ev_read(S)
ev_read --
read the next event in the queue
Syntax
cc . . . -levent
#include <sys/types.h>
#include <sys/param.h>
#include <sys/sysmacros.h>
#include <sys/page.h>
#include <sys/event.h>
#include <mouse.h>
EVENT* ev_read ()
Description
ev_read
returns a pointer to the next event in the queue or NULL if the
queue is empty. Multiple calls to this routine return the same pointer
until ev_pop is called.
An error occurs if this routine is called from a program without
an open event queue.
Diagnostics
This routine returns NULL if there is no event to read
or if there is not an open event queue.
See also
ev_block(S),
ev_close(S),
ev_count(S),
ev_flush(S),
ev_getdev(S),
ev_getemask(S),
ev_gindev(S),
ev_init(S),
ev_open(S),
ev_pop(S),
ev_resume(S),
ev_setemask(S),
ev_suspend(S)
Standards conformance
ev_read is not part of any currently supported standard;
it is an extension of AT&T System V provided by the Santa Cruz Operation.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003