12-28-2013
i think using timer control and timer_tick event would be better. Google it.
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LEARN ABOUT HPUX
xtpeekevent
XtPeekEvent() XtPeekEvent()
Name
XtPeekEvent - return, but do not remove the event at the head of an application's input queue.
Synopsis
Boolean XtPeekEvent(event_return)
XEvent *event_return;
Inputs
event_return
Returns the event information from the head event structure in the queue.
Returns
True if the event at the head of the queue is an X event; False if it is a timer event or an alternate input source event.
Availability
XtPeekEvent() has been superseded by XtAppPeekEvent().
Description
XtPeekEvent() returns a copy of the X event at the head of the input queue, without removing it from the queue. If there is an X event, it
returns True. If there are no X events pending, but there are timer or alternate events, XtPeekEvent() returns False. If there are no
events pending, XtPeekEvent() blocks.
Usage
XtPeekEvent() has been superseded by XtAppPeekEvent(), which performs the same function on a per-application context basis. XtPeekEvent()
now calls XtAppPeekEvent() passing the default application context created by XtInitialize(). Very few programs need multiple application
contexts, and you can continue to use XtPeekEvent() if you initialize your application with XtInitialize(). We recommend, however, that
you use XtAppInitialize(), XtAppPeekEvent(), and the other XtApp*() application context specific functions.
See XtAppPeekEvent() for more information.
Programs rarely need this much control over the event dispatching mechanism. Most programs use XtAppMainLoop().
See Also
XtAppMainLoop(1), XtAppPeekEvent(1), XtAppPending(1).
Xt - Event Handling XtPeekEvent()