---
title: progressMarkNotification
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsanimation/progressmarknotification
---

# progressMarkNotification

Posted when the current progress of a running animation reaches one of its progress marks.

## Declaration

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

## Discussion

Discussion The notification object is a running NSAnimation object. The userInfo dictionary contains the current progress mark, accessed via the key NSAnimationProgressMark.

## See Also

### Related Documentation

- [animation(_:didReachProgressMark:)](appkit/nsanimationdelegate/animation(_:didreachprogressmark:).md)