindowClass:
                      newResult = Tcl_NewStringObj("document", -1);
                      break;
                    case kHelpWindowClass:
                        newResult = Tcl_NewStringObj("help", -1);
                        break;
                    case kToolbarWindowClass:
                        newResult = Tcl_NewStringObj("toolbar", -1);
                        break;
                    default:
                        panic("invalid class");
                }

              attributeList = Tcl_NewListObj(0, NULL);
                if (wmPtr->attributes == kWindowNoAttributes) {
                    Tcl_ListObjAppendElement(interp, attributeList, 
                            Tcl_NewStringObj("none", -1));
                } else if (wmPtr->attributes == kWindowStandardDocumentAttributes) {
                     Tcl_ListObjAppendElement(interp, attributeList, 
                            Tcl_NewStringObj("standardDocument", -1));
                } else if (wmPtr->attributes == kWindowStandardFloatingAttributes) {
                     Tcl_ListObjAppendElement(interp, attributeList, 
                            Tcl_NewStringObj("standardFloating", -1));                  
                } else {
                    if (wmPtr->attributes & kWindowCloseBoxAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("closeBox", -1));
                    }
                    if (wmPtr->attributes & kWindowHorizontalZoomAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("horizontalZoom", -1));
                    }
                    if (wmPtr->attributes & kWindowVerticalZoomAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("verticalZoom", -1));
                    }
                    if (wmPtr->attributes & kWindowCollapseBoxAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("collapseBox", -1));
                    }
                    if (wmPtr->attributes & kWindowResizableAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("resizable", -1));
                    }
                    if (wmPtr->attributes & kWindowSideTitlebarAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("sideTitlebar", -1));
                    }
                    if (wmPtr->attributes & kWindowNoUpdatesAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("noUpdates", -1));
                    }
                    if (wmPtr->attributes & kWindowNoActivatesAttribute) {
                        Tcl_ListObjAppendElement(interp, attributeList, 
                                Tcl_NewStringObj("noActivates", -1));
                    }
                }
                Tcl_ListObjAppendElement(interp, newResult, attributeList);
                Tcl_SetObjResult(interp, newResult);       
          }
          return TCL_OK;
        } else if (argc == 4) {
      if (strcmp(argv[3], "documentProc") == 0) {
          wmPtr->style = documentProc;
      } else if (strcmp(argv[3], "noGrowDocProc") == 0) {
          wmPtr->style = documentProc;
      } else if (strcmp(argv[3], "dBoxProc") == 0) {
          wmPtr->style = dBoxProc;
      } else if (strcmp(argv[3], "plainDBox") == 0) {
          wmPtr->style = plainDBox;
      } else if (strcmp(argv[3], "altDBoxProc") == 0) {
          wmPtr->style = altDBoxProc;
      } else if (strcmp(argv[3], "movableDBoxProc") == 0) {
          wmPtr->style = movableDBoxProc;
      } else if (strcmp(argv[3], "zoomDocProc") == 0) {
          wmPtr->style = zoomDocProc;
      } else if (strcmp(argv[3], "zoomNoGrow") == 0) {
          wmPtr->style = zoomNoGrow;
      }
        /*
         else
         if (strcmp(argv[3], "rDocProc") == 0) {
          wmPtr->style = rDocProc;
      }
        */
         else if (strcmp(argv[3], "floatProc") == 0) {
          wmPtr->style = floatGrowProc;
      } else if (strcmp(argv[3], "floatGrowProc") == 0) {
          wmPtr->style = floatGrowProc;
      } else if (strcmp(argv[3], "floatZoomProc") == 0) {
          wmPtr->style = floatZoomGrowProc;
      } else if (strcmp(argv[3], "floatZoomGrowProc") == 0) {
          wmPtr->style = floatZoomGrowProc;
      } else if (strcmp(argv[3], "floatSideProc") == 0) {
          wmPtr->style = floatSideGrowProc;
      } else if (strcmp(argv[3], "floatSideGrowProc") == 0) {
          wmPtr->style = floatSideGrowProc;
      } else if (strcmp(argv[3], "floatSideZoomProc") == 0) {
          wmPtr->style = floatSideZoomGrowProc;
      } else if (strcmp(argv[3], "floatSideZoomGrowProc") == 0) {
          wmPtr->style = floatSideZoomGrowProc;
      } else {
          Tcl_AppendResult(interp, "bad style: should be documentProc, ",
                "dBoxProc, plainDBox, altDBoxProc, movableDBoxProc, ",
                "zoomDocProc, rDocProc, floatProc, floatZoomProc, ",
                "floatSideProc, or floatSideZoomProc",
                (char *) NULL);
          return TCL_ERROR;
      }
      } else if (argc == 5) {
          int oldClass = wmPtr->macClass;
          int oldAttributes = wmPtr->attributes;
          
