/nx-3.5.0/nx-X11/programs/Xserver/hw/nxagent/NXwindow.c

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#ifdef NXAGENT_UPGRADE

#include "X/NXwindow.c"

#else

/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/.         */
/*                                                                        */
/* NXAGENT, NX protocol compression and NX extensions to this software    */
/* are copyright of NoMachine. Redistribution and use of the present      */
/* software is allowed according to terms specified in the file LICENSE   */
/* which comes in the source distribution.                                */
/*                                                                        */
/* Check http://www.nomachine.com/licensing.html for applicability.       */
/*                                                                        */
/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/**************************************************************************/

/*

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts,

			All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

*/

/****************************************************************
*                                                               *
*    Copyright (c) Digital Equipment Corporation, 1991, 1997    *
*                                                               *
*   All Rights Reserved.  Unpublished rights  reserved  under   *
*   the copyright laws of the United States.                    *
*                                                               *
*   The software contained on this media  is  proprietary  to   *
*   and  embodies  the  confidential  technology  of  Digital   *
*   Equipment Corporation.  Possession, use,  duplication  or   *
*   dissemination of the software and media is authorized only  *
*   pursuant to a valid written license from Digital Equipment  *
*   Corporation.                                                *
*                                                               *
*   RESTRICTED RIGHTS LEGEND   Use, duplication, or disclosure  *
*   by the U.S. Government is subject to restrictions  as  set  *
*   forth in Subparagraph (c)(1)(ii)  of  DFARS  252.227-7013,  *
*   or  in  FAR 52.227-19, as applicable.                       *
*                                                               *
*****************************************************************/

#include "misc.h"
#include "scrnintstr.h"
#include "os.h"
#include "regionstr.h"
#include "validate.h"
#include "windowstr.h"
#include "input.h"
#include "resource.h"
#include "colormapst.h"
#include "cursorstr.h"
#include "dixstruct.h"
#include "gcstruct.h"
#include "servermd.h"
#include "selection.h"
#ifdef PANORAMIX
#include "../../Xext/panoramiX.h"
#include "../../Xext/panoramiXsrv.h"
#endif
#include "dixevents.h"
#include "globals.h"

#ifdef XAPPGROUP
#include "Xagsrv.h"
#endif
#ifdef XCSECURITY
#define _SECURITY_SERVER
#include "security.h"
#endif

#include "Screen.h"
#include "Options.h"
#include "Atoms.h"
#include "Clipboard.h"
#include "Splash.h"
#include "Rootless.h"
#include "Composite.h"
#include "Drawable.h"
#include "Colormap.h"

#if defined(NEED_SCREEN_REGIONS)
#define REGION_PTR(pScreen,pWin) \
    register ScreenPtr pScreen = pWin->drawable.pScreen;
#else
#define REGION_PTR(pScreen,pWin) /* nothing */
#endif

extern Bool nxagentWMIsRunning;
extern Bool nxagentScreenTrap;

/******
 * Window stuff for server 
 *
 *    CreateRootWindow, CreateWindow, ChangeWindowAttributes,
 *    GetWindowAttributes, DeleteWindow, DestroySubWindows,
 *    HandleSaveSet, ReparentWindow, MapWindow, MapSubWindows,
 *    UnmapWindow, UnmapSubWindows, ConfigureWindow, CirculateWindow,
 *
 ******/

int screenIsSaved = SCREEN_SAVER_OFF;

ScreenSaverStuffRec savedScreenInfo[MAXSCREENS];

#if 0
extern void DeleteWindowFromAnyEvents();
extern Mask EventMaskForClient();
extern void WindowHasNewCursor();
extern void RecalculateDeliverableEvents();
#endif

static Bool TileScreenSaver(
#if NeedFunctionPrototypes
    int /*i*/,
    int /*kind*/
#endif
);


#define INPUTONLY_LEGAL_MASK (CWWinGravity | CWEventMask | \
			      CWDontPropagate | CWOverrideRedirect | CWCursor )

#define BOXES_OVERLAP(b1, b2) \
      (!( ((b1)->x2 <= (b2)->x1)  || \
	( ((b1)->x1 >= (b2)->x2)) || \
	( ((b1)->y2 <= (b2)->y1)) || \
	( ((b1)->y1 >= (b2)->y2)) ) )

#define RedirectSend(pWin) \
    ((pWin->eventMask|wOtherEventMasks(pWin)) & SubstructureRedirectMask)

#define SubSend(pWin) \
    ((pWin->eventMask|wOtherEventMasks(pWin)) & SubstructureNotifyMask)

#define StrSend(pWin) \
    ((pWin->eventMask|wOtherEventMasks(pWin)) & StructureNotifyMask)

#define SubStrSend(pWin,pParent) (StrSend(pWin) || SubSend(pParent))


/*
 * Set here the required log level.
 */

#define PANIC
#define WARNING
#undef  TEST
#undef  DEBUG

int numSaveUndersViewable = 0;
int deltaSaveUndersViewable = 0;

WindowPtr nxagentRootTileWindow;

/*
 * This block used the DEBUG symbol.
 */

#ifdef WINDOW_TREE_DEBUG
/******
 * PrintWindowTree
 *    For debugging only
 ******/

int
PrintChildren(p1, indent)
    WindowPtr p1;
    int indent;
{
    WindowPtr p2;
    int i;

    while (p1)
    {
	p2 = p1->firstChild;
	for (i=0; i<indent; i++) ErrorF( " ");
	ErrorF( "%x\n", p1->drawable.id);
	miPrintRegion(&p1->clipList);
	PrintChildren(p2, indent+4);
	p1 = p1->nextSib;
    }
}

PrintWindowTree()
{
    int i;
    WindowPtr pWin, p1;

    for (i=0; i<screenInfo.numScreens; i++)
    {
	ErrorF( "WINDOW %d\n", i);
	pWin = WindowTable[i];
	miPrintRegion(&pWin->clipList);
	p1 = pWin->firstChild;
	PrintChildren(p1, 4);
    }
}
#endif

int
TraverseTree(pWin, func, data)
    register WindowPtr pWin;
    VisitWindowProcPtr func;
    pointer data;
{
    register int result;
    register WindowPtr pChild;

    if (!(pChild = pWin))
       return(WT_NOMATCH);
    while (1)
    {
	result = (* func)(pChild, data);
	if (result == WT_STOPWALKING)
	    return(WT_STOPWALKING);
	if ((result == WT_WALKCHILDREN) && pChild->firstChild)
	{
	    pChild = pChild->firstChild;
	    continue;
	}
	while (!pChild->nextSib && (pChild != pWin))
	    pChild = pChild->parent;
	if (pChild == pWin)
	    break;
	pChild = pChild->nextSib;
    }
    return(WT_NOMATCH);
}

/*****
 * WalkTree
 *   Walk the window tree, for SCREEN, preforming FUNC(pWin, data) on
 *   each window.  If FUNC returns WT_WALKCHILDREN, traverse the children,
 *   if it returns WT_DONTWALKCHILDREN, dont.  If it returns WT_STOPWALKING
 *   exit WalkTree.  Does depth-first traverse.
 *****/

int
WalkTree(pScreen, func, data)
    ScreenPtr pScreen;
    VisitWindowProcPtr func;
    pointer data;
{
    return(TraverseTree(WindowTable[pScreen->myNum], func, data));
}

