Initial revision

1 files changed, 4213 insertions, 0 deletions

diff --git a/mac/tkMacWm.c b/mac/tkMacWm.c
new file mode 100644
index 0000000..56c4b8a
--- /dev/null
+++ b/mac/tkMacWm.c
@@ -0,0 +1,4213 @@
+/* 
+ * tkMacWm.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.
+ *
+ * See the file "license.terms" for information on usage and redistribution
+ * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ *
+ * SCCS: @(#) tkMacWm.c 1.72 97/10/29 13:27:30
+ */
+
+#include <Gestalt.h>
+#include <QDOffscreen.h>
+#include <Windows.h>
+#include <ToolUtils.h>
+
+#include "tkPort.h"
+#include "tkInt.h"
+#include "tkMacInt.h"
+#include <errno.h>
+#include "tkScrollbar.h"
+
+/*
+ * If HAVE_APPEARANCE is defined in MW_TkHeader.pch then we must have the
+ * Appearance manager header & library.  If so we can use these new API's to
+ * have the iconify code do the right thing.
+ */
+
+#ifdef HAVE_APPEARANCE
+#   include <Appearance.h>
+#endif
+
+/*
+ * A data structure of the following type holds information for
+ * each window manager protocol (such as WM_DELETE_WINDOW) for
+ * which a handler (i.e. a Tcl command) has been defined for a
+ * particular top-level window.
+ */
+
+typedef struct ProtocolHandler {
+    Atom protocol;		/* Identifies the protocol. */
+    struct ProtocolHandler *nextPtr;
+				/* Next in list of protocol handlers for
+				 * the same top-level window, or NULL for
+				 * end of list. */
+    Tcl_Interp *interp;		/* Interpreter in which to invoke command. */
+    char command[4];		/* Tcl command to invoke when a client
+				 * message for this protocol arrives. 
+				 * The actual size of the structure varies
+				 * to accommodate the needs of the actual
+				 * command. THIS MUST BE THE LAST FIELD OF
+				 * THE STRUCTURE. */
+} ProtocolHandler;
+
+#define HANDLER_SIZE(cmdLength) \
+((unsigned) (sizeof(ProtocolHandler) - 3 + cmdLength))
+
+/*
+ * A data structure of the following type holds window-manager-related
+ * information for each top-level window in an application.
+ */
+
+typedef struct TkWmInfo {
+    TkWindow *winPtr;		/* Pointer to main Tk information for
+				 * this window. */
+    Window reparent;		/* If the window has been reparented, this
+				 * gives the ID of the ancestor of the window
+				 * that is a child of the root window (may
+				 * not be window's immediate parent).  If
+				 * the window isn't reparented, this has the
+				 * value None. */
+    Tk_Uid titleUid;		/* Title to display in window caption.  If
+				 * NULL, use name of widget. */
+    Tk_Uid iconName;		/* Name to display in icon. */
+    Window master;		/* Master window for TRANSIENT_FOR property,
+				 * or None. */
+    XWMHints hints;		/* Various pieces of information for
+				 * window manager. */
+    char *leaderName;		/* Path name of leader of window group
+				 * (corresponds to hints.window_group).
+				 * Malloc-ed.  Note:  this field doesn't
+				 * get updated if leader is destroyed. */
+    char *masterWindowName;	/* Path name of window specified as master
+				 * in "wm transient" command, or NULL.
+				 * Malloc-ed. Note:  this field doesn't
+				 * get updated if masterWindowName is
+				 * destroyed. */
+    Tk_Window icon;		/* Window to use as icon for this window,
+				 * or NULL. */
+    Tk_Window iconFor;		/* Window for which this window is icon, or
+				 * NULL if this isn't an icon for anyone. */
+
+    /*
+     * Information used to construct an XSizeHints structure for
+     * the window manager:
+     */
+
+    int sizeHintsFlags;		/* Flags word for XSizeHints structure.
+				 * If the PBaseSize flag is set then the
+				 * window is gridded;  otherwise it isn't
+				 * gridded. */
+    int minWidth, minHeight;	/* Minimum dimensions of window, in
+				 * grid units, not pixels. */
+    int maxWidth, maxHeight;	/* Maximum dimensions of window, in
+				 * grid units, not pixels. */
+    Tk_Window gridWin;		/* Identifies the window that controls
+				 * gridding for this top-level, or NULL if
+				 * the top-level isn't currently gridded. */
+    int widthInc, heightInc;	/* Increments for size changes (# pixels
+				 * per step). */
+    struct {
+	int x;	/* numerator */
+	int y;  /* denominator */
+    } minAspect, maxAspect;	/* Min/max aspect ratios for window. */
+    int reqGridWidth, reqGridHeight;
+				/* The dimensions of the window (in
+				 * grid units) requested through
+				 * the geometry manager. */
+    int gravity;		/* Desired window gravity. */
+
+    /*
+     * Information used to manage the size and location of a window.
+     */
+
+    int width, height;		/* Desired dimensions of window, specified
+				 * in grid units.  These values are
+				 * set by the "wm geometry" command and by
+				 * ConfigureNotify events (for when wm
+				 * resizes window).  -1 means user hasn't
+				 * requested dimensions. */
+    int x, y;			/* Desired X and Y coordinates for window.
+				 * These values are set by "wm geometry",
+				 * plus by ConfigureNotify events (when wm
+				 * moves window).  These numbers are
+				 * different than the numbers stored in
+				 * winPtr->changes because (a) they could be
+				 * measured from the right or bottom edge
+				 * of the screen (see WM_NEGATIVE_X and
+				 * WM_NEGATIVE_Y flags) and (b) if the window
+				 * has been reparented then they refer to the
+				 * parent rather than the window itself. */
+    int parentWidth, parentHeight;
+				/* Width and height of reparent, in pixels
+				 * *including border*.  If window hasn't been
+				 * reparented then these will be the outer
+				 * dimensions of the window, including
+				 * border. */
+    int xInParent, yInParent;	/* Offset of window within reparent,  measured
+				 * from upper-left outer corner of parent's
+				 * border to upper-left outer corner of child's
+				 * border.  If not reparented then these are
+				 * zero. */
+    int configWidth, configHeight;
+				/* Dimensions passed to last request that we
+				 * issued to change geometry of window.  Used
+				 * to eliminate redundant resize operations. */
+
+    /*
+     * Information about the virtual root window for this top-level,
+     * if there is one.
+     */
+
+    Window vRoot;		/* Virtual root window for this top-level,
+				 * or None if there is no virtual root
+				 * window (i.e. just use the screen's root). */
+    int vRootX, vRootY;		/* Position of the virtual root inside the
+				 * root window.  If the WM_VROOT_OFFSET_STALE
+				 * flag is set then this information may be
+				 * incorrect and needs to be refreshed from
+				 * the X server.  If vRoot is None then these
+				 * values are both 0. */
+    unsigned int vRootWidth, vRootHeight;
+				/* Dimensions of the virtual root window.
+				 * If vRoot is None, gives the dimensions
+				 * of the containing screen.  This information
+				 * is never stale, even though vRootX and
+				 * vRootY can be. */
+
+    /*
+     * List of children of the toplevel which have private colormaps.
