---
title: isAnyDisplaySynchronizedToLockedGenlockSignal
framework: Core Media
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 27.0+, macOS 27.0+]
path: coremedia/cmclock/displaygenlockmodechangedmessage/isanydisplaysynchronizedtolockedgenlocksignal
---

# isAnyDisplaySynchronizedToLockedGenlockSignal

Indicates whether at least one display is synchronized to a locked external genlock signal.

## Declaration

```swift
let isAnyDisplaySynchronizedToLockedGenlockSignal: Bool
```