76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/* $Xorg: QuTree.c,v 1.4 2001/02/09 02:03:35 xorgcvs Exp $ */
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/*
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Copyright 1986, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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/* $XFree86: xc/lib/X11/QuTree.c,v 1.5 2001/01/17 19:41:42 dawes Exp $ */
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#define NEED_REPLIES
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "Xlibint.h"
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Status XQueryTree (dpy, w, root, parent, children, nchildren)
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register Display *dpy;
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Window w;
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Window *root; /* RETURN */
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Window *parent; /* RETURN */
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Window **children; /* RETURN */
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unsigned int *nchildren; /* RETURN */
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{
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long nbytes;
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xQueryTreeReply rep;
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register xResourceReq *req;
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LockDisplay(dpy);
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GetResReq(QueryTree, w, req);
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if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
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UnlockDisplay(dpy);
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SyncHandle();
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return (0);
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}
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*children = (Window *) NULL;
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if (rep.nChildren != 0) {
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nbytes = rep.nChildren * sizeof(Window);
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*children = (Window *) Xmalloc((unsigned) nbytes);
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nbytes = rep.nChildren << 2;
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if (! *children) {
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_XEatData(dpy, (unsigned long) nbytes);
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UnlockDisplay(dpy);
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SyncHandle();
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return (0);
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}
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_XRead32 (dpy, (long *) *children, nbytes);
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}
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*parent = rep.parent;
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*root = rep.root;
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*nchildren = rep.nChildren;
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UnlockDisplay(dpy);
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SyncHandle();
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return (1);
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}
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