---
title: contextName
framework: audiotoolbox
role: symbol
role_heading: Instance Property
path: audiotoolbox/auaudiounit/contextname
---

# contextName

Information about the host context in which the audio unit is connected, for display in the audio unit’s view.

## Declaration

```swift
var contextName: String? { get set }
```

## Discussion

Discussion For example—a host could set “track 3” as the context, so that the audio unit’s view could then display “My audio unit on track 3”. This version 3 property is bridged to the version 2 kAudioUnitProperty_ContextName API.

## See Also

### Providing Data to the Host

- [musicalContextBlock](audiotoolbox/auaudiounit/musicalcontextblock.md)
- [transportStateBlock](audiotoolbox/auaudiounit/transportstateblock.md)
- [supportsMPE](audiotoolbox/auaudiounit/supportsmpe.md)
- [AUHostMusicalContextBlock](audiotoolbox/auhostmusicalcontextblock.md)
- [AUHostTransportStateBlock](audiotoolbox/auhosttransportstateblock.md)