/* hack for forcing backing store on all windows */
int	defaultBackingStore = NotUseful;
/* hack to force no backing store */
Bool	disableBackingStore = FALSE;
Bool	enableBackingStore = FALSE;
/* hack to force no save unders */
Bool	disableSaveUnders = FALSE;

static void
#if NeedFunctionPrototypes
SetWindowToDefaults(register WindowPtr pWin)
#else
SetWindowToDefaults(pWin)
    register WindowPtr pWin;
#endif
{
    pWin->prevSib = NullWindow;
    pWin->firstChild = NullWindow;
    pWin->lastChild = NullWindow;

    pWin->valdata = (ValidatePtr)NULL;
    pWin->optional = (WindowOptPtr)NULL;
    pWin->cursorIsNone = TRUE;

    pWin->backingStore = NotUseful;
    pWin->DIXsaveUnder = FALSE;
    pWin->backStorage = (pointer) NULL;

    pWin->mapped = FALSE;	    /* off */
    pWin->realized = FALSE;	/* off */
    pWin->viewable = FALSE;
    pWin->visibility = VisibilityNotViewable;
    pWin->overrideRedirect = FALSE;
    pWin->saveUnder = FALSE;

    pWin->bitGravity = ForgetGravity;
    pWin->winGravity = NorthWestGravity;

    pWin->eventMask = 0;
    pWin->deliverableEvents = 0;
    pWin->dontPropagate = 0;
    pWin->forcedBS = FALSE;
#ifdef NEED_DBE_BUF_BITS
    pWin->srcBuffer = DBE_FRONT_BUFFER;
    pWin->dstBuffer = DBE_FRONT_BUFFER;
#endif
}

void nxagentClearSplash(WindowPtr pW)
{
    int w, h;
    ScreenPtr pScreen;

    w = pW->drawable.width;
    h = pW->drawable.height;

    pScreen = pW->drawable.pScreen;

    if (pW->backgroundState == BackgroundPixmap)
    {
      (*pScreen->DestroyPixmap)(pW->background.pixmap);
    }

    pW->backgroundState = BackgroundPixel;
    pW->background.pixel = nxagentLogoBlack;

    (*pScreen->ChangeWindowAttributes)(pW, CWBackPixmap|CWBackPixel);
}

static void
#if NeedFunctionPrototypes
MakeRootTile(WindowPtr pWin)
#else
MakeRootTile(pWin)
    WindowPtr pWin;
#endif
{
    nxagentRootTileWindow = pWin;
}

WindowPtr
AllocateWindow(pScreen)
    ScreenPtr pScreen;
{
    WindowPtr pWin;
    register char *ptr;
    register DevUnion *ppriv;
    register unsigned *sizes;
    register unsigned size;
    register int i;

    pWin = (WindowPtr)xalloc(pScreen->totalWindowSize);
    if (pWin)
    {
	ppriv = (DevUnion *)(pWin + 1);
	pWin->devPrivates = ppriv;
	sizes = pScreen->WindowPrivateSizes;
	ptr = (char *)(ppriv + pScreen->WindowPrivateLen);
	for (i = pScreen->WindowPrivateLen; --i >= 0; ppriv++, sizes++)
	{
	    if ( (size = *sizes) )
	    {
		ppriv->ptr = (pointer)ptr;
		ptr += size;
	    }
	    else
		ppriv->ptr = (pointer)NULL;
	}
    }
    return pWin;
}

/*****
 * CreateRootWindow
 *    Makes a window at initialization time for specified screen
 *****/

Bool
CreateRootWindow(pScreen)
    ScreenPtr	pScreen;
{
    WindowPtr	pWin;
    BoxRec	box;
    PixmapFormatRec *format;

    pWin = AllocateWindow(pScreen);
    if (!pWin)
	return FALSE;

    savedScreenInfo[pScreen->myNum].pWindow = NULL;
    savedScreenInfo[pScreen->myNum].wid = FakeClientID(0);
    savedScreenInfo[pScreen->myNum].ExternalScreenSaver = NULL;
    screenIsSaved = SCREEN_SAVER_OFF;

    WindowTable[pScreen->myNum] = pWin;

    pWin->drawable.pScreen = pScreen;
    pWin->drawable.type = DRAWABLE_WINDOW;

    pWin->drawable.depth = pScreen->rootDepth;
    for (format = screenInfo.formats;
	 format->depth != pScreen->rootDepth;
	 format++)
	;
    pWin->drawable.bitsPerPixel = format->bitsPerPixel;

    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;

    pWin->parent = NullWindow;
    SetWindowToDefaults(pWin);

    pWin->optional = (WindowOptRec *) xalloc (sizeof (WindowOptRec));
    if (!pWin->optional)
        return FALSE;

    pWin->optional->dontPropagateMask = 0;
    pWin->optional->otherEventMasks = 0;
    pWin->optional->otherClients = NULL;
    pWin->optional->passiveGrabs = NULL;
    pWin->optional->userProps = NULL;
    pWin->optional->backingBitPlanes = ~0L;
    pWin->optional->backingPixel = 0;
#ifdef SHAPE
    pWin->optional->boundingShape = NULL;
    pWin->optional->clipShape = NULL;
#endif
#ifdef XINPUT
    pWin->optional->inputMasks = NULL;
#endif
    pWin->optional->colormap = pScreen->defColormap;
    pWin->optional->visual = pScreen->rootVisual;

    pWin->nextSib = NullWindow;

    pWin->drawable.id = FakeClientID(0);

    pWin->origin.x = pWin->origin.y = 0;
    pWin->drawable.height = pScreen->height;
    pWin->drawable.width = pScreen->width;
    pWin->drawable.x = pWin->drawable.y = 0;

    box.x1 = 0;
    box.y1 = 0;
    box.x2 = pScreen->width;
    box.y2 = pScreen->height;
    REGION_INIT(pScreen, &pWin->clipList, &box, 1);
    REGION_INIT(pScreen, &pWin->winSize, &box, 1);
    REGION_INIT(pScreen, &pWin->borderSize, &box, 1);
    REGION_INIT(pScreen, &pWin->borderClip, &box, 1);

    pWin->drawable.class = InputOutput;
    pWin->optional->visual = pScreen->rootVisual;

    pWin->backgroundState = BackgroundPixel;
    pWin->background.pixel = pScreen->whitePixel;

    pWin->borderIsPixel = TRUE;
    pWin->border.pixel = pScreen->blackPixel;
    pWin->borderWidth = 0;

    if (!AddResource(pWin->drawable.id, RT_WINDOW, (pointer)pWin))
	return FALSE;

    if (disableBackingStore)
    {
      pScreen -> backingStoreSupport = NotUseful;
    }

    if (enableBackingStore)
    {
      pScreen -> backingStoreSupport = Always;
    }

    pScreen->saveUnderSupport = False;

#ifdef DO_SAVE_UNDERS
    if ((pScreen->backingStoreSupport != NotUseful) &&
	(pScreen->saveUnderSupport == NotUseful))
    {
	/*
	 * If the screen has backing-store but no save-unders, let the
	 * clients know we can support save-unders using backing-store.
	 */
	pScreen->saveUnderSupport = USE_DIX_SAVE_UNDERS;
    }
#endif /* DO_SAVE_UNDERS */
		
    if (disableSaveUnders)
	pScreen->saveUnderSupport = NotUseful;

    return TRUE;
}

void
InitRootWindow(pWin)
    WindowPtr pWin;
{
    ScreenPtr pScreen;

