---
title: allowsConcurrentViewDrawing
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nswindow/allowsconcurrentviewdrawing
---

# allowsConcurrentViewDrawing

A Boolean value that indicates whether the window allows multithreaded view drawing.

## Declaration

```swift
var allowsConcurrentViewDrawing: Bool { get set }
```

## Discussion

Discussion The value of this property is true if the window allows multithreaded view drawing; otherwise, false. The default value is true.

## See Also

### Drawing Windows

- [display()](appkit/nswindow/display().md)
- [displayIfNeeded()](appkit/nswindow/displayifneeded().md)
- [viewsNeedDisplay](appkit/nswindow/viewsneeddisplay.md)