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# NSView.NeedsDisplay Property

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

NeedsDisplay as Boolean {Read and Write}

#### Remarks

Whenever the data or state affecting the view’s appearance changes, set this property to True. This marks the view as needing to update its display. On the next pass through the app’s event loop, the view is automatically redisplayed.

#### See Also

NSView Class