Return to XGetMoEv.c CVS log

Up to [Research Unix] / researchv9 / X11 / src / X.V11R1 / lib / X

Annotation of researchv9/X11/src/X.V11R1/lib/X/XGetMoEv.c, revision 1.1

1.1     ! root        1: #include "copyright.h"
        !             2: 
        !             3: /* $Header: XGetMoEv.c,v 11.13 87/09/11 08:04:16 toddb Exp $ */
        !             4: /* Copyright    Massachusetts Institute of Technology    1986  */
        !             5: 
        !             6: #define NEED_REPLIES
        !             7: #include "Xlibint.h"
        !             8: 
        !             9: XTimeCoord *XGetMotionEvents(dpy, w, start, stop, nEvents)
        !            10:     register Display *dpy;
        !            11:     Time start, stop;
        !            12:     Window w;
        !            13:     int *nEvents;  /* RETURN */
        !            14: {       
        !            15:     xGetMotionEventsReply rep;
        !            16:     register xGetMotionEventsReq *req;
        !            17:     XTimeCoord *tc;
        !            18:     long nbytes;
        !            19:     LockDisplay(dpy);
        !            20:     GetReq(GetMotionEvents, req);
        !            21:     req->window = w;
        !            22: /* XXX is this right for all machines? */
        !            23:     req->start = start;
        !            24:     req->stop  = stop;
        !            25:     if (!_XReply (dpy, (xReply *)&rep, 0, xFalse)) {
        !            26:        UnlockDisplay(dpy);
        !            27:         SyncHandle();
        !            28:        *nEvents = 0;
        !            29:        return (NULL);
        !            30:        }
        !            31:     
        !            32:     *nEvents = rep.nEvents;
        !            33:     tc = (XTimeCoord *) Xmalloc (
        !            34:                (unsigned)(nbytes = (long)rep.nEvents * sizeof (XTimeCoord)));
        !            35:     if (!tc) {
        !            36:        /* XXX this is wrong!!  we need to read and throw away the data
        !            37:            somehow.  Probably we should try to malloc less space and repeatedly
        !            38:            read the events into the smaller space.... */
        !            39:        *nEvents = 0;
        !            40:        UnlockDisplay(dpy);
        !            41:         SyncHandle();
        !            42:        return (NULL);
        !            43:        }
        !            44:     _XRead (dpy, (char *) tc, nbytes);
        !            45:     /* XXX need to do something different if short isn't 16-bits, or long
        !            46:        isn't 32-bits, since in that case XTimeCoord won't be the same as
        !            47:        protocol structure */
        !            48: 
        !            49:     UnlockDisplay(dpy);
        !            50:     SyncHandle();
        !            51:     return (tc);
        !            52: }
        !            53: 

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.