+     */
+
+    TkWindow **cmapList;	/* Array of window with private colormaps. */
+    int cmapCount;		/* Number of windows in array. */
+
+    /*
+     * Miscellaneous information.
+     */
+
+    ProtocolHandler *protPtr;	/* First in list of protocol handlers for
+				 * this window (NULL means none). */
+    int cmdArgc;		/* Number of elements in cmdArgv below. */
+    char **cmdArgv;		/* Array of strings to store in the
+				 * WM_COMMAND property.  NULL means nothing
+				 * available. */
+    char *clientMachine;	/* String to store in WM_CLIENT_MACHINE
+				 * property, or NULL. */
+    int flags;			/* Miscellaneous flags, defined below. */
+
+    /*
+     * Macintosh information.
+     */
+    int style;			/* Native window style. */
+    TkWindow *scrollWinPtr;	/* Ptr to scrollbar handling grow widget. */
+} WmInfo;
+
+
+/*
+ * Flag values for WmInfo structures:
+ *
+ * WM_NEVER_MAPPED -		non-zero means window has never been
+ *				mapped;  need to update all info when
+ *				window is first mapped.
+ * WM_UPDATE_PENDING -		non-zero means a call to UpdateGeometryInfo
+ *				has already been scheduled for this
+ *				window;  no need to schedule another one.
+ * WM_NEGATIVE_X -		non-zero means x-coordinate is measured in
+ *				pixels from right edge of screen, rather
+ *				than from left edge.
+ * WM_NEGATIVE_Y -		non-zero means y-coordinate is measured in
+ *				pixels up from bottom of screen, rather than
+ *				down from top.
+ * WM_UPDATE_SIZE_HINTS -	non-zero means that new size hints need to be
+ *				propagated to window manager.
+ * WM_SYNC_PENDING -		set to non-zero while waiting for the window
+ *				manager to respond to some state change.
+ * WM_VROOT_OFFSET_STALE -	non-zero means that (x,y) offset information
+ *				about the virtual root window is stale and
+ *				needs to be fetched fresh from the X server.
+ * WM_ABOUT_TO_MAP -		non-zero means that the window is about to
+ *				be mapped by TkWmMapWindow.  This is used
+ *				by UpdateGeometryInfo to modify its behavior.
+ * WM_MOVE_PENDING -		non-zero means the application has requested
+ *				a new position for the window, but it hasn't
+ *				been reflected through the window manager
+ *				yet.
+ * WM_COLORMAPS_EXPLICIT -	non-zero means the colormap windows were
+ *				set explicitly via "wm colormapwindows".
+ * WM_ADDED_TOPLEVEL_COLORMAP - non-zero means that when "wm colormapwindows"
+ *				was called the top-level itself wasn't
+ *				specified, so we added it implicitly at
+ *				the end of the list.
+ * WM_WIDTH_NOT_RESIZABLE -	non-zero means that we're not supposed to
+ *				allow the user to change the width of the
+ *				window (controlled by "wm resizable"
+ *				command).
+ * WM_HEIGHT_NOT_RESIZABLE -	non-zero means that we're not supposed to
+ *				allow the user to change the height of the
+ *				window (controlled by "wm resizable"
+ *				command).
+ */
+
+#define WM_NEVER_MAPPED			1
+#define WM_UPDATE_PENDING		2
+#define WM_NEGATIVE_X			4
+#define WM_NEGATIVE_Y			8
+#define WM_UPDATE_SIZE_HINTS		0x10
+#define WM_SYNC_PENDING			0x20
+#define WM_VROOT_OFFSET_STALE		0x40
+#define WM_ABOUT_TO_MAP			0x100
+#define WM_MOVE_PENDING			0x200
+#define WM_COLORMAPS_EXPLICIT		0x400
+#define WM_ADDED_TOPLEVEL_COLORMAP	0x800
+#define WM_WIDTH_NOT_RESIZABLE		0x1000
+#define WM_HEIGHT_NOT_RESIZABLE		0x2000
+
+/*
+ * 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.
+ */
+
+TkMacWindowList *tkMacWindowListPtr = 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;
+
+void MacMoveWindow(WindowRef window, int x, int y);
+
+/*
+ * Forward declarations for procedures defined in this file:
+ */
+
+static int		HaveAppearance _ANSI_ARGS_((void));
+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		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));
+
+/*
+ *--------------------------------------------------------------
+ *
+ * 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. */
+{
+    register 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 = zoomDocProc;
+    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. */
+{
+    register 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 (!TkMacHostToplevelExists(winPtr)) {
+	    TkMacMakeRealWindowExist(winPtr);
+	}
+	
+	/*
+	 * Generate configure event when we first map the window.
+	 */
+	LocalToGlobal(&where);
+	TkMacWindowOffset((WindowRef) TkMacGetDrawablePort((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).
+     */
+    TkMacWindowOffset((WindowRef) TkMacGetDrawablePort(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. */
+{
+    register 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_WmCmd --
+ *
+ *	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_WmCmd(
+    ClientData clientData,	/* Main window associated with
+				 * interpreter. */
+    Tcl_Interp *interp,		/* Current interpreter. */
+    int argc,			/* Number of arguments. */
+    char **argv)		/* Argument strings. */
+{
+    Tk_Window tkwin = (Tk_Window) clientData;
+    TkWindow *winPtr;
+    register WmInfo *wmPtr;
+    int c;
+    size_t length;
+
+    if (argc < 2) {
+	wrongNumArgs:
+	Tcl_AppendResult(interp, "wrong # args: should be \"",
+		argv[0], " option window ?arg ...?\"", (char *) NULL);
+	return TCL_ERROR;
+    }
+    c = argv[1][0];
+    length = strlen(argv[1]);
+    if ((c == 't') && (strncmp(argv[1], "tracing", length) == 0)
+	    && (length >= 3)) {
+	if ((argc != 2) && (argc != 3)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " tracing ?boolean?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 2) {
+	    interp->result = (wmTracing) ? "on" : "off";
+	    return TCL_OK;
+	}
+	return Tcl_GetBoolean(interp, argv[2], &wmTracing);
+    }
+
+    if (argc < 3) {
+	goto wrongNumArgs;
+    }
+    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;
+    if ((c == 'a') && (strncmp(argv[1], "aspect", length) == 0)) {
+	int numer1, denom1, numer2, denom2;
+
+	if ((argc != 3) && (argc != 7)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " aspect window ?minNumer minDenom ",
+		    "maxNumer maxDenom?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->sizeHintsFlags & PAspect) {
+		sprintf(interp->result, "%d %d %d %d", wmPtr->minAspect.x,
+			wmPtr->minAspect.y, wmPtr->maxAspect.x,
+			wmPtr->maxAspect.y);
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    wmPtr->sizeHintsFlags &= ~PAspect;
+	} else {
+	    if ((Tcl_GetInt(interp, argv[3], &numer1) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[4], &denom1) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[5], &numer2) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[6], &denom2) != TCL_OK)) {
+		return TCL_ERROR;
+	    }
+	    if ((numer1 <= 0) || (denom1 <= 0) || (numer2 <= 0) ||
+		    (denom2 <= 0)) {
+		interp->result = "aspect number can't be <= 0";
+		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;
+	goto updateGeom;
+    } else if ((c == 'c') && (strncmp(argv[1], "client", length) == 0)
+	    && (length >= 2)) {
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " client window ?name?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->clientMachine != NULL) {
