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# referenceDisplayModeStatusDidChangeNotification

A notification that posts when there’s a change to a screen’s reference display mode status.

```
nonisolated class let referenceDisplayModeStatusDidChangeNotification: NSNotification.Name
```

## Discussion

The notification’s <doc://com.apple.documentation/documentation/Foundation/Notification/object> is the changed screen. Use that object’s [`referenceDisplayModeStatus`](/documentation/UIKit/UIScreen/referenceDisplayModeStatus-swift.property) property to retrieve the new status.

The system posts this notification on the main actor.

---

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