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CGBitmapRef and User Space Coordinates

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CGBitmapRef and User Space Coordinates

Subject: CGBitmapRef and User Space Coordinates
From: "Carter R. Harrison" <email@hidden>
Date: Tue, 15 Apr 2008 22:52:32 -0400

Hi All,

I have a CGBitmapRef that I am using as a backing store for my NSView subclass. The CGBitmapRef has the same dimensions as my NSView. Each time I draw to the backing store, I call my view's setNeedsDisplayInRect: method to invalidate the area in which I have drawn. Is it necessary to convert the rectangle to which I have drawn into user space coordinates before feeding them into setNeedsDisplayInRect:? It seems like I can get away without doing this because my view is the same size as the backing store, but I'm getting some weird behavior (things drawing correctly but in the wrong area). Thanks in advance.

-Carter
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