Return to XPeekEvent.c CVS log

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

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

1.1     ! root        1: #include "copyright.h"
        !             2: 
        !             3: /* $Header: XPeekEvent.c,v 11.11 87/09/11 08:05:29 toddb Exp $ */
        !             4: /* Copyright    Massachusetts Institute of Technology    1986  */
        !             5: 
        !             6: #define NEED_EVENTS
        !             7: #include "Xlibint.h"
        !             8: 
        !             9: extern _XQEvent *_qfree;
        !            10: 
        !            11: /* 
        !            12:  * Flush output and (wait for and) return the next event in the queue,
        !            13:  * BUT do not remove it from the queue.
        !            14:  */
        !            15: 
        !            16: XPeekEvent (dpy, event)
        !            17:        register Display *dpy;
        !            18:        register XEvent *event;
        !            19: {
        !            20:        register _XQEvent *qelt;
        !            21:        xEvent ev;
        !            22: 
        !            23:        LockDisplay(dpy);
        !            24:        _XFlush (dpy);
        !            25:        if (qelt = (_XQEvent *)dpy->head) {
        !            26:            *event = qelt->event;
        !            27:            UnlockDisplay(dpy);
        !            28:            return;
        !            29:            }
        !            30: 
        !            31:        while (1) {
        !            32:            _XRead (dpy, (char *)&ev, (long) sizeof(xEvent));
        !            33:            if (ev.u.u.type == X_Error)
        !            34:                _XError (dpy, (xError *) event);
        !            35:            else {  /* it's an event packet */
        !            36:                _XEnq (dpy, &ev);
        !            37:                *event = dpy->head->event;
        !            38:                UnlockDisplay(dpy);
        !            39:                return;
        !            40:                }
        !            41:        }
        !            42: }
        !            43: 

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