---
title: contextHelpModeDidActivateNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nshelpmanager/contexthelpmodedidactivatenotification
---

# contextHelpModeDidActivateNotification

Posted when the application enters context-sensitive help mode. This typically happens when the user holds down the Help key.

## Declaration

```swift
class let contextHelpModeDidActivateNotification: NSNotification.Name
```

## Discussion

Discussion The notification object is the help manager. This notification does not contain a userInfo dictionary. To observe this notification using Swift concurrency, use NSHelpManager.ContextHelpModeDidActivateMessage.

## See Also

### Notifications

- [contextHelpModeDidDeactivateNotification](appkit/nshelpmanager/contexthelpmodediddeactivatenotification.md)