AQLength(3X)

NAME

AQLength − return the number of events on audio event queue

SYNOPSIS

#include <Alib.h> int
AQLength (

Audio ∗ audio );

DESCRIPTION

audio specifies the Audio structure associated with this connection.

RETURN VALUE

Upon successful completion, AQLength() returns the number of events on the audio event queue for the audio connection.

ERRORS

AQLength() does not return an error status. Note that the application program may crash if audio does not point to a valid Audio structure.

EXAMPLE

The following example gets the number of events on the audio event queue.

int e_num; /∗ number of events ∗/

Audio ∗ audio; /∗ audio connection ∗/
.
.
.

/∗ get number of events on queue ∗/

e_num = AQLength(audio);

NOTES

AQLength() is a convenience function that enables the client program to examine a component of the internal Audio structure that is created by AOpenAudio(). The contents of the structure should be treated as read-only.

In order to ensure that the compiler finds the Audio Library (libAlib.sl) and the Alib.h header file, you must add the following switches:

-L /opt/audio/lib
-I/opt/audio/include

DEPENDENCIES

This function belongs to the Audio Library of functions that manage connections to an audio server. The audio server must run on a system that has audio hardware. To find out whether or not your system has audio hardware, refer to Using the Audio Developer’s Kit or the online help for the Audio control panel. For information about the audio capabilities of a particular system use the online example audioinfo.c.

AUTHOR

AQLength() was developed by HP.

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