C++ (Cpp) cvtINT16toShort Examples

Example #1

File: GetMoEv.c Project: AKatti/androix-lib-libX11

XTimeCoord *XGetMotionEvents(
    register Display *dpy,
    Window w,
    Time start,
    Time stop,
    int *nEvents)  /* RETURN */
{
    xGetMotionEventsReply rep;
    register xGetMotionEventsReq *req;
    XTimeCoord *tc = NULL;
    long nbytes;
    LockDisplay(dpy);
    GetReq(GetMotionEvents, req);
    req->window = w;
/* XXX is this right for all machines? */
    req->start = start;
    req->stop  = stop;
    if (!_XReply (dpy, (xReply *)&rep, 0, xFalse)) {
	UnlockDisplay(dpy);
        SyncHandle();
	return (NULL);
	}

    if (rep.nEvents) {
	if (! (tc = (XTimeCoord *)
	       Xmalloc( (unsigned)
		       (nbytes = (long) rep.nEvents * sizeof(XTimeCoord))))) {
	    _XEatData (dpy, (unsigned long) nbytes);
	    UnlockDisplay(dpy);
	    SyncHandle();
	    return (NULL);
	}
    }

    *nEvents = rep.nEvents;
    nbytes = SIZEOF (xTimecoord);
    {
	register XTimeCoord *tcptr;
	register int i;
	xTimecoord xtc;

	for (i = rep.nEvents, tcptr = tc; i > 0; i--, tcptr++) {
	    _XRead (dpy, (char *) &xtc, nbytes);
	    tcptr->time = xtc.time;
	    tcptr->x    = cvtINT16toShort (xtc.x);
	    tcptr->y    = cvtINT16toShort (xtc.y);
	}
    }

    UnlockDisplay(dpy);
    SyncHandle();
    return (tc);
}

Example #2

File: GetMoEv.c Project: KuroyTatakai/libX11

XTimeCoord *XGetMotionEvents(
    register Display *dpy,
    Window w,
    Time start,
    Time stop,
    int *nEvents)  /* RETURN */
{
    xGetMotionEventsReply rep;
    register xGetMotionEventsReq *req;
    XTimeCoord *tc = NULL;
    LockDisplay(dpy);
    GetReq(GetMotionEvents, req);
    req->window = w;
/* XXX is this right for all machines? */
    req->start = start;
    req->stop  = stop;
    if (!_XReply (dpy, (xReply *)&rep, 0, xFalse)) {
	UnlockDisplay(dpy);
        SyncHandle();
	return (NULL);
	}

    if (rep.nEvents && (rep.nEvents < (INT_MAX / sizeof(XTimeCoord))))
	tc = Xmalloc(rep.nEvents * sizeof(XTimeCoord));
    if (tc == NULL) {
	/* server returned either no events or a bad event count */
	*nEvents = 0;
	_XEatDataWords (dpy, rep.length);
    }
    else
    {
	register XTimeCoord *tcptr;
	unsigned int i;
	xTimecoord xtc;

	*nEvents = (int) rep.nEvents;
	for (i = rep.nEvents, tcptr = tc; i > 0; i--, tcptr++) {
	    _XRead (dpy, (char *) &xtc, SIZEOF (xTimecoord));
	    tcptr->time = xtc.time;
	    tcptr->x    = cvtINT16toShort (xtc.x);
	    tcptr->y    = cvtINT16toShort (xtc.y);
	}
    }

    UnlockDisplay(dpy);
    SyncHandle();
    return (tc);
}