# `GlyphsToolDraw drawPreview:`

*Instance Method*

Draw something is the preview

## Declaration

```swift
optional func drawPreview(_ previewView: NSView)
```

```objc
- (void) drawPreview:(NSView *) previewView;
```

```python
drawPreview_(previewView: NSView)
```

## Parameters

- `previewView` — The PreviewView to draw in

## Discussion

If you implement this method, the default preview drawing will be deactivated