          if (strcmp(argv[3], "alert") == 0) {
              wmPtr->macClass = kAlertWindowClass;
          } else if (strcmp(argv[3], "moveableAlert") == 0) {
              wmPtr->macClass = kMovableAlertWindowClass;
          } else if (strcmp(argv[3], "modal") == 0) {
              wmPtr->macClass = kModalWindowClass;
          } else if (strcmp(argv[3], "moveableModal") == 0) {
              wmPtr->macClass = kMovableModalWindowClass;
          } else if (strcmp(argv[3], "floating") == 0) {
              wmPtr->macClass = kFloatingWindowClass;
            } else if (strcmp(argv[3], "document") == 0) {
                wmPtr->macClass = kDocumentWindowClass;
            } else if (strcmp(argv[3], "help") == 0) {
                wmPtr->macClass = kHelpWindowClass;
            } else if (strcmp(argv[3], "toolbar") == 0) {
                wmPtr->macClass = kToolbarWindowClass;
          } else {
              wmPtr->macClass = oldClass;
              Tcl_AppendResult(interp, "bad class: should be alert, ",
                    "moveableAlert, modal, moveableModal, floating, ",
                    "help, or document",
                    (char *) NULL);
              return TCL_ERROR;
          }
          
          if (strcmp(argv[4], "none") == 0) {
              wmPtr->attributes = kWindowNoAttributes;
          } else if (strcmp(argv[4], "standardDocument") == 0) {
              wmPtr->attributes = kWindowStandardDocumentAttributes;
          } else if (strcmp(argv[4], "standardFloating") == 0) {
              wmPtr->attributes = kWindowStandardFloatingAttributes;
          } else {
              int foundOne = 0;
              int attrArgc, i;
              CONST char **attrArgv = NULL;
              
              if (Tcl_SplitList(interp, argv[4], &attrArgc, &attrArgv) != TCL_OK) {
                  wmPtr->macClass = oldClass;
                  Tcl_AppendResult(interp, "Ill-formed attributes list: \"",
                      argv[4], "\".", (char *) NULL);
                  return TCL_ERROR;
              }
                          
              wmPtr->attributes = kWindowNoAttributes;
              
              for (i = 0; i < attrArgc; i++) {
                  if ((*attrArgv[i] == 'c') 
                          && (strcmp(attrArgv[i], "closeBox")  == 0)) {
                      wmPtr->attributes |= kWindowCloseBoxAttribute;
                      foundOne = 1;
                  } else if ((*attrArgv[i] == 'h') 
                          && (strcmp(attrArgv[i], "horizontalZoom")  == 0)) {
                      wmPtr->attributes |= kWindowHorizontalZoomAttribute;
                      foundOne = 1;
                  } else if ((*attrArgv[i] == 'v') 
                          && (strcmp(attrArgv[i], "verticalZoom")  == 0)) {
                      wmPtr->attributes |= kWindowVerticalZoomAttribute;
                      foundOne = 1;
                  } else if ((*attrArgv[i] == 'c') 
                          && (strcmp(attrArgv[i], "collapseBox")  == 0)) {
                      wmPtr->attributes |= kWindowCollapseBoxAttribute;
                      foundOne = 1;
                  } else if ((*attrArgv[i] == 'r') 
                          && (strcmp(attrArgv[i], "resizable")  == 0)) {
                      wmPtr->attributes |= kWindowResizableAttribute;
                      foundOne = 1;
                  } else if ((*attrArgv[i] == 's') 
                          && (strcmp(attrArgv[i], "sideTitlebar")  == 0)) {
                      wmPtr->attributes |= kWindowSideTitlebarAttribute;
                  foundOne = 1;
                } else if ((*attrArgv[i] == 'n') 
                         && (strcmp(attrArgv[i], "noActivates")  == 0)) {
                  wmPtr->attributes |= kWindowNoActivatesAttribute;
                  foundOne = 1;
                } else if ((*attrArgv[i] == 'n') 
                         && (strcmp(attrArgv[i], "noUpdates")  == 0)) {
                  wmPtr->attributes |= kWindowNoUpdatesAttribute;
                      foundOne = 1;
                  } else {
                      foundOne = 0;
                      break;
                  }
              }
              
