---
title: "annotationsChanged(on:)"
framework: pdfkit
role: symbol
role_heading: Instance Method
path: "pdfkit/pdfview/annotationschanged(on:)"
---

# annotationsChanged(on:)

Tells the PDF view that an annotation on the specified page has changed.

## Declaration

```swift
func annotationsChanged(on page: PDFPage)
```

## Discussion

Discussion When the PDFView object receives this message, it rescans for tool tips and pop-ups and informs the PDFThumbailView objects so the thumbnail images can be redrawn.

## See Also

### Working with Annotation Actions

- [Link Annotations](pdfkit/link-annotations.md)