EV_COUNT(S) UNIX System V EV_COUNT(S)
Name
ev_count - returns the number of events currently in the
queue
Syntax
#include <types.h>
#include <param.h>
#include <sysmacros.h>
#include <page.h>
#include <event.h>
#include <mouse.h>
int ev_count()
Description
ev_count Returns the number of events currently in the
queue. An event queue must have been opened with ev_init(S)
and ev_open(S).
Diagnostics
ev_count returns -1 if there is not an open event queue.
See Also
ev_block(S), ev_close(S), ev_flush(S), ev_getdev(S),
ev_getemask(S), ev_gindev(S), ev_init(S), ev_open(S),
ev_pop(S), ev_read(S), ev_resume(S), ev_setemask(S),
ev_suspend(S)
Notes
This routine must be linked in with the -levent linker
option.
(printed 6/20/89)