+		interp->result = wmPtr->clientMachine;
+	    }
+	    return TCL_OK;
+	}
+	if (argv[3][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) (strlen(argv[3]) + 1));
+	strcpy(wmPtr->clientMachine, argv[3]);
+    } else if ((c == 'c') && (strncmp(argv[1], "colormapwindows", length) == 0)
+	    && (length >= 3)) {
+	TkWindow **cmapList;
+	TkWindow *winPtr2;
+	int i, windowArgc, gotToplevel;
+	char **windowArgv;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " colormapwindows window ?windowList?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 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_SplitList(interp, argv[3], &windowArgc, &windowArgv)
+		!= TCL_OK) {
+	    return TCL_ERROR;
+	}
+	cmapList = (TkWindow **) ckalloc((unsigned)
+		((windowArgc+1)*sizeof(TkWindow*)));
+	for (i = 0; i < windowArgc; i++) {
+	    winPtr2 = (TkWindow *) Tk_NameToWindow(interp, windowArgv[i],
+		    tkwin);
+	    if (winPtr2 == NULL) {
+		ckfree((char *) cmapList);
+		ckfree((char *) windowArgv);
+		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[windowArgc] = winPtr;
+	    windowArgc++;
+	} 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 = windowArgc;
+	ckfree((char *) windowArgv);
+
+	/*
+	 * 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;
+    } else if ((c == 'c') && (strncmp(argv[1], "command", length) == 0)
+	    && (length >= 3)) {
+	int cmdArgc;
+	char **cmdArgv;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " command window ?value?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->cmdArgv != NULL) {
+		interp->result = Tcl_Merge(wmPtr->cmdArgc, wmPtr->cmdArgv);
+		interp->freeProc = (Tcl_FreeProc *) free;
+	    }
+	    return TCL_OK;
+	}
+	if (argv[3][0] == 0) {
+	    if (wmPtr->cmdArgv != NULL) {
+		ckfree((char *) wmPtr->cmdArgv);
+		wmPtr->cmdArgv = NULL;
+	    }
+	    return TCL_OK;
+	}
+	if (Tcl_SplitList(interp, argv[3], &cmdArgc, &cmdArgv) != TCL_OK) {
+	    return TCL_ERROR;
+	}
+	if (wmPtr->cmdArgv != NULL) {
+	    ckfree((char *) wmPtr->cmdArgv);
+	}
+	wmPtr->cmdArgc = cmdArgc;
+	wmPtr->cmdArgv = cmdArgv;
+    } else if ((c == 'd') && (strncmp(argv[1], "deiconify", length) == 0)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " deiconify window\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (wmPtr->iconFor != NULL) {
+	    Tcl_AppendResult(interp, "can't deiconify ", argv[2],
+		    ": it is an icon for ", winPtr->pathName, (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);
+    } else if ((c == 'f') && (strncmp(argv[1], "focusmodel", length) == 0)
+	    && (length >= 2)) {
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " focusmodel window ?active|passive?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    interp->result = wmPtr->hints.input ? "passive" : "active";
+	    return TCL_OK;
+	}
+	c = argv[3][0];
+	length = strlen(argv[3]);
+	if ((c == 'a') && (strncmp(argv[3], "active", length) == 0)) {
+	    wmPtr->hints.input = False;
+	} else if ((c == 'p') && (strncmp(argv[3], "passive", length) == 0)) {
+	    wmPtr->hints.input = True;
+	} else {
+	    Tcl_AppendResult(interp, "bad argument \"", argv[3],
+		    "\": must be active or passive", (char *) NULL);
+	    return TCL_ERROR;
+	}
+    } else if ((c == 'f') && (strncmp(argv[1], "frame", length) == 0)
+	    && (length >= 2)) {
+	Window window;
+
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " frame window\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	window = wmPtr->reparent;
+	if (window == None) {
+	    window = Tk_WindowId((Tk_Window) winPtr);
+	}
+	sprintf(interp->result, "0x%x", (unsigned int) window);
+    } else if ((c == 'g') && (strncmp(argv[1], "geometry", length) == 0)
+	    && (length >= 2)) {
+	char xSign, ySign;
+	int width, height;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " geometry window ?newGeometry?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    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(interp->result, "%dx%d%c%d%c%d", width, height,
+		    xSign, wmPtr->x, ySign, wmPtr->y);
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    wmPtr->width = -1;
+	    wmPtr->height = -1;
+	    goto updateGeom;
+	}
+	return ParseGeometry(interp, argv[3], winPtr);
+    } else if ((c == 'g') && (strncmp(argv[1], "grid", length) == 0)
+	    && (length >= 3)) {
+	int reqWidth, reqHeight, widthInc, heightInc;
+
+	if ((argc != 3) && (argc != 7)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " grid window ?baseWidth baseHeight ",
+		    "widthInc heightInc?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->sizeHintsFlags & PBaseSize) {
+		sprintf(interp->result, "%d %d %d %d", wmPtr->reqGridWidth,
+			wmPtr->reqGridHeight, wmPtr->widthInc,
+			wmPtr->heightInc);
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[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_GetInt(interp, argv[3], &reqWidth) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[4], &reqHeight) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[5], &widthInc) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[6], &heightInc) != TCL_OK)) {
+		return TCL_ERROR;
+	    }
+	    if (reqWidth < 0) {
+		interp->result = "baseWidth can't be < 0";
+		return TCL_ERROR;
+	    }
+	    if (reqHeight < 0) {
+		interp->result = "baseHeight can't be < 0";
+		return TCL_ERROR;
+	    }
+	    if (widthInc < 0) {
+		interp->result = "widthInc can't be < 0";
+		return TCL_ERROR;
+	    }
+	    if (heightInc < 0) {
+		interp->result = "heightInc can't be < 0";
+		return TCL_ERROR;
+	    }
+	    Tk_SetGrid((Tk_Window) winPtr, reqWidth, reqHeight, widthInc,
+		    heightInc);
+	}
+	wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
+	goto updateGeom;
+    } else if ((c == 'g') && (strncmp(argv[1], "group", length) == 0)
+	    && (length >= 3)) {
+	Tk_Window tkwin2;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " group window ?pathName?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->hints.flags & WindowGroupHint) {
+		interp->result = wmPtr->leaderName;
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    wmPtr->hints.flags &= ~WindowGroupHint;
+	    if (wmPtr->leaderName != NULL) {
+		ckfree(wmPtr->leaderName);
+	    }
+	    wmPtr->leaderName = NULL;
+	} else {
+	    tkwin2 = Tk_NameToWindow(interp, argv[3], tkwin);
+	    if (tkwin2 == NULL) {
+		return TCL_ERROR;
+	    }
+	    Tk_MakeWindowExist(tkwin2);
+	    wmPtr->hints.window_group = Tk_WindowId(tkwin2);
+	    wmPtr->hints.flags |= WindowGroupHint;
+	    wmPtr->leaderName = ckalloc((unsigned) (strlen(argv[3])+1));
+	    strcpy(wmPtr->leaderName, argv[3]);
+	}
+    } else if ((c == 'i') && (strncmp(argv[1], "iconbitmap", length) == 0)
+	    && (length >= 5)) {
+	Pixmap pixmap;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " iconbitmap window ?bitmap?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->hints.flags & IconPixmapHint) {
+		interp->result = Tk_NameOfBitmap(winPtr->display,
+			wmPtr->hints.icon_pixmap);
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    if (wmPtr->hints.icon_pixmap != None) {
+		Tk_FreeBitmap(winPtr->display, wmPtr->hints.icon_pixmap);
