Home/ Questions/Q 765369
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-14T16:52:47+00:00

I have seen many posts about this problem but didn’t get an answer. I

  • 0

I have seen many posts about this problem but didn’t get an answer. I have a controller which view is added to the main window. The controller’s view has a subview which has a drawRect. The problem is that this function is never called even if I call [self setNeedsDisplay].

Thanks

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    It is -(void)drawRect:(CGRect)rect right? Make sure the method signature is correct, and you don’t omit the rect argument even if you don’t use it.

    -setNeedsDisplay should be called the the subview, not self.

    Also, -setNeedsDisplay won’t call -drawRect: immediately. It only flushes the graphics cache so that -drawRect: is forced to be called in the next update of the frame.

    • 0