---
title: CMClock.DisplayGenlockModeChangedMessage
framework: Core Media
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 27.0+, macOS 27.0+]
path: coremedia/cmclock/displaygenlockmodechangedmessage
---

# CMClock.DisplayGenlockModeChangedMessage

A message delivered when the display mode changes from genlock to non-genlock or vice versa.

## Declaration

```swift
struct DisplayGenlockModeChangedMessage
```

## Topics

### Instance Properties

- [isAnyDisplaySynchronizedToLockedGenlockSignal](coremedia/cmclock/displaygenlockmodechangedmessage/isanydisplaysynchronizedtolockedgenlocksignal.md)

## Relationships

### Conforms To

- [NotificationCenter.MainActorMessage](foundation/notificationcenter/mainactormessage.md)
- [SendableMetatype](swift/sendablemetatype.md)