---
title: activeSpaceDidChange
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/notificationcenter/messageidentifier/activespacedidchange
---

# activeSpaceDidChange

## Declaration

```swift
static var activeSpaceDidChange: NotificationCenter.BaseMessageIdentifier<NSWorkspace.ActiveSpaceDidChangeMessage> { get }
```

## See Also

### Identifying AppKit workspace messages

- [didHideApplication](foundation/notificationcenter/messageidentifier/didhideapplication.md)
- [didUnhideApplication](foundation/notificationcenter/messageidentifier/didunhideapplication.md)
- [willLaunchApplication](foundation/notificationcenter/messageidentifier/willlaunchapplication.md)
- [didLaunchApplication](foundation/notificationcenter/messageidentifier/didlaunchapplication.md)
- [willSleep](foundation/notificationcenter/messageidentifier/willsleep.md)
- [didWake](foundation/notificationcenter/messageidentifier/didwake.md)
- [didTerminateApplication](foundation/notificationcenter/messageidentifier/didterminateapplication.md)
- [didMountVolume](foundation/notificationcenter/messageidentifier/didmountvolume.md)
- [willUnmountVolume](foundation/notificationcenter/messageidentifier/willunmountvolume.md)
- [didUnmountVolume](foundation/notificationcenter/messageidentifier/didunmountvolume.md)
- [didActivateApplication](foundation/notificationcenter/messageidentifier/didactivateapplication.md)
- [didDeactivateApplication](foundation/notificationcenter/messageidentifier/diddeactivateapplication.md)
- [didRenameVolume](foundation/notificationcenter/messageidentifier/didrenamevolume.md)
- [sessionDidBecomeActive](foundation/notificationcenter/messageidentifier/sessiondidbecomeactive.md)
- [sessionDidResignActive](foundation/notificationcenter/messageidentifier/sessiondidresignactive.md)