    #ifdef TEST
    fprintf(stderr, "InitRootWindow: Called for window at [%p][%ld] with parent [%p].\n",
                (void *) pWin, nxagentWindowPriv(pWin)->window, (void *) pWin -> parent);
    #endif

    if (nxagentOption(Rootless))
    {
      #ifdef TEST
      fprintf(stderr, "InitRootWindow: Assigned agent root to window at [%p][%ld] with parent [%p].\n",
                  (void *) pWin, nxagentWindowPriv(pWin)->window, (void *) pWin -> parent);
      #endif

      nxagentRootlessWindow = pWin;
    }

    pScreen = pWin->drawable.pScreen;

    /*
     * A root window is created for each screen by main
     * and the pointer is saved in WindowTable as in the
     * following snippet:
     *
     * for (i = 0; i < screenInfo.numScreens; i++)
     *          InitRootWindow(WindowTable[i]);
     *
     * Our root window on the real display was already
     * created at the time the screen was opened, so it
     * is unclear how this window (or the other window,
     * if you prefer) fits in the big picture.
     */

    #ifdef TEST
    fprintf(stderr, "InitRootWindow: Going to create window as root at [%p][%ld] with parent [%p].\n",
                (void *) pWin, nxagentWindowPriv(pWin)->window, (void *) pWin -> parent);
    #endif

    if (!(*pScreen->CreateWindow)(pWin))
	return; /* XXX */

    #ifdef TEST
    fprintf(stderr, "InitRootWindow: Created window as root at [%p][%ld] with parent [%p].\n",
                (void *) pWin, nxagentWindowPriv(pWin)->window, (void *) pWin -> parent);
    #endif

    (*pScreen->PositionWindow)(pWin, 0, 0);

    pWin->cursorIsNone = FALSE;
    pWin->optional->cursor = rootCursor;
    rootCursor->refcnt++;
    pWin->backingStore = defaultBackingStore;
    pWin->forcedBS = (defaultBackingStore != NotUseful);

    #ifdef NXAGENT_SPLASH
    /* We SHOULD check for an error value here XXX */
    pWin -> background.pixel = pScreen -> blackPixel;
    (*pScreen->ChangeWindowAttributes)(pWin,
		       CWBackPixel|CWBorderPixel|CWCursor|CWBackingStore);
    #else
    (*pScreen->ChangeWindowAttributes)(pWin,
		       CWBackPixmap|CWBorderPixel|CWCursor|CWBackingStore);
    #endif

    MakeRootTile(pWin);

    /*
     * Map both the root and the default agent window.
     */

    #ifdef TEST
    fprintf(stderr, "InitRootWindow: Mapping default windows.\n");
    #endif

    nxagentInitAtoms(pWin);

    nxagentInitClipboard(pWin);

    nxagentMapDefaultWindows();

    nxagentRedirectDefaultWindows();

    #ifdef NXAGENT_ARTSD
    {
      char artsd_port[10];
      int nPort;
      extern void nxagentPropagateArtsdProperties(ScreenPtr pScreen, char *port);
      nPort = atoi(display) + 7000;
      sprintf(artsd_port,"%d", nPort);
      nxagentPropagateArtsdProperties(pScreen, artsd_port);
    }
    #endif
}

/* Set the region to the intersection of the rectangle and the
 * window's winSize.  The window is typically the parent of the
 * window from which the region came.
 */

void
ClippedRegionFromBox(pWin, Rgn, x, y, w, h)
    register WindowPtr pWin;
    RegionPtr Rgn;
    register int x, y;
    int w, h;
{
    REGION_PTR(pScreen, pWin)
    BoxRec box;

    box = *(REGION_EXTENTS(pScreen, &pWin->winSize));
    /* we do these calculations to avoid overflows */
    if (x > box.x1)
	box.x1 = x;
    if (y > box.y1)
	box.y1 = y;
    x += w;
    if (x < box.x2)
	box.x2 = x;
    y += h;
    if (y < box.y2)
	box.y2 = y;
    if (box.x1 > box.x2)
	box.x2 = box.x1;
    if (box.y1 > box.y2)
	box.y2 = box.y1;
    REGION_RESET(pScreen, Rgn, &box);
    REGION_INTERSECT(pScreen, Rgn, Rgn, &pWin->winSize);
}

WindowPtr
RealChildHead(pWin)
    register WindowPtr pWin;
{
    if (!pWin->parent &&
	(screenIsSaved == SCREEN_SAVER_ON) &&
	(HasSaverWindow (pWin->drawable.pScreen->myNum)))
	return (pWin->firstChild);
    else
	return (NullWindow);
}

/*****
 * CreateWindow
 *    Makes a window in response to client request 
 *****/

WindowPtr
CreateWindow(wid, pParent, x, y, w, h, bw, class, vmask, vlist,
	     depth, client, visual, error)
    Window wid;
    register WindowPtr pParent;
    int x,y;
    unsigned int w, h, bw;
    unsigned int class;
    register Mask vmask;
    XID *vlist;
    int depth;
    ClientPtr client;
    VisualID visual;
    int *error;
{
    register WindowPtr pWin;
    WindowPtr pHead;
    register ScreenPtr pScreen;
    xEvent event;
    int idepth, ivisual;
    Bool fOK;
    DepthPtr pDepth;
    PixmapFormatRec *format;
    register WindowOptPtr ancwopt;

    if (class == CopyFromParent)
	class = pParent->drawable.class;

    if ((class != InputOutput) && (class != InputOnly))
    {
	*error = BadValue;
	client->errorValue = class;
	return NullWindow;
    }

    if ((class != InputOnly) && (pParent->drawable.class == InputOnly))
    {
	*error = BadMatch;
	return NullWindow;
    }

    if ((class == InputOnly) && ((bw != 0) || (depth != 0)))
    {
	*error = BadMatch;
	return NullWindow;
    }

    pScreen = pParent->drawable.pScreen;
    if ((class == InputOutput) && (depth == 0))
	 depth = pParent->drawable.depth;
    ancwopt = pParent->optional;
    if (!ancwopt)
	ancwopt = FindWindowWithOptional(pParent)->optional;
    if (visual == CopyFromParent) {
#ifdef XAPPGROUP
	VisualID ag_visual;

	if (client->appgroup && !pParent->parent &&
	    (ag_visual = XagRootVisual (client)))
	    visual = ag_visual;
	else
#endif
	visual = ancwopt->visual;
    }

