---
title: channelID
framework: kernel
role: pseudoSymbol
path: kernel/ioaudiocontrol/channelid
---

# channelID

## Declaration

```occ
UInt32 channelID;
```

## Overview

Overview The ID of the channel this control affects - may be kIOAudioControlChannelIDAll if it represents all channels.

## See Also

### Instance Variables

- [workLoop](kernel/ioaudiocontrol/workloop.md)
- [userClients](kernel/ioaudiocontrol/userclients.md)
- [isStarted](kernel/ioaudiocontrol/isstarted.md)
- [controlID](kernel/ioaudiocontrol/controlid.md)
- [commandGate](kernel/ioaudiocontrol/commandgate.md)