              if (attrArgv != NULL) {
                  ckfree ((char *) attrArgv);
              }
              
              if (foundOne != 1) {
                  wmPtr->macClass = oldClass;
                  wmPtr->attributes = oldAttributes;
                  
                  Tcl_AppendResult(interp, "bad attribute: \"", argv[4], 
                          "\", should be standardDocument, ",
                        "standardFloating, or some combination of ",
                        "closeBox, horizontalZoom, verticalZoom, ",
                        "collapseBox, resizable, or sideTitlebar.",
                        (char *) NULL);
                  return TCL_ERROR;
              }
          }
          
          wmPtr->style = -1;
      }
    } else {
      Tcl_AppendResult(interp, "unknown or ambiguous option \"", argv[1],
            "\": must be style",
            (char *) NULL);
      return TCL_ERROR;
    }
    
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpMakeMenuWindow --
 *
 *    Configure the window to be either a undecorated pull-down 
 *    (or pop-up) menu, or as a toplevel floating menu (palette).
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Changes the style bit used to create a new Mac toplevel.
 *
 *----------------------------------------------------------------------
 */

void
TkpMakeMenuWindow(
    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 
                         * floating menu. */
{
    if (transient) {
      ((TkWindow *) tkwin)->wmInfoPtr->style = plainDBox;
    } else {
      ((TkWindow *) tkwin)->wmInfoPtr->style = floatProc;
      ((TkWindow *) tkwin)->wmInfoPtr->flags |= WM_WIDTH_NOT_RESIZABLE;
      ((TkWindow *) tkwin)->wmInfoPtr->flags |= WM_HEIGHT_NOT_RESIZABLE;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXMakeRealWindowExist --
 *
 *    This function finally creates the real Macintosh window that
 *    the Mac actually understands.  
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    A new Macintosh toplevel is created.
 *
 *----------------------------------------------------------------------
 */
 
void 
TkMacOSXMakeRealWindowExist(
    TkWindow *winPtr)   /* Tk window. */
{
    WmInfo *wmPtr = winPtr->wmInfoPtr;
    WindowRef  newWindow  = NULL;
    ControlRef rootControl = NULL;
    MacDrawable *macWin;
    Rect geometry = {0,0,0,0};
    Tcl_HashEntry *valueHashPtr;
    int new;
    TkMacOSXWindowList *listPtr;

    if (TkMacOSXHostToplevelExists(winPtr)) {
      return;
    }
    
    macWin = (MacDrawable *) winPtr->window;

    /*
     * If this is embedded, make sure its container's toplevel exists,
     * then return... 
     */
    
    if (Tk_IsEmbedded(winPtr)) {
      TkWindow *contWinPtr;

      contWinPtr = TkpGetOtherWindow(winPtr);
      if (contWinPtr != NULL) {
          TkMacOSXMakeRealWindowExist(contWinPtr->privatePtr->toplevel->winPtr);
          macWin->flags |= TK_HOST_EXISTS;
          return;
      } else if (gMacEmbedHandler != NULL) {
          if (gMacEmbedHandler->containerExistProc != NULL) {
              if (gMacEmbedHandler->containerExistProc((Tk_Window) winPtr) != TCL_OK) {
                 panic("ContainerExistProc could not make container");
             }
          }
          return;
      } else {
          panic("TkMacOSXMakeRealWindowExist could not find container");
      }

      /*
       * NOTE: Here we should handle out of process embedding.
       */
      
    }
    
    InitialWindowBounds(winPtr, &geometry);
      
    if (wmPtr->style == -1) {
        OSStatus err;        
        /*
         * There seems to be a bug in CreateNewWindow: If I set the
         * window geometry to be the too small for the structure region,
         * then the whole window is positioned incorrectly.
         * Adding this here makes the positioning work, and the size will
         * get overwritten when you actually map the contents of the window.
         */
         
        geometry.right += 64;
        geometry.bottom += 24;
        err = CreateNewWindow(wmPtr->macClass, wmPtr->attributes, 
                &geometry, &newWindow);
        if (err != noErr) {
            newWindow = NULL;
        }
        
