---
title: didUpdateTrackingAreasNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsview/didupdatetrackingareasnotification
---

# didUpdateTrackingAreasNotification

Posted whenever a view recalculates its tracking areas.

## Declaration

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

## Discussion

Discussion It is sent after the view receives updateTrackingAreas().

## See Also

### Managing Tracking Areas

- [addTrackingArea(_:)](appkit/nsview/addtrackingarea(_:).md)
- [removeTrackingArea(_:)](appkit/nsview/removetrackingarea(_:).md)
- [trackingAreas](appkit/nsview/trackingareas.md)
- [updateTrackingAreas()](appkit/nsview/updatetrackingareas().md)