+	    }
+	    wmPtr->hints.flags &= ~IconPixmapHint;
+	} else {
+	    pixmap = Tk_GetBitmap(interp, (Tk_Window) winPtr,
+		    Tk_GetUid(argv[3]));
+	    if (pixmap == None) {
+		return TCL_ERROR;
+	    }
+	    wmPtr->hints.icon_pixmap = pixmap;
+	    wmPtr->hints.flags |= IconPixmapHint;
+	}
+    } else if ((c == 'i') && (strncmp(argv[1], "iconify", length) == 0)
+	    && (length >= 5)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " iconify window\"", (char *) NULL);
+	    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 ", argv[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 iconify ", winPtr->pathName,
+                    ": it is an embedded window", (char *) NULL);
+            return TCL_ERROR;
+        }
+	TkpWmSetState(winPtr, IconicState);
+    } else if ((c == 'i') && (strncmp(argv[1], "iconmask", length) == 0)
+	    && (length >= 5)) {
+	Pixmap pixmap;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " iconmask window ?bitmap?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->hints.flags & IconMaskHint) {
+		interp->result = Tk_NameOfBitmap(winPtr->display,
+			wmPtr->hints.icon_mask);
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\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, Tk_GetUid(argv[3]));
+	    if (pixmap == None) {
+		return TCL_ERROR;
+	    }
+	    wmPtr->hints.icon_mask = pixmap;
+	    wmPtr->hints.flags |= IconMaskHint;
+	}
+    } else if ((c == 'i') && (strncmp(argv[1], "iconname", length) == 0)
+	    && (length >= 5)) {
+	if (argc > 4) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " iconname window ?newName?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    interp->result = (wmPtr->iconName != NULL) ? wmPtr->iconName : "";
+	    return TCL_OK;
+	} else {
+	    wmPtr->iconName = Tk_GetUid(argv[3]);
+	    if (!(wmPtr->flags & WM_NEVER_MAPPED)) {
+		XSetIconName(winPtr->display, winPtr->window, wmPtr->iconName);
+	    }
+	}
+    } else if ((c == 'i') && (strncmp(argv[1], "iconposition", length) == 0)
+	    && (length >= 5)) {
+	int x, y;
+
+	if ((argc != 3) && (argc != 5)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " iconposition window ?x y?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->hints.flags & IconPositionHint) {
+		sprintf(interp->result, "%d %d", wmPtr->hints.icon_x,
+			wmPtr->hints.icon_y);
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    wmPtr->hints.flags &= ~IconPositionHint;
+	} else {
+	    if ((Tcl_GetInt(interp, argv[3], &x) != TCL_OK)
+		    || (Tcl_GetInt(interp, argv[4], &y) != TCL_OK)){
+		return TCL_ERROR;
+	    }
+	    wmPtr->hints.icon_x = x;
+	    wmPtr->hints.icon_y = y;
+	    wmPtr->hints.flags |= IconPositionHint;
+	}
+    } else if ((c == 'i') && (strncmp(argv[1], "iconwindow", length) == 0)
+	    && (length >= 5)) {
+	Tk_Window tkwin2;
+	WmInfo *wmPtr2;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " iconwindow window ?pathName?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->icon != NULL) {
+		interp->result = Tk_PathName(wmPtr->icon);
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[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 {
+	    tkwin2 = Tk_NameToWindow(interp, argv[3], tkwin);
+	    if (tkwin2 == NULL) {
+		return TCL_ERROR;
+	    }
+	    if (!Tk_IsTopLevel(tkwin2)) {
+		Tcl_AppendResult(interp, "can't use ", argv[3],
+			" as icon window: not at top level", (char *) NULL);
+		return TCL_ERROR;
+	    }
+	    wmPtr2 = ((TkWindow *) tkwin2)->wmInfoPtr;
+	    if (wmPtr2->iconFor != NULL) {
+		Tcl_AppendResult(interp, argv[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);
+	    }
+	}
+    } else if ((c == 'm') && (strncmp(argv[1], "maxsize", length) == 0)
+	    && (length >= 2)) {
+	int width, height;
+	if ((argc != 3) && (argc != 5)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " maxsize window ?width height?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    sprintf(interp->result, "%d %d", wmPtr->maxWidth,
+		    wmPtr->maxHeight);
+	    return TCL_OK;
+	}
+	if ((Tcl_GetInt(interp, argv[3], &width) != TCL_OK)
+		|| (Tcl_GetInt(interp, argv[4], &height) != TCL_OK)) {
+	    return TCL_ERROR;
+	}
+	wmPtr->maxWidth = width;
+	wmPtr->maxHeight = height;
+	wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
+	goto updateGeom;
+    } else if ((c == 'm') && (strncmp(argv[1], "minsize", length) == 0)
+	    && (length >= 2)) {
+	int width, height;
+	if ((argc != 3) && (argc != 5)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		   argv[0], " minsize window ?width height?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    sprintf(interp->result, "%d %d", wmPtr->minWidth,
+		    wmPtr->minHeight);
+	    return TCL_OK;
+	}
+	if ((Tcl_GetInt(interp, argv[3], &width) != TCL_OK)
+		|| (Tcl_GetInt(interp, argv[4], &height) != TCL_OK)) {
+	    return TCL_ERROR;
+	}
+	wmPtr->minWidth = width;
+	wmPtr->minHeight = height;
+	wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
+	goto updateGeom;
+    } else if ((c == 'o')
+	    && (strncmp(argv[1], "overrideredirect", length) == 0)) {
+	int boolean;
+	XSetWindowAttributes atts;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " overrideredirect window ?boolean?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (Tk_Attributes((Tk_Window) winPtr)->override_redirect) {
+		interp->result = "1";
+	    } else {
+		interp->result = "0";
+	    }
+	    return TCL_OK;
+	}
+	if (Tcl_GetBoolean(interp, argv[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;
+    } else if ((c == 'p') && (strncmp(argv[1], "positionfrom", length) == 0)
+	    && (length >= 2)) {
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " positionfrom window ?user/program?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->sizeHintsFlags & USPosition) {
+		interp->result = "user";
+	    } else if (wmPtr->sizeHintsFlags & PPosition) {
+		interp->result = "program";
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    wmPtr->sizeHintsFlags &= ~(USPosition|PPosition);
+	} else {
+	    c = argv[3][0];
+	    length = strlen(argv[3]);
+	    if ((c == 'u') && (strncmp(argv[3], "user", length) == 0)) {
+		wmPtr->sizeHintsFlags &= ~PPosition;
+		wmPtr->sizeHintsFlags |= USPosition;
+	    } else if ((c == 'p') &&
+		    (strncmp(argv[3], "program", length) == 0)) {
+		wmPtr->sizeHintsFlags &= ~USPosition;
+		wmPtr->sizeHintsFlags |= PPosition;
+	    } else {
+		Tcl_AppendResult(interp, "bad argument \"", argv[3],
+			"\": must be program or user", (char *) NULL);
+		return TCL_ERROR;
+	    }
+	}
+	wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
+	goto updateGeom;
+    } else if ((c == 'p') && (strncmp(argv[1], "protocol", length) == 0)
+	    && (length >= 2)) {
+	register ProtocolHandler *protPtr, *prevPtr;
+	Atom protocol;
+	int cmdLength;
+
+	if ((argc < 3) || (argc > 5)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " protocol window ?name? ?command?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 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, argv[3]);
+	if (argc == 4) {
+	    /*
+	     * Return the command to handle a given protocol.
