---
title: "canvasViewDrawingDidChange(_:)"
framework: pencilkit
role: symbol
role_heading: Instance Method
path: "pencilkit/pkcanvasviewdelegate/canvasviewdrawingdidchange(_:)"
---

# canvasViewDrawingDidChange(_:)

Tells the delegate that the contents of the current drawing changed.

## Declaration

```swift
optional func canvasViewDrawingDidChange(_ canvasView: PKCanvasView)
```

## Parameters

- `canvasView`: The canvas view whose contents changed.

## See Also

### Responding to drawing-related changes

- [canvasViewDidFinishRendering(_:)](pencilkit/pkcanvasviewdelegate/canvasviewdidfinishrendering(_:).md)