---
title: CLKComplicationPrincipalClass
framework: bundleresources
role: symbol
role_heading: Property List Key
path: bundleresources/information-property-list/clkcomplicationprincipalclass
---

# CLKComplicationPrincipalClass

The name of the class that implements the complication data source protocol.

## Discussion

Discussion Xcode automatically includes this key in the information property list when you modify the WatchKit extension’s data source (General > Complication Configuration > Data Source class).

## See Also

### Launch

- [NSPrincipalClass](bundleresources/information-property-list/nsprincipalclass.md)
- [CFBundleExecutable](bundleresources/information-property-list/cfbundleexecutable.md)
- [LSEnvironment](bundleresources/information-property-list/lsenvironment.md)
- [UIApplicationShortcutItems](bundleresources/information-property-list/uiapplicationshortcutitems.md)