How can I fill a rect with an alpha color using CoreGraphics?
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by Rits Plasman
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Published on 2010-05-29T15:23:52Z
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2010/05/29
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In my drawRect method, I am drawing a PNG image. On top of that, I want to draw a rect with a 20% alpha color, like this:
[[UIColor colorWithWhite:0.0 alpha:0.2] set];
UIRectFill(rect);
The problem is, that the alpha property seems to get ignored. No alpha is applied at all, just a black rectangle is drawn. How can I fix this? Thanks in advance!
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