    } else {
        newWindow = NewCWindow(NULL, &geometry, "\ptemp", false, 
          (short) wmPtr->style, (WindowRef) -1, true, 0);
    }
    
    if (newWindow == NULL) {
      panic("couldn't allocate new Mac window");
    }
    if (CreateRootControl(newWindow,&rootControl) != noErr ) {
        panic("couldn't create root control for new Mac window");
    }
    
    /*
     * Add this window to the list of toplevel windows.
     */
    
    listPtr = (TkMacOSXWindowList *) ckalloc(sizeof(TkMacOSXWindowList));
    listPtr->nextPtr = tkMacOSXWindowListPtr;
    listPtr->winPtr = winPtr;
    tkMacOSXWindowListPtr = listPtr;
    
    macWin->grafPtr = GetWindowPort ( newWindow );
    macWin->rootControl = rootControl;
    MoveWindowStructure(newWindow, geometry.left, geometry.top);
    SetPort(GetWindowPort(newWindow));
    
    if (!windowHashInit) {
      Tcl_InitHashTable(&windowTable, TCL_ONE_WORD_KEYS);
      windowHashInit = true;
    }
    valueHashPtr = Tcl_CreateHashEntry(&windowTable,
          (char *) newWindow, &new);
    if (!new) {
      panic("same macintosh window allocated twice!");
    }
    Tcl_SetHashValue(valueHashPtr, macWin);
    
    macWin->flags |= TK_HOST_EXISTS;
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXRegisterOffScreenWindow --
 *
 *    This function adds the passed in Off Screen Port to the
 *    hash table that maps Mac windows to root X windows. 
 *
 *      FIXME: This is not currently used.  Is there any reason
 *      to keep it? 
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    An entry is added to the windowTable hash table.
 *
 *----------------------------------------------------------------------
 */

void 
TkMacOSXRegisterOffScreenWindow(
    Window window,      /* Window structure. */
    GWorldPtr portPtr)  /* Pointer to a Mac GWorld. */
{
    MacDrawable *macWin;
    Tcl_HashEntry *valueHashPtr;
    int new;

    macWin = (MacDrawable *) window;
    if (!windowHashInit) {
      Tcl_InitHashTable(&windowTable, TCL_ONE_WORD_KEYS);
      windowHashInit = true;
    }
    valueHashPtr = Tcl_CreateHashEntry(&windowTable,
          (char *) portPtr, &new);
    if (!new) {
      panic("same macintosh window allocated twice!");
    }
    Tcl_SetHashValue(valueHashPtr, macWin);
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXUnregisterMacWindow --
 *
 *    Given a macintosh port window, this function removes the 
 *    association between this window and the root X window that
 *    Tk cares about.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    An entry is removed from the windowTable hash table.
 *
 *----------------------------------------------------------------------
 */

void 
TkMacOSXUnregisterMacWindow(
    WindowRef macWinPtr)      /* Reference to a Mac Window */
{
 Tcl_HashEntry *entryPtr;
    if (!windowHashInit) {
      panic("TkMacOSXUnregisterMacWindow: unmapping before inited");
    }
    entryPtr = Tcl_FindHashEntry(&windowTable,(char *) macWinPtr);
    if (!entryPtr) {
          fprintf(stderr,"Unregister:failed to find window %08x\n", 
                 (int) macWinPtr );
    }
    else {
      Tcl_DeleteHashEntry(entryPtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXSetScrollbarGrow --
 *
 *    Sets a flag for a toplevel window indicating that the passed
 *    Tk scrollbar window will display the grow region for the 
 *    toplevel window.
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    A flag is set int windows toplevel parent.
 *
 *----------------------------------------------------------------------
 */

