---
name: "AuEvent"
section: "3nas"
platform: "linux"
package: "libaudio-dev"
version: "1.9.4-9"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/AuEvent"
---

# AuEvent(3nas)

event union

## Name

**AuEvent** - event union

## Structures

\#include \<audio/audiolib.h\>

typedef union \_AuEvent\
 {\
\
     int *type*;\
\
     **AuAnyEvent** *auany*;\
\
     **AuElementNotifyEvent** *auelementnotify*;\
\
     **AuMonitorNotifyEvent** *aumonitornotify*;\
\
     **AuGrabNotifyEvent** *augrabnotify*;\
\
     **AuErrorEvent** *auerror*;\
 }**AuEvent**;

## Members

- *type*

  Specifies the event type. Currently, the following event types are defined: **AuEventTypeElementNotify**, **AuEventTypeGrabNotify**, or **AuEventTypeMonitorNotify**.

- *auany*

  Specifies a generic event structure containing members common to all event types.

- *auelementnotify*

  Sent to client applications to notify them of a watermark condition or a state change.

- *aumonitornotify*

  Sent to client applications to notify them of monitor data.

- *augrabnotify*

  Not Implemented.

- *auerror*

  Sent to client applications to notify them of non-fatal errors encountered while processing requests.

## Description

Events are the principal mechanism for the server to communicate with a client application.

## See Also

audiolib - **Network Audio System** C Language Interface