    /* Find out if the depth and visual are acceptable for this Screen */
    if ((visual != ancwopt->visual) || (depth != pParent->drawable.depth))
    {
	fOK = FALSE;
	for(idepth = 0; idepth < pScreen->numDepths; idepth++)
	{
	    pDepth = (DepthPtr) &pScreen->allowedDepths[idepth];
	    if ((depth == pDepth->depth) || (depth == 0))
	    {
		for (ivisual = 0; ivisual < pDepth->numVids; ivisual++)
		{
		    if (visual == pDepth->vids[ivisual])
		    {
			fOK = TRUE;
			break;
		    }
		}
	    }
	}
	if (fOK == FALSE)
	{
	    *error = BadMatch;
	    return NullWindow;
	}
    }

    if (((vmask & (CWBorderPixmap | CWBorderPixel)) == 0) &&
	(class != InputOnly) &&
	(depth != pParent->drawable.depth))
    {
	*error = BadMatch;
	return NullWindow;
    }

    if (((vmask & CWColormap) == 0) &&
	(class != InputOnly) &&
	((visual != ancwopt->visual) || (ancwopt->colormap == None)))
    {
	*error = BadMatch;
	return NullWindow;
    }

    pWin = AllocateWindow(pScreen);
    if (!pWin)
    {
	*error = BadAlloc;
	return NullWindow;
    }
    pWin->drawable = pParent->drawable;
    pWin->drawable.depth = depth;
    if (depth == pParent->drawable.depth)
	pWin->drawable.bitsPerPixel = pParent->drawable.bitsPerPixel;
    else
    {
	for (format = screenInfo.formats; format->depth != depth; format++)
	    ;
	pWin->drawable.bitsPerPixel = format->bitsPerPixel;
    }
    if (class == InputOnly)
	pWin->drawable.type = (short) UNDRAWABLE_WINDOW;
    pWin->drawable.serialNumber = NEXT_SERIAL_NUMBER;

    pWin->drawable.id = wid;
    pWin->drawable.class = class;

    pWin->parent = pParent;
    SetWindowToDefaults(pWin);

    if (visual != ancwopt->visual)
    {
	if (!MakeWindowOptional (pWin))
	{
	    xfree (pWin);
	    *error = BadAlloc;
	    return NullWindow;
	}
	pWin->optional->visual = visual;
	pWin->optional->colormap = None;
    }

    pWin->borderWidth = bw;
#ifdef XCSECURITY
    /*  can't let untrusted clients have background None windows;
     *  they make it too easy to steal window contents
     */
    if (client->trustLevel != XSecurityClientTrusted)
    {
	pWin->backgroundState = BackgroundPixel;
	pWin->background.pixel = 0;
    }
    else
#endif
    pWin->backgroundState = None;

    pWin->borderIsPixel = pParent->borderIsPixel;
    pWin->border = pParent->border;
    if (pWin->borderIsPixel == FALSE)
	pWin->border.pixmap->refcnt++;
		
    pWin->origin.x = x + (int)bw;
    pWin->origin.y = y + (int)bw;
    pWin->drawable.width = w;
    pWin->drawable.height = h;
    pWin->drawable.x = pParent->drawable.x + x + (int)bw;
    pWin->drawable.y = pParent->drawable.y + y + (int)bw;

	/* set up clip list correctly for unobscured WindowPtr */
    REGION_INIT(pScreen, &pWin->clipList, NullBox, 1);
    REGION_INIT(pScreen, &pWin->borderClip, NullBox, 1);
    REGION_INIT(pScreen, &pWin->winSize, NullBox, 1);
    REGION_INIT(pScreen, &pWin->borderSize, NullBox, 1);

    pHead = RealChildHead(pParent);
    if (pHead)
    {
	pWin->nextSib = pHead->nextSib;
	if (pHead->nextSib)
	    pHead->nextSib->prevSib = pWin;
	else
	    pParent->lastChild = pWin;
	pHead->nextSib = pWin;
	pWin->prevSib = pHead;
    }
    else
    {
	pWin->nextSib = pParent->firstChild;
	if (pParent->firstChild)
	    pParent->firstChild->prevSib = pWin;
	else
	    pParent->lastChild = pWin;
	pParent->firstChild = pWin;
    }

    SetWinSize (pWin);
    SetBorderSize (pWin);

    /* We SHOULD check for an error value here XXX */
    if (!(*pScreen->CreateWindow)(pWin))
    {
	*error = BadAlloc;
	DeleteWindow(pWin, None);
	return NullWindow;
    }
    /* We SHOULD check for an error value here XXX */
    (*pScreen->PositionWindow)(pWin, pWin->drawable.x, pWin->drawable.y);

    if (!(vmask & CWEventMask))
	RecalculateDeliverableEvents(pWin);

    if (vmask)
	*error = ChangeWindowAttributes(pWin, vmask, vlist, wClient (pWin));
    else
	*error = Success;

    if (*error != Success)
    {
	DeleteWindow(pWin, None);
	return NullWindow;
    }
    if (!(vmask & CWBackingStore) && (defaultBackingStore != NotUseful))
    {
	XID value = defaultBackingStore;
	(void)ChangeWindowAttributes(pWin, CWBackingStore, &value, wClient (pWin));
	pWin->forcedBS = TRUE;
    }

    if (SubSend(pParent))
    {
	event.u.u.type = CreateNotify;
	event.u.createNotify.window = wid;
	event.u.createNotify.parent = pParent->drawable.id;
	event.u.createNotify.x = x;
	event.u.createNotify.y = y;
	event.u.createNotify.width = w;
	event.u.createNotify.height = h;
	event.u.createNotify.borderWidth = bw;
	event.u.createNotify.override = pWin->overrideRedirect;
	DeliverEvents(pParent, &event, 1, NullWindow);		
    }
    return pWin;
}

static void
#if NeedFunctionPrototypes
FreeWindowResources(register WindowPtr pWin)
#else
FreeWindowResources(pWin)
    register WindowPtr pWin;
#endif
{
    register ScreenPtr pScreen = pWin->drawable.pScreen;

    DeleteWindowFromAnySaveSet(pWin);
    DeleteWindowFromAnySelections(pWin);
    DeleteWindowFromAnyEvents(pWin, TRUE);
    REGION_UNINIT(pScreen, &pWin->clipList);
    REGION_UNINIT(pScreen, &pWin->winSize);
    REGION_UNINIT(pScreen, &pWin->borderClip);
    REGION_UNINIT(pScreen, &pWin->borderSize);
#ifdef SHAPE
    if (wBoundingShape (pWin))
	REGION_DESTROY(pScreen, wBoundingShape (pWin));
    if (wClipShape (pWin))
	REGION_DESTROY(pScreen, wClipShape (pWin));
#endif
    if (pWin->borderIsPixel == FALSE)
	(*pScreen->DestroyPixmap)(pWin->border.pixmap);
    if (pWin->backgroundState == BackgroundPixmap)
	(*pScreen->DestroyPixmap)(pWin->background.pixmap);