void 
TkMacOSXSetScrollbarGrow(
    TkWindow *winPtr,         /* Tk scrollbar window. */
    int flag)                 /* Boolean value true or false. */
{
    if (flag) {
      winPtr->privatePtr->toplevel->flags |= TK_SCROLLBAR_GROW;
      winPtr->privatePtr->toplevel->winPtr->wmInfoPtr->scrollWinPtr = winPtr;
    } else if (winPtr->privatePtr->toplevel->winPtr->wmInfoPtr->scrollWinPtr
          == winPtr) {
      winPtr->privatePtr->toplevel->flags &= ~TK_SCROLLBAR_GROW;
      winPtr->privatePtr->toplevel->winPtr->wmInfoPtr->scrollWinPtr = NULL;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * 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(
    TkWindow *winPtr)         /* Window that received a focus-related
                         * event. */
{
    if (!(winPtr->flags & TK_TOP_LEVEL)) {
      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_LEVEL)) {
      return NULL;
    }
    return winPtr;
}

/*
 *----------------------------------------------------------------------
 *
 * 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;
    WindowRef macWin;
    
    wmPtr->hints.initial_state = state;
    if (wmPtr->flags & WM_NEVER_MAPPED) {
      return;
    }

    macWin = GetWindowFromPort(TkMacOSXGetDrawablePort (winPtr->window));

    if (state == WithdrawnState) {
      Tk_UnmapWindow((Tk_Window) winPtr);
    } else if (state == IconicState) {
      Tk_UnmapWindow((Tk_Window) winPtr);
          /*
           * The window always gets unmapped.  However, if we can show the
           * icon version of the window (collapsed) we make the window visable
           * and then collapse it.
           *
           * TODO: This approach causes flashing!
           */

          if (IsWindowCollapsable(macWin)) {
            ShowWindow(macWin);
            CollapseWindow( macWin, true);
          }

    } else if (state == NormalState) {
      Tk_MapWindow((Tk_Window) winPtr);
        CollapseWindow((WindowPtr) macWin, false);
    } else if (state == ZoomState) {
      /* TODO: need to support zoomed windows */
    }
}

/*
 *----------------------------------------------------------------------
 *
 * TkpIsWindowFloating --
 *
 *        Returns 1 if a window is floating, 0 otherwise.
 *
 * Results:
 *        1 or 0 depending on window's floating attribute.
 *
 * Side effects:
 *        None.
 *
 *----------------------------------------------------------------------
 */

int
TkpIsWindowFloating(WindowRef wRef)
{
    WindowClass class;

    if (wRef == NULL) {
        return 0;
    }
    
    GetWindowClass(wRef, &class);
    return (class == kFloatingWindowClass);
}

/*
 *----------------------------------------------------------------------
 *
 * TkMacOSXWindowOffset --
 *
 *        Determines the x and y offset from the orgin of the toplevel
 *        window dressing (the structure region, ie. title bar) and the
 *        orgin of the content area.
 *
 * Results:
 *        The x & y offset in pixels.
 *
 * Side effects:
 *        None.
 *
 *----------------------------------------------------------------------
 */

void
TkMacOSXWindowOffset(
    WindowRef wRef,
    int *xOffset,
    int *yOffset)
{
    OSErr err = noErr;
    static RgnHandle strucRgn = NULL;
    static RgnHandle contRgn  = NULL;
    Rect strucRect, contRect;

    if (!strucRgn) {
        if(!(strucRgn = NewRgn())) {
           err = MemError();
        }
    }
    if (!contRgn) {
        if(!(contRgn = NewRgn())) {
           err = MemError();
        }
    }
    if (err == noErr) {
        GetWindowRegion(wRef, kWindowStructureRgn, strucRgn);
        GetWindowRegion(wRef, kWindowContentRgn, contRgn);
        GetRegionBounds(strucRgn,&strucRect);
        GetRegionBounds(contRgn,&contRect);
        *xOffset = contRect.left - strucRect.left;
        *yOffset = contRect.top - strucRect.top;
    } else {
        *xOffset = 0;
        *yOffset = 0;
    }
    return;
}

/*
 *----------------------------------------------------------------------
 *
 * TkpGetMS --
 *
 *        Return a relative time in milliseconds.  It doesn't matter
 *        when the epoch was.
 *
 * Results:
 *        Number of milliseconds.
 *
 * Side effects:
 *        None.
 *
 *----------------------------------------------------------------------
 */

unsigned long
TkpGetMS()
{
    long long * int64Ptr;
    UnsignedWide micros;
    
