---
title: delegateCallbackQueue
framework: avfoundation
role: symbol
role_heading: Instance Property
path: avfoundation/avcapturedepthdataoutput/delegatecallbackqueue
---

# delegateCallbackQueue

A dispatch queue for delivering depth data.

## Declaration

```swift
var delegateCallbackQueue: dispatch_queue_t? { get }
```

## Discussion

Discussion This property is read-only. You set the delegate object and the dispatch queue for calling delegate methods together using the setDelegate(_:callbackQueue:) method.

## See Also

### Receiving captured depth data

- [setDelegate(_:callbackQueue:)](avfoundation/avcapturedepthdataoutput/setdelegate(_:callbackqueue:).md)
- [delegate](avfoundation/avcapturedepthdataoutput/delegate.md)
- [AVCaptureDepthDataOutputDelegate](avfoundation/avcapturedepthdataoutputdelegate.md)