+	     */
+	    for (protPtr = wmPtr->protPtr; protPtr != NULL;
+					   protPtr = protPtr->nextPtr) {
+		if (protPtr->protocol == protocol) {
+		    interp->result = protPtr->command;
+		    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;
+	    }
+	}
+	cmdLength = strlen(argv[4]);
+	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, argv[4]);
+	}
+    } else if ((c == 'r') && (strncmp(argv[1], "resizable", length) == 0)) {
+	int width, height;
+
+	if ((argc != 3) && (argc != 5)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " resizable window ?width height?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    sprintf(interp->result, "%d %d",
+		    (wmPtr->flags  & WM_WIDTH_NOT_RESIZABLE) ? 0 : 1,
+		    (wmPtr->flags  & WM_HEIGHT_NOT_RESIZABLE) ? 0 : 1);
+	    return TCL_OK;
+	}
+	if ((Tcl_GetBoolean(interp, argv[3], &width) != TCL_OK)
+		|| (Tcl_GetBoolean(interp, argv[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);
+	}
+	goto updateGeom;
+    } else if ((c == 's') && (strncmp(argv[1], "sizefrom", length) == 0)
+	    && (length >= 2)) {
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " sizefrom window ?user|program?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->sizeHintsFlags & USSize) {
+		interp->result = "user";
+	    } else if (wmPtr->sizeHintsFlags & PSize) {
+		interp->result = "program";
+	    }
+	    return TCL_OK;
+	}
+	if (*argv[3] == '\0') {
+	    wmPtr->sizeHintsFlags &= ~(USSize|PSize);
+	} else {
+	    c = argv[3][0];
+	    length = strlen(argv[3]);
+	    if ((c == 'u') && (strncmp(argv[3], "user", length) == 0)) {
+		wmPtr->sizeHintsFlags &= ~PSize;
+		wmPtr->sizeHintsFlags |= USSize;
+	    } else if ((c == 'p')
+		    && (strncmp(argv[3], "program", length) == 0)) {
+		wmPtr->sizeHintsFlags &= ~USSize;
+		wmPtr->sizeHintsFlags |= PSize;
+	    } else {
+		Tcl_AppendResult(interp, "bad argument \"", argv[3],
+			"\": must be program or user", (char *) NULL);
+		return TCL_ERROR;
+	    }
+	}
+	wmPtr->flags |= WM_UPDATE_SIZE_HINTS;
+	goto updateGeom;
+    } else if ((c == 's') && (strncmp(argv[1], "state", length) == 0)
+	    && (length >= 2)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " state window\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (wmPtr->iconFor != NULL) {
+	    interp->result = "icon";
+	} else {
+	    switch (wmPtr->hints.initial_state) {
+		case NormalState:
+		    interp->result = "normal";
+		    break;
+		case IconicState:
+		    interp->result = "iconic";
+		    break;
+		case WithdrawnState:
+		    interp->result = "withdrawn";
+		    break;
+		case ZoomState:
+		    interp->result = "zoomed";
+		    break;
+	    }
+	}
+    } else if ((c == 't') && (strncmp(argv[1], "title", length) == 0)
+	    && (length >= 2)) {
+	if (argc > 4) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " title window ?newTitle?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    interp->result = (wmPtr->titleUid != NULL) ? wmPtr->titleUid
+		: winPtr->nameUid;
+	    return TCL_OK;
+	} else {
+	    wmPtr->titleUid = Tk_GetUid(argv[3]);
+	    if (!(wmPtr->flags & WM_NEVER_MAPPED) && !Tk_IsEmbedded(winPtr)) {
+		TkSetWMName(winPtr, wmPtr->titleUid);
+	    }
+	}
+    } else if ((c == 't') && (strncmp(argv[1], "transient", length) == 0)
+	    && (length >= 3)) {
+	Tk_Window master;
+
+	if ((argc != 3) && (argc != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " transient window ?master?\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    if (wmPtr->master != None) {
+		interp->result = wmPtr->masterWindowName;
+	    }
+	    return TCL_OK;
+	}
+	if (argv[3][0] == '\0') {
+	    wmPtr->master = None;
+	    if (wmPtr->masterWindowName != NULL) {
+		ckfree(wmPtr->masterWindowName);
+	    }
+	    wmPtr->masterWindowName = NULL;
+	    wmPtr->style = documentProc;
+	} else {
+	    master = Tk_NameToWindow(interp, argv[3], tkwin);
+	    if (master == NULL) {
+		return TCL_ERROR;
+	    }
+	    Tk_MakeWindowExist(master);
+	    wmPtr->master = Tk_WindowId(master);
+	    wmPtr->masterWindowName = ckalloc((unsigned) (strlen(argv[3])+1));
+	    strcpy(wmPtr->masterWindowName, argv[3]);
+	    wmPtr->style = plainDBox;
+	}
+    } else if ((c == 'w') && (strncmp(argv[1], "withdraw", length) == 0)) {
+	if (argc != 3) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " withdraw window\"", (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (wmPtr->iconFor != NULL) {
+	    Tcl_AppendResult(interp, "can't withdraw ", argv[2],
+		    ": it is an icon for ", Tk_PathName(wmPtr->iconFor),
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	TkpWmSetState(winPtr, WithdrawnState);
+    } else {
+	Tcl_AppendResult(interp, "unknown or ambiguous option \"", argv[1],
+		"\": must be aspect, client, command, deiconify, ",
+		"focusmodel, frame, geometry, grid, group, iconbitmap, ",
+		"iconify, iconmask, iconname, iconposition, ",
+		"iconwindow, maxsize, minsize, overrideredirect, ",
+		"positionfrom, protocol, resizable, sizefrom, state, title, ",
+		"transient, or withdraw",
+		(char *) NULL);
+	return TCL_ERROR;
+    }
+    return TCL_OK;
+
+    updateGeom:
+    if (!(wmPtr->flags & (WM_UPDATE_PENDING|WM_NEVER_MAPPED))) {
+	Tk_DoWhenIdle(UpdateGeometryInfo, (ClientData) winPtr);
+	wmPtr->flags |= WM_UPDATE_PENDING;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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;
+    register 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;
+    register 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. */
+{
+    register 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. */
+{
+    register TkWindow *winPtr = (TkWindow *) clientData;
+    register 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)
+{
+    register 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
+ *	interp->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. */
+{
+    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+    int x, y, width, height, flags;
+    char *end;
+    register char *p = string;
+
+    /*
+     * The leading "=" is optional.
