11ab64890Smrg/*
21ab64890Smrg
31ab64890SmrgCopyright 1986, 1998  The Open Group
41ab64890Smrg
51ab64890SmrgPermission to use, copy, modify, distribute, and sell this software and its
61ab64890Smrgdocumentation for any purpose is hereby granted without fee, provided that
71ab64890Smrgthe above copyright notice appear in all copies and that both that
81ab64890Smrgcopyright notice and this permission notice appear in supporting
91ab64890Smrgdocumentation.
101ab64890Smrg
111ab64890SmrgThe above copyright notice and this permission notice shall be included in
121ab64890Smrgall copies or substantial portions of the Software.
131ab64890Smrg
141ab64890SmrgTHE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
151ab64890SmrgIMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
161ab64890SmrgFITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
171ab64890SmrgOPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
181ab64890SmrgAN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
191ab64890SmrgCONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
201ab64890Smrg
211ab64890SmrgExcept as contained in this notice, the name of The Open Group shall not be
221ab64890Smrgused in advertising or otherwise to promote the sale, use or other dealings
231ab64890Smrgin this Software without prior written authorization from The Open Group.
241ab64890Smrg
251ab64890Smrg*/
261ab64890Smrg
271ab64890Smrg#ifdef HAVE_CONFIG_H
281ab64890Smrg#include <config.h>
291ab64890Smrg#endif
301ab64890Smrg#include "Xlibint.h"
31258a0ebeSmrg#include "reallocarray.h"
321ab64890Smrg
331ab64890SmrgStatus XQueryTree (
341ab64890Smrg    register Display *dpy,
351ab64890Smrg    Window w,
361ab64890Smrg    Window *root,	/* RETURN */
371ab64890Smrg    Window *parent,	/* RETURN */
381ab64890Smrg    Window **children,	/* RETURN */
391ab64890Smrg    unsigned int *nchildren)  /* RETURN */
401ab64890Smrg{
41eb411b4bSmrg    unsigned long nbytes;
421ab64890Smrg    xQueryTreeReply rep;
431ab64890Smrg    register xResourceReq *req;
441ab64890Smrg
451ab64890Smrg    LockDisplay(dpy);
461ab64890Smrg    GetResReq(QueryTree, w, req);
471ab64890Smrg    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
481ab64890Smrg	UnlockDisplay(dpy);
491ab64890Smrg	SyncHandle();
501ab64890Smrg	return (0);
511ab64890Smrg	}
521ab64890Smrg
5361b2299dSmrg    *children = (Window *) NULL;
541ab64890Smrg    if (rep.nChildren != 0) {
55258a0ebeSmrg	*children = Xmallocarray(rep.nChildren, sizeof(Window));
561ab64890Smrg	if (! *children) {
57eb411b4bSmrg	    _XEatDataWords(dpy, rep.length);
581ab64890Smrg	    UnlockDisplay(dpy);
591ab64890Smrg	    SyncHandle();
601ab64890Smrg	    return (0);
611ab64890Smrg	}
62eb411b4bSmrg	nbytes = rep.nChildren << 2;
631ab64890Smrg	_XRead32 (dpy, (long *) *children, nbytes);
641ab64890Smrg    }
651ab64890Smrg    *parent = rep.parent;
661ab64890Smrg    *root = rep.root;
671ab64890Smrg    *nchildren = rep.nChildren;
681ab64890Smrg    UnlockDisplay(dpy);
691ab64890Smrg    SyncHandle();
701ab64890Smrg    return (1);
711ab64890Smrg}
721ab64890Smrg
73