    DeleteAllWindowProperties(pWin);
    /* We SHOULD check for an error value here XXX */
    (*pScreen->DestroyWindow)(pWin);
    DisposeWindowOptional (pWin);
}

static void
#if NeedFunctionPrototypes
CrushTree(WindowPtr pWin)
#else
CrushTree(pWin)
    WindowPtr pWin;
#endif
{
    register WindowPtr pChild, pSib, pParent;
    UnrealizeWindowProcPtr UnrealizeWindow;
    xEvent event;

    if (!(pChild = pWin->firstChild))
	return;
    UnrealizeWindow = pWin->drawable.pScreen->UnrealizeWindow;
    while (1)
    {
	if (pChild->firstChild)
	{
	    pChild = pChild->firstChild;
	    continue;
	}
	while (1)
	{
	    pParent = pChild->parent;
	    if (SubStrSend(pChild, pParent))
	    {
		event.u.u.type = DestroyNotify;
		event.u.destroyNotify.window = pChild->drawable.id;
		DeliverEvents(pChild, &event, 1, NullWindow);		
	    }
	    FreeResource(pChild->drawable.id, RT_WINDOW);
	    pSib = pChild->nextSib;
#ifdef DO_SAVE_UNDERS
	    if (pChild->saveUnder && pChild->viewable)
		deltaSaveUndersViewable--;
#endif
	    pChild->viewable = FALSE;
	    if (pChild->realized)
	    {
		pChild->realized = FALSE;
		(*UnrealizeWindow)(pChild);
	    }
	    FreeWindowResources(pChild);
	    xfree(pChild);
	    if ( (pChild = pSib) )
		break;
	    pChild = pParent;
	    pChild->firstChild = NullWindow;
	    pChild->lastChild = NullWindow;
	    if (pChild == pWin)
		return;
	}
    }
}
	
/*****
 *  DeleteWindow
 *	 Deletes child of window then window itself
 *	 If wid is None, don't send any events
 *****/

/*ARGSUSED*/
int
DeleteWindow(value, wid)
    pointer value;
    XID wid;
 {
    register WindowPtr pParent;
    register WindowPtr pWin = (WindowPtr)value;
    xEvent event;

    UnmapWindow(pWin, FALSE);

    CrushTree(pWin);

    pParent = pWin->parent;
    if (wid && pParent && SubStrSend(pWin, pParent))
    {
	event.u.u.type = DestroyNotify;
	event.u.destroyNotify.window = pWin->drawable.id;
	DeliverEvents(pWin, &event, 1, NullWindow);		
    }

    FreeWindowResources(pWin);
    if (pParent)
    {
	if (pParent->firstChild == pWin)
	    pParent->firstChild = pWin->nextSib;
	if (pParent->lastChild == pWin)
	    pParent->lastChild = pWin->prevSib;
	if (pWin->nextSib)
	    pWin->nextSib->prevSib = pWin->prevSib;
	if (pWin->prevSib)
	    pWin->prevSib->nextSib = pWin->nextSib;
    }
    xfree(pWin);

    if (pWin -> optional &&
            pWin -> optional -> colormap &&
                pWin -> parent)
    {
      nxagentSetInstalledColormapWindows(pWin -> drawable.pScreen);
    }

    return Success;
}

/*ARGSUSED*/
void
DestroySubwindows(pWin, client)
    register WindowPtr pWin;
    ClientPtr client;
{
    /* XXX
     * The protocol is quite clear that each window should be
     * destroyed in turn, however, unmapping all of the first
     * eliminates most of the calls to ValidateTree.  So,
     * this implementation is incorrect in that all of the
     * UnmapNotifies occur before all of the DestroyNotifies.
     * If you care, simply delete the call to UnmapSubwindows.
     */
    UnmapSubwindows(pWin);
    while (pWin->lastChild)
	FreeResource(pWin->lastChild->drawable.id, RT_NONE);
}

#define DeviceEventMasks (KeyPressMask | KeyReleaseMask | ButtonPressMask | \
    ButtonReleaseMask | PointerMotionMask)

/*****
 *  ChangeWindowAttributes
 *   
 *  The value-mask specifies which attributes are to be changed; the
 *  value-list contains one value for each one bit in the mask, from least
 *  to most significant bit in the mask.  
 *****/
 
int
ChangeWindowAttributes(pWin, vmask, vlist, client)
    register WindowPtr pWin;
    Mask vmask;
    XID *vlist;
    ClientPtr client;
{
    register Mask index2;
    register XID *pVlist;
    PixmapPtr pPixmap;
    Pixmap pixID;
    CursorPtr pCursor, pOldCursor;
    Cursor cursorID;
    WindowPtr pChild;
    Colormap cmap;
    ColormapPtr	pCmap;
    xEvent xE;
    int result;
    register ScreenPtr pScreen;
    Mask vmaskCopy = 0;
    register Mask tmask;
    unsigned int val;
    int error;
    Bool checkOptional = FALSE;
    Bool borderRelative = FALSE;
    WindowPtr pLayerWin;

    if ((pWin->drawable.class == InputOnly) && (vmask & (~INPUTONLY_LEGAL_MASK)))
	return BadMatch;

    error = Success;
    pScreen = pWin->drawable.pScreen;
    pVlist = vlist;
    tmask = vmask;
    while (tmask)
    {
	index2 = (Mask) lowbit (tmask);
	tmask &= ~index2;
	switch (index2)
	{
	  case CWBackPixmap:
	    pixID = (Pixmap )*pVlist;
	    pVlist++;
	    if (pWin->backgroundState == ParentRelative)
		borderRelative = TRUE;
	    if (pixID == None)
	    {
#ifdef XCSECURITY
		/*  can't let untrusted clients have background None windows */
		if (client->trustLevel == XSecurityClientTrusted)
		{
#endif
		if (pWin->backgroundState == BackgroundPixmap)
		    (*pScreen->DestroyPixmap)(pWin->background.pixmap);
		if (!pWin->parent)
		    MakeRootTile(pWin);
		else
		    pWin->backgroundState = None;
#ifdef XCSECURITY
		}
		else
		{ /* didn't change the background to None, so don't tell ddx */
		    index2 = 0; 
		}
#endif
	    }
	    else if (pixID == ParentRelative)
	    {
		if (pWin->parent &&
		    pWin->drawable.depth != pWin->parent->drawable.depth)
		{
		    error = BadMatch;
		    goto PatchUp;
		}
		if (pWin->backgroundState == BackgroundPixmap)
		    (*pScreen->DestroyPixmap)(pWin->background.pixmap);
		if (!pWin->parent)
		    MakeRootTile(pWin);
		else
		    pWin->backgroundState = ParentRelative;
		borderRelative = TRUE;
		/* Note that the parent's backgroundTile's refcnt is NOT
		 * incremented. */
	    }
	    else
	    {	
		pPixmap = (PixmapPtr)SecurityLookupIDByType(client, pixID,
						RT_PIXMAP, SecurityReadAccess);
		if (pPixmap != (PixmapPtr) NULL)
		{
		    if	((pPixmap->drawable.depth != pWin->drawable.depth) ||
			 (pPixmap->drawable.pScreen != pScreen))
		    {
			error = BadMatch;
			goto PatchUp;
		    }
		    if (pWin->backgroundState == BackgroundPixmap)
			(*pScreen->DestroyPixmap)(pWin->background.pixmap);
		    pWin->backgroundState = BackgroundPixmap;
		    pWin->background.pixmap = pPixmap;
		    pPixmap->refcnt++;
		}
		else
		{
		    error = BadPixmap;
		    client->errorValue = pixID;
		    goto PatchUp;
		}
	    }
	    break;
	  case CWBackPixel:
	    if (pWin->backgroundState == ParentRelative)
		borderRelative = TRUE;
	    if (pWin->backgroundState == BackgroundPixmap)
		(*pScreen->DestroyPixmap)(pWin->background.pixmap);
	    pWin->backgroundState = BackgroundPixel;
	    pWin->background.pixel = (CARD32 ) *pVlist;
		   /* background pixel overrides background pixmap,
		      so don't let the ddx layer see both bits */
	    vmaskCopy &= ~CWBackPixmap;
	    pVlist++;
	    break;
	  case CWBorderPixmap:
	    pixID = (Pixmap ) *pVlist;
	    pVlist++;
	    if (pixID == CopyFromParent)
	    {
		if (!pWin->parent ||
		    (pWin->drawable.depth != pWin->parent->drawable.depth))
		{
		    error = BadMatch;
		    goto PatchUp;
		}
		if (pWin->borderIsPixel == FALSE)
		    (*pScreen->DestroyPixmap)(pWin->border.pixmap);
		pWin->border = pWin->parent->border;
		if ((pWin->borderIsPixel = pWin->parent->borderIsPixel) == TRUE)
		{
		    index2 = CWBorderPixel;
		}
		else
		{
		    pWin->parent->border.pixmap->refcnt++;
		}
	    }
	    else
	    {	
		pPixmap = (PixmapPtr)SecurityLookupIDByType(client, pixID,
					RT_PIXMAP, SecurityReadAccess);
		if (pPixmap)
		{
		    if	((pPixmap->drawable.depth != pWin->drawable.depth) ||
			 (pPixmap->drawable.pScreen != pScreen))
		    {
			error = BadMatch;
			goto PatchUp;
		    }
		    if (pWin->borderIsPixel == FALSE)
			(*pScreen->DestroyPixmap)(pWin->border.pixmap);
		    pWin->borderIsPixel = FALSE;
		    pWin->border.pixmap = pPixmap;
		    pPixmap->refcnt++;
		}
		else
		{
		    error = BadPixmap;
		    client->errorValue = pixID;
		    goto PatchUp;
		}
	    }
	    break;
	  case CWBorderPixel:
	    if (pWin->borderIsPixel == FALSE)
		(*pScreen->DestroyPixmap)(pWin->border.pixmap);
	    pWin->borderIsPixel = TRUE;
	    pWin->border.pixel = (CARD32) *pVlist;
		    /* border pixel overrides border pixmap,
		       so don't let the ddx layer see both bits */
	    vmaskCopy &= ~CWBorderPixmap;
	    pVlist++;
	    break;
	  case CWBitGravity:
	    val = (CARD8 )*pVlist;
	    pVlist++;
	    if (val > StaticGravity)
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->bitGravity = val;
	    break;
	  case CWWinGravity:
	    val = (CARD8 )*pVlist;
	    pVlist++;
	    if (val > StaticGravity)
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->winGravity = val;
	    break;
	  case CWBackingStore:
	    val = (CARD8 )*pVlist;
	    pVlist++;
	    if ((val != NotUseful) && (val != WhenMapped) && (val != Always))
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->backingStore = val;

