Return to XChkWinEvent.c CVS log

Up to [CSRG BSD Unix] / 43BSDTahoe / new / X / Xlib

Annotation of 43BSDTahoe/new/X/Xlib/XChkWinEvent.c, revision 1.1.1.1

1.1       root        1: #include <X/mit-copyright.h>
                      2: 
                      3: /* $Header: XChkWinEvent.c,v 10.1 86/03/28 11:28:48 jg Rel $ */
                      4: /* Copyright    Massachusetts Institute of Technology    1985  */
                      5: 
                      6: #include "XlibInternal.h"
                      7: 
                      8: extern _QEvent *_qfree;
                      9: 
                     10: /* 
                     11:  * Flush output and return the next event in the queue
                     12:  * for the given window matching one of the events in the mask if there
                     13:  * is one.  Return whether such an event was found.
                     14:  * Events earlier in the queue are not discarded.
                     15:  */
                     16: 
                     17: int XCheckWindowEvent (w, mask, event)
                     18:        Window w;               /* Selected window. */
                     19:        int mask;               /* Selected event mask. */
                     20:        register XEvent *event; /* XEvent to be filled in. */
                     21: {
                     22:        register Display *dpy;
                     23:        register _QEvent *prev, *qelt;
                     24: 
                     25:        dpy = _XlibCurrentDisplay;
                     26:        _XFlush (dpy);
                     27:        for (prev = NULL, qelt = dpy->head;
                     28:             qelt && (qelt->event.window != w ||
                     29:                      !(qelt->event.type & mask));
                     30:             qelt = (prev = qelt)->next) ;
                     31:        if (qelt) {
                     32:            *event = qelt->event;
                     33:            if (prev) {
                     34:                if ((prev->next = qelt->next) == NULL)
                     35:                    dpy->tail = prev;
                     36:            } else {
                     37:                if ((dpy->head = qelt->next) == NULL)
                     38:                    dpy->tail = NULL;
                     39:            }
                     40:            qelt->next = _qfree;
                     41:            _qfree = qelt;
                     42:            dpy->qlen--;
                     43:            return 1;
                     44:        } else return 0;
                     45: }

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