+     */
+
+    if (*p == '=') {
+	p++;
+    }
+
+    /*
+     * Parse the width and height, if they are present.  Don't
+     * actually update any of the fields of wmPtr until we've
+     * successfully parsed the entire geometry string.
+     */
+
+    width = wmPtr->width;
+    height = wmPtr->height;
+    x = wmPtr->x;
+    y = wmPtr->y;
+    flags = wmPtr->flags;
+    if (isdigit(UCHAR(*p))) {
+	width = strtoul(p, &end, 10);
+	p = end;
+	if (*p != 'x') {
+	    goto error;
+	}
+	p++;
+	if (!isdigit(UCHAR(*p))) {
+	    goto error;
+	}
+	height = strtoul(p, &end, 10);
+	p = end;
+    }
+
+    /*
+     * Parse the X and Y coordinates, if they are present.
+     */
+
+    if (*p != '\0') {
+	flags &= ~(WM_NEGATIVE_X | WM_NEGATIVE_Y);
+	if (*p == '-') {
+	    flags |= WM_NEGATIVE_X;
+	} else if (*p != '+') {
+	    goto error;
+	}
+	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;
+    register 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 {
+		    
+		    /*
+		     * NOTE: Here we should handle
+		     * out of process embedding.
+		     */
+		    
+		    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;
+    register 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;
+
+    /*
+     * 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 = TkMacGetXWindow(whichWin);
+    winPtr = (TkWindow *) Tk_IdToWindow(tkDisplayList->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) */
+{
+    register 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;
+    register WmInfo *wmPtr = winPtr->wmInfoPtr;
+
+    if (!(winPtr->flags & TK_TOP_LEVEL)) {
+	panic("Tk_MoveToplevelWindow called with non-toplevel window");
+    }
+    wmPtr->x = x;
+    wmPtr->y = y;
+    wmPtr->flags |= WM_MOVE_PENDING;
+    wmPtr->flags &= ~(WM_NEGATIVE_X|WM_NEGATIVE_Y);
+    if ((wmPtr->sizeHintsFlags & (USPosition|PPosition)) == 0) {
+	wmPtr->sizeHintsFlags |= USPosition;
+	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);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkWmProtocolEventProc --
+ *
+ *	This procedure is called by the Tk_HandleEvent whenever a
+ *	ClientMessage event arrives whose type is "WM_PROTOCOLS".
+ *	This procedure handles the message from the window manager
+ *	in an appropriate fashion.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Depends on what sort of handler, if any, was set up for the
+ *	protocol.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkWmProtocolEventProc(
+    TkWindow *winPtr,		/* Window to which the event was sent. */
+    XEvent *eventPtr)		/* X event. */
+{
+    WmInfo *wmPtr;
+    register ProtocolHandler *protPtr;
+    Tcl_Interp *interp;
+    Atom protocol;
+    int result;
+
+    wmPtr = winPtr->wmInfoPtr;
+    if (wmPtr == NULL) {
+	return;
+    }
+    protocol = (Atom) eventPtr->xclient.data.l[0];
+    for (protPtr = wmPtr->protPtr; protPtr != NULL;
+				   protPtr = protPtr->nextPtr) {
+	if (protocol == protPtr->protocol) {
+	    Tcl_Preserve((ClientData) protPtr);
+            interp = protPtr->interp;
+            Tcl_Preserve((ClientData) interp);
+	    result = Tcl_GlobalEval(interp, protPtr->command);
+	    if (result != TCL_OK) {
+		Tcl_AddErrorInfo(interp, "\n    (command for \"");
+		Tcl_AddErrorInfo(interp,
+			Tk_GetAtomName((Tk_Window) winPtr, protocol));
+		Tcl_AddErrorInfo(interp, "\" window manager protocol)");
+		Tk_BackgroundError(interp);
+	    }
+            Tcl_Release((ClientData) interp);
+	    Tcl_Release((ClientData) protPtr);
+	    return;
+	}
+    }
+
+    /*
+     * No handler was present for this protocol.  If this is a
+     * WM_DELETE_WINDOW message then just destroy the window.
+     */
+
+    if (protocol == Tk_InternAtom((Tk_Window) winPtr, "WM_DELETE_WINDOW")) {
+	Tk_DestroyWindow((Tk_Window) winPtr);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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;
+    WindowPeek macWindow, otherMacWindow, frontWindow;
+
+    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 = (WindowPeek) TkMacGetDrawablePort(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 = (WindowPeek) TkMacGetDrawablePort(otherPtr->window);
+    } else {
+	otherMacWindow = NULL;
+    }
+	
+    frontWindow = (WindowPeek) FrontWindow();
+    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((WindowPtr) macWindow);
+	    } else {
+		SelectWindow((WindowPtr)  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 &&
+		    frontWindow->nextWindow != otherMacWindow) {
+		frontWindow = frontWindow->nextWindow;
+	    }
+	    if (frontWindow != NULL) {
+		SendBehind((WindowPtr) macWindow, (WindowPtr) frontWindow);
+	    }
+	}
+    } else {
+	/*
+	 * Send behind.  If it was in front find another window to make active.
+	 */
+	if (macWindow == frontWindow) {
+	    if (macWindow->nextWindow != NULL) {
+		SelectWindow((WindowPtr)  macWindow->nextWindow);
+	    }
+	}
+	SendBehind((WindowPtr) macWindow, (WindowPtr) 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.
