---
title: delegate
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/cametaldisplaylink/delegate
---

# delegate

An instance of a type your app implements that responds to the system’s callbacks.

## Declaration

```swift
weak var delegate: (any CAMetalDisplayLinkDelegate)? { get set }
```

## See Also

### Configuring a Display Link

- [preferredFrameRateRange](quartzcore/cametaldisplaylink/preferredframeraterange.md)
- [preferredFrameLatency](quartzcore/cametaldisplaylink/preferredframelatency.md)