---
title: kCVReturnInvalidDisplay
framework: corevideo
role: symbol
role_heading: Global Variable
path: corevideo/kcvreturninvaliddisplay
---

# kCVReturnInvalidDisplay

The display specified when creating a display link is invalid.

## Declaration

```swift
var kCVReturnInvalidDisplay: CVReturn { get }
```

## See Also

### Display Link

- [kCVReturnDisplayLinkAlreadyRunning](corevideo/kcvreturndisplaylinkalreadyrunning.md)
- [kCVReturnDisplayLinkNotRunning](corevideo/kcvreturndisplaylinknotrunning.md)
- [kCVReturnDisplayLinkCallbacksNotSet](corevideo/kcvreturndisplaylinkcallbacksnotset.md)