            #ifdef TEST
            fprintf(stderr, "ChangeWindowAttributes: Changed backing store value to %d for window at %p.\n",
                        val, (void*)pWin);
            #endif

	    pWin->forcedBS = FALSE;
	    break;
	  case CWBackingPlanes:
	    if (pWin->optional || ((CARD32)*pVlist != (CARD32)~0L)) {
		if (!pWin->optional && !MakeWindowOptional (pWin))
		{
		    error = BadAlloc;
		    goto PatchUp;
		}
		pWin->optional->backingBitPlanes = (CARD32) *pVlist;
		if ((CARD32)*pVlist == (CARD32)~0L)
		    checkOptional = TRUE;
	    }
	    pVlist++;
	    break;
	  case CWBackingPixel:
	    if (pWin->optional || (CARD32) *pVlist) {
		if (!pWin->optional && !MakeWindowOptional (pWin))
		{
		    error = BadAlloc;
		    goto PatchUp;
		}
		pWin->optional->backingPixel = (CARD32) *pVlist;
		if (!*pVlist)
		    checkOptional = TRUE;
	    }
	    pVlist++;
	    break;
	  case CWSaveUnder:
	    val = (BOOL) *pVlist;
	    pVlist++;
	    if ((val != xTrue) && (val != xFalse))
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
#ifdef DO_SAVE_UNDERS
	    if (pWin->parent && (pWin->saveUnder != val) && (pWin->viewable) &&
		DO_SAVE_UNDERS(pWin))
	    {
		/*
		 * Re-check all siblings and inferiors for obscurity or
		 * exposition (hee hee).
		 */
		if (pWin->saveUnder)
		    deltaSaveUndersViewable--;
		else
		    deltaSaveUndersViewable++;
		pWin->saveUnder = val;

		if (pWin->firstChild)
		{
                    pLayerWin = (*pScreen->GetLayerWindow)(pWin);
                   if ((*pScreen->ChangeSaveUnder)(pLayerWin->parent, pWin->nextSib))
                       (*pScreen->PostChangeSaveUnder)(pLayerWin->parent,
                                                       pWin->nextSib);
               }
               else
               {
                   if ((*pScreen->ChangeSaveUnder)(pWin, pWin->nextSib))
                       (*pScreen->PostChangeSaveUnder)(pWin,
                                                       pWin->nextSib);
               }                                   
	    }
	    else
	    {
		/*  If we're changing the saveUnder attribute of the root 
		 *  window, all we do is set pWin->saveUnder so that
		 *  GetWindowAttributes returns the right value.  We don't
		 *  do the "normal" save-under processing (as above).
		 *  Hope that doesn't cause any problems.
		 */
		pWin->saveUnder = val;
	    }
#else
	    pWin->saveUnder = val;
#endif /* DO_SAVE_UNDERS */
	    break;
	  case CWEventMask:
            /*
             * TODO: Some applications like java bean shell
             * don' t work if they cannot monitor the root
             * window for Structure Redirect events. However
             * this doesn't seem to be the best solution, since
             * also an X server with a window manager running,
             * doesn't allow to monitor for those events, but
             * the java bean shell works flawlessy on this
             * server.
             *
             * if (nxagentCheckIllegalRootMonitoring(pWin, (Mask)*pVlist))
             * {
             *   return BadAccess;
             * }
             */

	    result = EventSelectForWindow(pWin, client, (Mask )*pVlist);
	    if (result)
	    {
		error = result;
		goto PatchUp;
	    }
	    pVlist++;
	    break;
	  case CWDontPropagate:
	    result = EventSuppressForWindow(pWin, client, (Mask )*pVlist,
					    &checkOptional);
	    if (result)
	    {
		error = result;
		goto PatchUp;
	    }
	    pVlist++;
	    break;
	  case CWOverrideRedirect:
	    val = (BOOL ) *pVlist;
	    pVlist++;
	    if ((val != xTrue) && (val != xFalse))
	    {
		error = BadValue;
		client->errorValue = val;
		goto PatchUp;
	    }
	    pWin->overrideRedirect = val;
	    break;
	  case CWColormap:
	    cmap = (Colormap) *pVlist;
	    pVlist++;
	    if (cmap == CopyFromParent)
	    {
#ifdef XAPPGROUP
		Colormap ag_colormap;
		ClientPtr win_owner;