+	 */
+		
+	if (((tcl_macQdPtr->screenBits.bounds.right - defaultX) < 30) ||
+		((tcl_macQdPtr->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;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacResizable --
+ *
+ *	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
+TkMacResizable(
+    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;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacGrowToplevel --
+ *
+ *	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
+TkMacGrowToplevel(
+    WindowPtr whichWindow,
+    Point start)
+{
+    Point where = start;
+
+    GlobalToLocal(&where);
+    if (where.h > (whichWindow->portRect.right - 16) &&
+	    where.v > (whichWindow->portRect.bottom - 16)) {
+		
+	Window window;
+	TkWindow *winPtr;
+	WmInfo *wmPtr;
+	Rect bounds;
+	long growResult;
+
+	window = TkMacGetXWindow(whichWindow);
+	winPtr = (TkWindow *) Tk_IdToWindow(tkDisplayList->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(whichWindow);
+	    InvalRect(&whichWindow->portRect);	/* TODO: may not be needed */
+	    TkMacInvalClipRgns(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)
+{
+    Str255  pTitle;
+    GWorldPtr macWin;
+    
+    if (Tk_IsEmbedded(winPtr)) {
+        return;
+    }
+    
+     macWin = TkMacGetDrawablePort(winPtr->window);
+	
+    strcpy((char *) pTitle + 1, titleUid);
+    pTitle[0] = strlen(titleUid);
+    SetWTitle((WindowPtr) macWin, pTitle);
+}
+
+void
+TkGenWMDestroyEvent(
+    Tk_Window tkwin)
+{
+    XEvent event;
+    
+    event.xany.serial = Tk_Display(tkwin)->request;
+    event.xany.send_event = False;
+    event.xany.display = Tk_Display(tkwin);
+	
+    event.xclient.window = Tk_WindowId(tkwin);
+    event.xclient.type = ClientMessage;
+    event.xclient.message_type = Tk_InternAtom(tkwin, "WM_PROTOCOLS");
+    event.xclient.format = 32;
+    event.xclient.data.l[0] = Tk_InternAtom(tkwin, "WM_DELETE_WINDOW");
+    Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkGenWMConfigureEvent --
+ *
+ *	Generate a ConfigureNotify event for Tk.  Depending on the 
+ *	value of flag the values of width/height, x/y, or both may
+ *	be changed.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	A ConfigureNotify event is sent to Tk.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkGenWMConfigureEvent(
+    Tk_Window tkwin,
+    int x,
+    int y,
+    int width,
+    int height,
+    int flags)
+{
+    XEvent event;
+    WmInfo *wmPtr;
+    TkWindow *winPtr = (TkWindow *) tkwin;
+    
+    if (tkwin == NULL) {
+	return;
+    }
+    
+    event.type = ConfigureNotify;
+    event.xconfigure.serial = Tk_Display(tkwin)->request;
+    event.xconfigure.send_event = False;
+    event.xconfigure.display = Tk_Display(tkwin);
+    event.xconfigure.event = Tk_WindowId(tkwin);
+    event.xconfigure.window = Tk_WindowId(tkwin);
+    event.xconfigure.border_width = winPtr->changes.border_width;
+    event.xconfigure.override_redirect = winPtr->atts.override_redirect;
+    if (winPtr->changes.stack_mode == Above) {
+	event.xconfigure.above = winPtr->changes.sibling;
+    } else {
+	event.xconfigure.above = None;
+    }
+
+    if (flags & TK_LOCATION_CHANGED) {
+	event.xconfigure.x = x;
+	event.xconfigure.y = y;
+    } else {
+	event.xconfigure.x = Tk_X(tkwin);
+	event.xconfigure.y = Tk_Y(tkwin);
+	x = Tk_X(tkwin);
+	y = Tk_Y(tkwin);
+    }
+    if (flags & TK_SIZE_CHANGED) {
+	event.xconfigure.width = width;
+	event.xconfigure.height = height;
+    } else {
+	event.xconfigure.width = Tk_Width(tkwin);
+	event.xconfigure.height = Tk_Height(tkwin);
+	width = Tk_Width(tkwin);
+	height = Tk_Height(tkwin);
+    }
+    
+    Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
+    
+    /*
+     * Update window manager information.
+     */
+    if (Tk_IsTopLevel(winPtr)) {
+	wmPtr = winPtr->wmInfoPtr;
+	if (flags & TK_LOCATION_CHANGED) {
+	    wmPtr->x = x;
+	    wmPtr->y = y;
+	    wmPtr->flags &= ~(WM_NEGATIVE_X | WM_NEGATIVE_Y);
+	}
+	if ((flags & TK_SIZE_CHANGED) && 
+		((width != Tk_Width(tkwin)) || (height != Tk_Height(tkwin)))) {
+	    if ((wmPtr->width == -1) && (width == winPtr->reqWidth)) {
+		/*
+		 * Don't set external width, since the user didn't change it
+		 * from what the widgets asked for.
+		 */
+	    } else {
+		if (wmPtr->gridWin != NULL) {
+		    wmPtr->width = wmPtr->reqGridWidth
+			+ (width - winPtr->reqWidth)/wmPtr->widthInc;
+		    if (wmPtr->width < 0) {
+			wmPtr->width = 0;
+		    }
+		} else {
+		    wmPtr->width = width;
+		}
+	    }
+	    if ((wmPtr->height == -1) && (height == winPtr->reqHeight)) {
+		/*
+		 * Don't set external height, since the user didn't change it
+		 * from what the widgets asked for.
+		 */
+	    } else {
+		if (wmPtr->gridWin != NULL) {
+		    wmPtr->height = wmPtr->reqGridHeight
+			+ (height - winPtr->reqHeight)/wmPtr->heightInc;
+		    if (wmPtr->height < 0) {
+			wmPtr->height = 0;
+		    }
+		} else {
+		    wmPtr->height = height;
+		}
+	    }
+	    wmPtr->configWidth = width;
+	    wmPtr->configHeight = height;
+	}
+    }
+    
+    /*
+     * Now set up the changes structure.  Under X we wait for the
+     * ConfigureNotify to set these values.  On the Mac we know imediatly that
+     * this is what we want - so we just set them.  However, we need to
+     * make sure the windows clipping region is marked invalid so the
+     * change is visable to the subwindow.
+     */
+    winPtr->changes.x = x;
+    winPtr->changes.y = y;
+    winPtr->changes.width = width;
+    winPtr->changes.height = height;
+    TkMacInvalClipRgns(winPtr);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacGetXWindow --
+ *
+ *	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
+TkMacGetXWindow(
+    WindowRef macWinPtr)
+{
+    register 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);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacZoomToplevel --
+ *
+ *	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
+TkMacZoomToplevel(
+    WindowPtr 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;
+
+    SetPort(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 = TkMacGetXWindow(whichWindow);
+    tkwin = Tk_IdToWindow(tkDisplayList->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) {
+	    Rect zoomRect = tcl_macQdPtr->screenBits.bounds;
+	    InsetRect(&zoomRect, 60, 60);
+	    SetWindowStandardState(whichWindow, &zoomRect);
+	    zoomPart = inZoomOut;
+	} else {
+	    zoomPart = inZoomIn;
+	}
+    }
+    
+    ZoomWindow(whichWindow, zoomPart, false);
+    InvalRect(&whichWindow->portRect);
+    TkMacInvalClipRgns((TkWindow *) tkwin);
+
+    LocalToGlobal(&location);
+    TkMacWindowOffset(whichWindow, &xOffset, &yOffset);
+    location.h -= xOffset;
+    location.v -= yOffset;
+    TkGenWMConfigureEvent(tkwin, location.h, location.v, 
+	    whichWindow->portRect.right - whichWindow->portRect.left,
+	    whichWindow->portRect.bottom - whichWindow->portRect.top,
+	    TK_BOTH_CHANGED);
+    return true;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkUnsupported1Cmd --
+ *
+ *	This procedure is invoked to process the "unsupported1" 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. */
+    char **argv)		/* Argument strings. */
+{
+    Tk_Window tkwin = (Tk_Window) clientData;
+    TkWindow *winPtr;
+    register WmInfo *wmPtr;
+    int c;
+    size_t length;
+
+    if (argc < 3) {
+	wrongNumArgs:
+	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 != 4)) {
+	    Tcl_AppendResult(interp, "wrong # arguments: must be \"",
+		    argv[0], " style window ?windowStyle?\"",
+		    (char *) NULL);
+	    return TCL_ERROR;
+	}
+	if (argc == 3) {
+	    switch (wmPtr->style) {
+		case noGrowDocProc:
+		case documentProc:
+		    interp->result = "documentProc";
+		    break;
+		case dBoxProc:
+		    interp->result = "dBoxProc";
+		    break;
+		case plainDBox:
+		    interp->result = "plainDBox";
+		    break;
+		case altDBoxProc:
+		    interp->result = "altDBoxProc";
+		    break;
+		case movableDBoxProc:
+		    interp->result = "movableDBoxProc";
+		    break;
+		case zoomDocProc:
+		case zoomNoGrow:
+		    interp->result = "zoomDocProc";
+		    break;
+		case rDocProc:
+		    interp->result = "rDocProc";
+		    break;
+		case floatProc:
+		case floatGrowProc:
+		    interp->result = "floatProc";
+		    break;
+		case floatZoomProc:
+		case floatZoomGrowProc:
+		    interp->result = "floatZoomProc";
+		    break;
+		case floatSideProc:
+		case floatSideGrowProc:
+		    interp->result = "floatSideProc";
+		    break;
+		case floatSideZoomProc:
+		case floatSideZoomGrowProc:
+		    interp->result = "floatSideZoomProc";
+		    break;
+		default:
+		   panic("invalid style");
+	    }
+	    return TCL_OK;
+	}
+	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 {
+	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;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacMakeRealWindowExist --
+ *
+ *	This function finally creates the real Macintosh window that
+ *	the Mac actually understands.  
