---
title: kColorSyncRegistrationUpdateWindowServer
framework: colorsync
role: symbol
role_heading: Global Variable
platforms: [Mac Catalyst 13.0+, macOS 10.13+]
path: colorsync/kcolorsyncregistrationupdatewindowserver
---

# kColorSyncRegistrationUpdateWindowServer

A notification concerning the window server’s device registration.

## Declaration

```swift
var kColorSyncRegistrationUpdateWindowServer: Unmanaged<CFString>!
```

## See Also

### Observing device notifications

- [kColorSyncDeviceProfilesNotification](colorsync/kcolorsyncdeviceprofilesnotification.md)
- [kColorSyncDeviceRegisteredNotification](colorsync/kcolorsyncdeviceregisterednotification.md)
- [kColorSyncDeviceUnregisteredNotification](colorsync/kcolorsyncdeviceunregisterednotification.md)
- [kColorSyncDisplayDeviceProfilesNotification](colorsync/kcolorsyncdisplaydeviceprofilesnotification.md)