---
title: isPrimaryConstituentDeviceSwitchingBehaviorLockedWithDeviceSupported
framework: AVFoundation
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+]
path: avfoundation/avcapturedevice/isprimaryconstituentdeviceswitchingbehaviorlockedwithdevicesupported
---

# isPrimaryConstituentDeviceSwitchingBehaviorLockedWithDeviceSupported

Whether locking to a particular primary constituent device is supported.

## Declaration

```swift
var isPrimaryConstituentDeviceSwitchingBehaviorLockedWithDeviceSupported: Bool { get }
```

## Discussion

Discussion This property returns true if setPrimaryConstituentDeviceSwitchingBehaviorLockedWith(_:) is supported.