		/*
		 * win_owner == client for CreateWindow, other clients
		 * can ChangeWindowAttributes
		 */
		win_owner = clients[CLIENT_ID(pWin->drawable.id)];

		if ( win_owner && win_owner->appgroup &&
		    !pWin->parent->parent &&
		    (ag_colormap = XagDefaultColormap (win_owner)))
		    cmap = ag_colormap;
		else
#endif
		if (pWin->parent &&
		    (!pWin->optional ||
		     pWin->optional->visual == wVisual (pWin->parent)))
		{
		    cmap = wColormap (pWin->parent);
		}
		else
		    cmap = None;
	    }
	    if (cmap == None)
	    {
		error = BadMatch;
		goto PatchUp;
	    }
	    pCmap = (ColormapPtr)SecurityLookupIDByType(client, cmap,
					      RT_COLORMAP, SecurityReadAccess);
	    if (!pCmap)
	    {
		error = BadColor;
		client->errorValue = cmap;
		goto PatchUp;
	    }
	    if (pCmap->pVisual->vid != wVisual (pWin) ||
		pCmap->pScreen != pScreen)
	    {
		error = BadMatch;
		goto PatchUp;
	    }
	    if (cmap != wColormap (pWin))
	    {
		if (!pWin->optional)
		{
		    if (!MakeWindowOptional (pWin))
		    {
			error = BadAlloc;
			goto PatchUp;
		    }
		}
		else if (pWin->parent && cmap == wColormap (pWin->parent))
		    checkOptional = TRUE;

		/*
		 * propagate the original colormap to any children
		 * inheriting it
		 */

		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
		{
		    if (!pChild->optional && !MakeWindowOptional (pChild))
		    {
			error = BadAlloc;
			goto PatchUp;
		    }
		}

		pWin->optional->colormap = cmap;

		/*
		 * check on any children now matching the new colormap
		 */

		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
		{
		    if (pChild->optional->colormap == cmap)
			CheckWindowOptionalNeed (pChild);
		}
	
		xE.u.u.type = ColormapNotify;
		xE.u.colormap.window = pWin->drawable.id;
		xE.u.colormap.colormap = cmap;
		xE.u.colormap.new = xTrue;
		xE.u.colormap.state = IsMapInstalled(cmap, pWin);
		DeliverEvents(pWin, &xE, 1, NullWindow);
	    }
	    break;
	  case CWCursor:
	    cursorID = (Cursor ) *pVlist;
	    pVlist++;
	    /*
	     * install the new
	     */
	    if ( cursorID == None)
	    {
		if (pWin == WindowTable[pWin->drawable.pScreen->myNum])
		    pCursor = rootCursor;
		else
		    pCursor = (CursorPtr) None;
	    }
	    else
	    {
		pCursor = (CursorPtr)SecurityLookupIDByType(client, cursorID,
						RT_CURSOR, SecurityReadAccess);
		if (!pCursor)
		{
		    error = BadCursor;
		    client->errorValue = cursorID;
		    goto PatchUp;
		}
	    }

	    if (pCursor != wCursor (pWin))
	    {
		/*
		 * patch up child windows so they don't lose cursors.
		 */

		for (pChild = pWin->firstChild; pChild; pChild=pChild->nextSib)
		{
		    if (!pChild->optional && !pChild->cursorIsNone &&
			!MakeWindowOptional (pChild))
		    {
			error = BadAlloc;
			goto PatchUp;
		    }
		}

		pOldCursor = 0;
		if (pCursor == (CursorPtr) None)
		{
		    pWin->cursorIsNone = TRUE;
		    if (pWin->optional)
		    {
			pOldCursor = pWin->optional->cursor;
			pWin->optional->cursor = (CursorPtr) None;
			checkOptional = TRUE;
		    }
		} else {
		    if (!pWin->optional)
		    {
			if (!MakeWindowOptional (pWin))
			{
			    error = BadAlloc;
			    goto PatchUp;
			}
		    }
		    else if (pWin->parent && pCursor == wCursor (pWin->parent))
			checkOptional = TRUE;
		    pOldCursor = pWin->optional->cursor;
		    pWin->optional->cursor = pCursor;
		    pCursor->refcnt++;
		    pWin->cursorIsNone = FALSE;
		    /*
		     * check on any children now matching the new cursor
		     */

		    for (pChild=pWin->firstChild; pChild; pChild=pChild->nextSib)
		    {
			if (pChild->optional &&
			    (pChild->optional->cursor == pCursor))
			    CheckWindowOptionalNeed (pChild);
		    }
		}

		if (pWin->realized)
		    WindowHasNewCursor( pWin);

		/* Can't free cursor until here - old cursor
		 * is needed in WindowHasNewCursor
		 */
		if (pOldCursor)
		    FreeCursor (pOldCursor, (Cursor)0);
	    }
	    break;
	 default:
	    error = BadValue;
	    client->errorValue = vmask;
	    goto PatchUp;
      }
      vmaskCopy |= index2;
    }
PatchUp:
    if (checkOptional)
	CheckWindowOptionalNeed (pWin);

	/* We SHOULD check for an error value here XXX */
    (*pScreen->ChangeWindowAttributes)(pWin, vmaskCopy);

    /* 
	If the border contents have changed, redraw the border. 
	Note that this has to be done AFTER pScreen->ChangeWindowAttributes
	for the tile to be rotated, and the correct function selected.
    */
    if (((vmaskCopy & (CWBorderPixel | CWBorderPixmap)) || borderRelative)
	&& pWin->viewable && HasBorder (pWin))
    {
	RegionRec exposed;

	REGION_INIT(pScreen, &exposed, NullBox, 0);
	REGION_SUBTRACT(pScreen, &exposed, &pWin->borderClip, &pWin->winSize);
	(*pWin->drawable.pScreen->PaintWindowBorder)(pWin, &exposed, PW_BORDER);
	REGION_UNINIT(pScreen, &exposed);
    }
    return error;
}


/*****
 * GetWindowAttributes
 *    Notice that this is different than ChangeWindowAttributes
 *****/

void
GetWindowAttributes(pWin, client, wa)
    register WindowPtr pWin;
    ClientPtr client;
    xGetWindowAttributesReply *wa;
{
    wa->type = X_Reply;
    wa->bitGravity = pWin->bitGravity;
    wa->winGravity = pWin->winGravity;
    if (pWin->forcedBS && pWin->backingStore != Always)
	wa->backingStore = NotUseful;
    else
	wa->backingStore = pWin->backingStore;
    wa->length = (sizeof(xGetWindowAttributesReply) -
		 sizeof(xGenericReply)) >> 2;
    wa->sequenceNumber = client->sequence;
    wa->backingBitPlanes =  wBackingBitPlanes (pWin);
    wa->backingPixel =  wBackingPixel (pWin);
    wa->saveUnder = (BOOL)pWin->saveUnder;
    wa->override = pWin->overrideRedirect;
    if (!pWin->mapped)
	wa->mapState = IsUnmapped;
    else if (pWin->realized)
	wa->mapState = IsViewable;
    else
	wa->mapState = IsUnviewable;

    wa->colormap =  wColormap (pWin);
    wa->mapInstalled = (wa->colormap == None) ? xFalse
				: IsMapInstalled(wa->colormap, pWin);

    wa->yourEventMask = EventMaskForClient(pWin, client);
    wa->allEventMasks = pWin->eventMask | wOtherEventMasks (pWin);
    wa->doNotPropagateMask = wDontPropagateMask (pWin);
    wa->class = pWin->drawable.class;
    wa->visualID = wVisual (pWin);
}