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	A new Macintosh toplevel is created.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void 
+TkMacMakeRealWindowExist(
+    TkWindow *winPtr)	/* Tk window. */
+{
+    WmInfo *wmPtr = winPtr->wmInfoPtr;
+    WindowRef newWindow = NULL;
+    MacDrawable *macWin;
+    Rect geometry;
+    Tcl_HashEntry *valueHashPtr;
+    int new;
+    TkMacWindowList *listPtr;
+
+    if (TkMacHostToplevelExists(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) {
+	    TkMacMakeRealWindowExist(contWinPtr->privatePtr->toplevel->winPtr);
+	    macWin->flags |= TK_HOST_EXISTS;
+	    return;
+	} else {
+	    panic("TkMacMakeRealWindowExist could not find container");
+	}
+
+	/*
+	 * NOTE: Here we should handle out of process embedding.
+	 */
+	
+    }
+    
+    InitialWindowBounds(winPtr, &geometry);
+	
+    newWindow = NewCWindow(NULL, &geometry, "\ptemp", false, 
+	    (short) wmPtr->style, (WindowRef) -1, true, 0);
+    if (newWindow == NULL) {
+	panic("couldn't allocate new Mac window");
+    }
+    
+    /*
+     * Add this window to the list of toplevel windows.
+     */
+    
+    listPtr = (TkMacWindowList *) ckalloc(sizeof(TkMacWindowList));
+    listPtr->nextPtr = tkMacWindowListPtr;
+    listPtr->winPtr = winPtr;
+    tkMacWindowListPtr = listPtr;
+    
+    macWin->portPtr = (GWorldPtr) newWindow;
+    MacMoveWindow(newWindow, (int) geometry.left, (int) geometry.top);
+    SetPort((GrafPtr) 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;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacRegisterOffScreenWindow --
+ *
+ *	This function adds the passed in Off Screen Port to the
+ *	hash table that maps Mac windows to root X windows.  
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	An entry is added to the windowTable hash table.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void 
+TkMacRegisterOffScreenWindow(
+    Window window,	/* Window structure. */
+    GWorldPtr portPtr)	/* Pointer to a Mac GWorld. */
+{
+    WindowRef newWindow = NULL;
+    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);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacUnregisterMacWindow --
+ *
+ *	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 
+TkMacUnregisterMacWindow(
+    GWorldPtr portPtr)	/* Pointer to a Mac GWorld. */
+{
+    if (!windowHashInit) {
+	panic("TkMacUnregisterMacWindow: unmapping before inited");;
+    }
+    Tcl_DeleteHashEntry(Tcl_FindHashEntry(&windowTable,
+	(char *) portPtr));
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacSetScrollbarGrow --
+ *
+ *	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 
+TkMacSetScrollbarGrow(
+    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;
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkMacGetScrollbarGrowWindow --
+ *
+ *	Tests to see if a given window's toplevel window contains a
+ *	scrollbar that will draw the GrowIcon for the window.
+ *
+ * Results:
+ *	Boolean value.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+TkWindow * 
+TkMacGetScrollbarGrowWindow(
+    TkWindow *winPtr)	/* Tk window. */
+{
+    TkWindow *scrollWinPtr;
+    
+    if (winPtr == NULL) {
+	return NULL;
+    }
+    scrollWinPtr =
+	winPtr->privatePtr->toplevel->winPtr->wmInfoPtr->scrollWinPtr;
+    if (winPtr != NULL) {
+	/*
+	 * We need to confirm the window exists.
+	 */
+	if ((Tk_Window) scrollWinPtr !=
+		Tk_IdToWindow(winPtr->display, winPtr->window)) {
+	    scrollWinPtr = NULL;
+	}
+    }
+    return scrollWinPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * 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;
+    GWorldPtr macWin;
+    
+    wmPtr->hints.initial_state = state;
+    if (wmPtr->flags & WM_NEVER_MAPPED) {
+	return;
+    }
+
+    macWin = TkMacGetDrawablePort(winPtr->window);
+
+    if (state == WithdrawnState) {
+	Tk_UnmapWindow((Tk_Window) winPtr);
+    } else if (state == IconicState) {
+	Tk_UnmapWindow((Tk_Window) winPtr);
+#ifdef HAVE_APPEARANCE
+	if (HaveAppearance()) {
+	    /*
+	     * 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((WindowRef) macWin)) {
+		ShowWindow((WindowRef) macWin);
+		CollapseWindow((WindowPtr) macWin, true);
+	    }
+	}
+#endif
+    } else if (state == NormalState) {
+	Tk_MapWindow((Tk_Window) winPtr);
+#ifdef HAVE_APPEARANCE
+	if (HaveAppearance()) {
+	    CollapseWindow((WindowPtr) macWin, false);
+	}
+#endif
+    } else if (state == ZoomState) {
+	/* TODO: need to support zoomed windows */
+    }
+}
+/*
+ *----------------------------------------------------------------------
+ *
+ * HaveAppearance --
+ *
+ *	Determine if the appearance manager is available on this Mac.
+ *	We cache the result so future calls are fast.
+ *
+ * Results:
+ *	True if the appearance manager is present, false otherwise.
+ *
+ * Side effects:
+ *	Calls Gestalt to query system values.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+HaveAppearance()
+{
+    static initialized = false;
+    static int haveAppearance = false;
+    long response = 0;
+    OSErr err = noErr;
+    
+#ifdef HAVE_APPEARANCE
+    if (!initialized) {
+	err = Gestalt(gestaltAppearanceAttr, &response);
+	if (err == noErr) {
+	    haveAppearance = true;
+	}
+    }
+#endif
+
+    return haveAppearance;
+}