AuScanEvents(3) 					     Library Functions Manual						   AuScanEvents(3)

Name
       AuScanEvents - return the first event that satisfies the predicate

Synopsis
       #include <audio/audiolib.h>

       AuBool AuScanEvents(server, mode, dequeue, predicate, arg, event)
	   AuServer *server;
	   int mode;
	   AuBool dequeue;
	   AuBool (*predicate)(AuServer *,AuEvent *, AuPointer);
	   AuPointer arg;
	   AuEvent *event; /* RETURN */

Arguments
       server	 Specifies the connection to the audio server.

       mode	 Specifies how far to look for a match.  This should be one of these constants: AuEventsQueuedAlready, AuEventsQueuedAfterReading,
		 or AuEventsQueuedAfterFlush.

       dequeue	 Specifies if a matching event is found, should it be removed from the queue.

       predicate Specifies the procedure that is called to determine if an event matches the criteria.

       arg	 Specifies any additional arguments to be passed to the predicate procedure.

       event	 Returns the matching event if found.

Description
       AuScanEvents scans the event queue looking for the first event that satisfies the caller-supplied predicate.  If mode is  AuEventsQueuedAl-
       ready,  AuScanEvents  only checks for events already in the queue.  If mode is AuEventsQueuedAfterReading, and a matching event isn't found
       already in the queue, AuScanEvents attempts to read more events out of the application's connection.  If mode  is  AuEventsQueuedAfterFlush
       and  a  matching  event	isn't already in the queue or isn't waiting to be read, AuScanEvents flushes the output queue and attempts to read
       more events out of the application's connection.  If dequeue is AuTrue, and a matching event is found, it is removed from the  queue.   The
       predicate procedure is called with the arguments server, event, and arg and should return AuTrue to indicate a match.

See Also
       AuEventsQueued, AuScanForTypedEvent, AuNextEvent.

       audiolib - Network Audio System C Language Interface

audiolib - event handling					       1.9.3							   AuScanEvents(3)