WindowPtr
MoveWindowInStack(pWin, pNextSib)
    register WindowPtr pWin, pNextSib;
{
    register WindowPtr pParent = pWin->parent;
    WindowPtr pFirstChange = pWin; /* highest window where list changes */

    if (pWin->nextSib != pNextSib)
    {
	WindowPtr pOldNextSib = pWin->nextSib;

	if (!pNextSib)	      /* move to bottom */
	{
	    if (pParent->firstChild == pWin)
		pParent->firstChild = pWin->nextSib;
	    /* if (pWin->nextSib) */	 /* is always True: pNextSib == NULL
					  * and pWin->nextSib != pNextSib
					  * therefore pWin->nextSib != NULL */
	    pFirstChange = pWin->nextSib;
	    pWin->nextSib->prevSib = pWin->prevSib;
	    if (pWin->prevSib)
		pWin->prevSib->nextSib = pWin->nextSib;
	    pParent->lastChild->nextSib = pWin;
	    pWin->prevSib = pParent->lastChild;
	    pWin->nextSib = NullWindow;
	    pParent->lastChild = pWin;
	}
	else if (pParent->firstChild == pNextSib) /* move to top */
	{
	    pFirstChange = pWin;
	    if (pParent->lastChild == pWin)
	       pParent->lastChild = pWin->prevSib;
	    if (pWin->nextSib)
		pWin->nextSib->prevSib = pWin->prevSib;
	    if (pWin->prevSib)
		pWin->prevSib->nextSib = pWin->nextSib;
	    pWin->nextSib = pParent->firstChild;
	    pWin->prevSib = (WindowPtr ) NULL;
	    pNextSib->prevSib = pWin;
	    pParent->firstChild = pWin;
	}
	else			/* move in middle of list */
	{
	    WindowPtr pOldNext = pWin->nextSib;

	    pFirstChange = NullWindow;
	    if (pParent->firstChild == pWin)
		pFirstChange = pParent->firstChild = pWin->nextSib;
	    if (pParent->lastChild == pWin) {
	       pFirstChange = pWin;
	       pParent->lastChild = pWin->prevSib;
	    }
	    if (pWin->nextSib)
		pWin->nextSib->prevSib = pWin->prevSib;
	    if (pWin->prevSib)
		pWin->prevSib->nextSib = pWin->nextSib;
	    pWin->nextSib = pNextSib;
	    pWin->prevSib = pNextSib->prevSib;
	    if (pNextSib->prevSib)
		pNextSib->prevSib->nextSib = pWin;
	    pNextSib->prevSib = pWin;
	    if (!pFirstChange) {		     /* do we know it yet? */
		pFirstChange = pParent->firstChild;  /* no, search from top */
		while ((pFirstChange != pWin) && (pFirstChange != pOldNext))
		     pFirstChange = pFirstChange->nextSib;
	    }
	}
	if(pWin->drawable.pScreen->RestackWindow)
	    (*pWin->drawable.pScreen->RestackWindow)(pWin, pOldNextSib);
    }

    return( pFirstChange );
}

RegionPtr
CreateUnclippedWinSize (pWin)
    register WindowPtr	 pWin;
{
    RegionPtr	pRgn;
    BoxRec	box;

    box.x1 = pWin->drawable.x;
    box.y1 = pWin->drawable.y;
    box.x2 = pWin->drawable.x + (int) pWin->drawable.width;
    box.y2 = pWin->drawable.y + (int) pWin->drawable.height;
    pRgn = REGION_CREATE(pWin->drawable.pScreen, &box, 1);
#ifdef SHAPE
    if (wBoundingShape (pWin) || wClipShape (pWin)) {
	REGION_PTR(pScreen, pWin)

	REGION_TRANSLATE(pScreen, pRgn, - pWin->drawable.x,
			 - pWin->drawable.y);
	if (wBoundingShape (pWin))
	    REGION_INTERSECT(pScreen, pRgn, pRgn, wBoundingShape (pWin));
	if (wClipShape (pWin))
	    REGION_INTERSECT(pScreen, pRgn, pRgn, wClipShape (pWin));
	REGION_TRANSLATE(pScreen, pRgn, pWin->drawable.x, pWin->drawable.y);
    }
#endif
    return pRgn;
}

void
SetWinSize (pWin)
    register WindowPtr pWin;
{
    ClippedRegionFromBox(pWin->parent, &pWin->winSize,
			 pWin->drawable.x, pWin->drawable.y,
			 (int)pWin->drawable.width,
			 (int)pWin->drawable.height);
#ifdef SHAPE
    if (wBoundingShape (pWin) || wClipShape (pWin)) {
	REGION_PTR(pScreen, pWin)

	REGION_TRANSLATE(pScreen, &pWin->winSize, - pWin->drawable.x,
			 - pWin->drawable.y);
	if (wBoundingShape (pWin))
	    REGION_INTERSECT(pScreen, &pWin->winSize, &pWin->winSize,
			     wBoundingShape (pWin));
	if (wClipShape (pWin))
	    REGION_INTERSECT(pScreen, &pWin->winSize, &pWin->winSize,
			     wClipShape (pWin));
	REGION_TRANSLATE(pScreen, &pWin->winSize, pWin->drawable.x,
			 pWin->drawable.y);
    }
#endif
}

void
SetBorderSize (pWin)
    register WindowPtr pWin;
{
    int	bw;

    if (HasBorder (pWin)) {
	bw = wBorderWidth (pWin);
	ClippedRegionFromBox(pWin->parent, &pWin->borderSize,
		pWin->drawable.x - bw, pWin->drawable.y - bw,
		(int)(pWin->drawable.width + (bw<<1)),
		(int)(pWin->drawable.height + (bw<<1)));
#ifdef SHAPE
	if (wBoundingShape (pWin)) {
	    REGION_PTR(pScreen, pWin)

	    REGION_TRANSLATE(pScreen, &pWin->borderSize, - pWin->drawable.x,
			     - pWin->drawable.y);
	    REGION_INTERSECT(pScreen, &pWin->borderSize, &pWin->borderSize,
			     wBoundingShape (pWin));
	    REGION_TRANSLATE(pScreen, &pWin->borderSize, pWin->drawable.x,
			     pWin->drawable.y);
	    REGION_UNION(pScreen, &pWin->borderSize, &pWin->borderSize,
			 &pWin->winSize);
	}
#endif
    } else {
	REGION_COPY(pWin->drawable.pScreen, &pWin->borderSize,
					       &pWin->winSize);
    }
}

void
GravityTranslate (x, y, oldx, oldy, dw, dh, gravity, destx, desty)
    register int x, y;		/* new window position */
    int		oldx, oldy;	/* old window position */
    int		dw, dh;
    unsigned	gravity;
    register int *destx, *desty;	/* position relative to gravity */
{
    switch (gravity) {
    case NorthGravity:
	*destx = x + dw / 2;
	*desty = y;
	break;
    case NorthEastGravity:
	*destx = x + dw;
	*desty = y;
	break;
    case WestGravity:
	*destx = x;
	*desty = y + dh / 2;
	break;
    case CenterGravity:
	*destx = x + dw / 2;
	*desty = y + dh / 2;
	break;
    case EastGravity:
	*dest…