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

# canvasViewDidBeginUsingTool(_:)

Tells the delegate that the user started a new drawing sequence with the currently selected tool.

## Declaration

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

## Parameters

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

## See Also

### Responding to new event sequences

- [canvasViewDidEndUsingTool(_:)](pencilkit/pkcanvasviewdelegate/canvasviewdidendusingtool(_:).md)