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# setNeedsDisplay()

Marks the receiver as needing redisplay (assuming automatic display is enabled).

```
func setNeedsDisplay()
```

## Discussion

This method also recalculates the dimensions of the control as needed.

## See Also

[`needsDisplay`](/documentation/AppKit/NSView/needsDisplay)

A Boolean value that determines whether the view needs to be redrawn before being displayed.


---

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