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Full Discussion: Help with linked list in C
Top Forums Programming Help with linked list in C Post 302509785 by omega666 on Thursday 31st of March 2011 05:21:38 PM
Old 03-31-2011
the use of head was from an example, but i don't understand why its being done, and why my function isn't working the same way (without using head)
 

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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  XtPeekEvent() has been superseded by XtAppPeekEvent().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  XtPeekEvent()  has been superseded by XtAppPeekEvent(), which performs the same function on a per-application context basis.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()
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