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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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#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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#include "reallocarray.h"
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#include <limits.h>
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XTimeCoord *XGetMotionEvents(
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register Display *dpy,
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Window w,
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Time start,
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Time stop,
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int *nEvents) /* RETURN */
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{
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xGetMotionEventsReply rep;
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register xGetMotionEventsReq *req;
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XTimeCoord *tc = NULL;
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LockDisplay(dpy);
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GetReq(GetMotionEvents, req);
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req->window = w;
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/* XXX is this right for all machines? */
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req->start = start;
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req->stop = stop;
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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 (NULL);
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}
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if (rep.nEvents && (rep.nEvents < (INT_MAX / sizeof(XTimeCoord))))
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tc = Xmallocarray(rep.nEvents, sizeof(XTimeCoord));
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if (tc == NULL) {
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/* server returned either no events or a bad event count */
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*nEvents = 0;
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_XEatDataWords (dpy, rep.length);
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}
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else
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{
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register XTimeCoord *tcptr;
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unsigned int i;
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xTimecoord xtc;
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*nEvents = (int) rep.nEvents;
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for (i = rep.nEvents, tcptr = tc; i > 0; i--, tcptr++) {
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_XRead (dpy, (char *) &xtc, SIZEOF (xTimecoord));
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tcptr->time = xtc.time;
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tcptr->x = cvtINT16toShort (xtc.x);
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tcptr->y = cvtINT16toShort (xtc.y);
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}
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}
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UnlockDisplay(dpy);
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SyncHandle();
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return (tc);
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}
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