I have a NSView with a sub view. I want to be able to redraw the sub view (call its drawRect) without redrawing the parent view. Is that possible?
When i case setNeedsDisplay on he sub view, drawRect of the parent view also called.
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I have a NSView with a sub view. I want to be able to redraw the sub view (call its drawRect) without redrawing the parent view. Is that possible?
When i case setNeedsDisplay on he sub view, drawRect of the parent view also called.
One thing you can do to reduce unnecessary drawing is overide
-isOpaqueand return YES.Of course, you should only do this if the subview is in fact opaque.