    Microseconds(&micros);
    int64Ptr = (long long *) &micros;

    /*
     * We need 64 bit math to do this.  This is available in CW 11
     * and on.  Other's will need to use a different scheme.
     */

    *int64Ptr /= 1000;

    return (long) *int64Ptr;
}

/*
 *----------------------------------------------------------------------
 *
 * XSetInputFocus --
 *
 *        Change the focus window for the application.
 *
 * Results:
 *        None.
 *
 * Side effects:
 *        None.
 *
 *----------------------------------------------------------------------
 */

void
XSetInputFocus(
    Display* display,
    Window focus,
    int revert_to,
    Time time)
{
    /*
     * Don't need to do a thing.  Tk manages the focus for us.
     */
}

/*
 *----------------------------------------------------------------------
 *
 * TkpChangeFocus --
 *
 *        This procedure is a stub on the Mac because we always own the
 *        focus if we are a front most application.
 *
 * Results:
 *        The return value is the serial number of the command that
 *        changed the focus.  It may be needed by the caller to filter
 *        out focus change events that were queued before the command.
 *        If the procedure doesn't actually change the focus then
 *        it returns 0.
 *
 * Side effects:
 *        None.
 *
 *----------------------------------------------------------------------
 */

int
TkpChangeFocus(winPtr, force)
    TkWindow *winPtr;           /* Window that is to receive the X focus. */
    int force;                  /* Non-zero means claim the focus even
                                 * if it didn't originally belong to
                                 * topLevelPtr's application. */
{
    /*
     * We don't really need to do anything on the Mac.  Tk will
     * keep all this state for us.
     */

    if (winPtr->atts.override_redirect) {
        return 0;
    }

    /*
     * Remember the current serial number for the X server and issue
     * a dummy server request.  This marks the position at which we
     * changed the focus, so we can distinguish FocusIn and FocusOut
     * events on either side of the mark.
     */

    return NextRequest(winPtr->display);
}


/*
 *----------------------------------------------------------------------
 *
 * TkWmStackorderToplevelWrapperMap --
 *
 *    This procedure will create a table that maps the reparent wrapper
 *    X id for a toplevel to the TkWindow structure that is wraps.
 *    Tk keeps track of a mapping from the window X id to the TkWindow
 *    structure but that does us no good here since we only get the X
 *    id of the wrapper window. Only those toplevel windows that are
 *    mapped have a position in the stacking order.
 *
 *
 * Results:
 *    None.
 *
 * Side effects:
 *    Adds entries to the passed hashtable.
 *
 *----------------------------------------------------------------------
 */
static void
TkWmStackorderToplevelWrapperMap(winPtr, table)
    TkWindow *winPtr;                     /* TkWindow to recurse on */
    Tcl_HashTable *table;                 /* Maps mac window to TkWindow */
{
    TkWindow *childPtr;
    Tcl_HashEntry *hPtr;
    WindowRef macWindow;
    int newEntry;

    if (Tk_IsMapped(winPtr) && Tk_IsTopLevel(winPtr)) {
        macWindow = GetWindowFromPort(TkMacOSXGetDrawablePort(winPtr->window));

        hPtr = Tcl_CreateHashEntry(table,
            (const char *) macWindow, &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. */
{
    WindowRef frontWindow;
    TkWindow *childWinPtr, **windows, **window_ptr;
    Tcl_HashTable table;
    Tcl_HashEntry *hPtr;
    Tcl_HashSearch search;

    /*
     * Map mac windows 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 enumerate Windows.
     */

    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;
    }

    frontWindow = (WindowRef) FrontWindow();

    if (frontWindow == NULL) {
        ckfree((char *) windows);
        windows = NULL;
    } else {
      window_ptr = windows + table.numEntries;
      *window_ptr-- = NULL;
          while (frontWindow != NULL) {
                hPtr = Tcl_FindHashEntry(&table, (char *) frontWindow);
            if (hPtr != NULL) {
                childWinPtr = (TkWindow *) Tcl_GetHashValue(hPtr);
                *window_ptr-- = childWinPtr;
            }
            frontWindow = GetNextWindow(frontWindow);
          }
        if (window_ptr != (windows-1))
            panic("num matched toplevel windows does not equal num children");
    }

    done:
    Tcl_DeleteHashTable(&table);
    return windows;
}






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