---
title: selectionDidChangeNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nscombobox/selectiondidchangenotification
---

# selectionDidChangeNotification

Posted after the pop-up list selection of the NSComboBox changes.

## Declaration

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

## Discussion

Discussion The notification object is the NSComboBox whose selection changed. This notification does not contain a userInfo dictionary. To observe this notification using Swift concurrency, use NSComboBox.SelectionDidChangeMessage.

## See Also

### Notifications

- [selectionIsChangingNotification](appkit/nscombobox/selectionischangingnotification.md)
- [willDismissNotification](appkit/nscombobox/willdismissnotification.md)
- [willPopUpNotification](appkit/nscombobox/willpopupnotification.md)