---
title: modeDidChange
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/notificationcenter/messageidentifier/modedidchange
---

# modeDidChange

## Declaration

```swift
static var modeDidChange: NotificationCenter.BaseMessageIdentifier<UIScreen.ModeDidChangeMessage> { get }
```

## See Also

### Identifying UIKit screen messages

- [brightnessDidChange](foundation/notificationcenter/messageidentifier/brightnessdidchange.md)
- [capturedDidChange](foundation/notificationcenter/messageidentifier/captureddidchange.md)
- [referenceDisplayModeStatusDidChange](foundation/notificationcenter/messageidentifier/referencedisplaymodestatusdidchange.md)