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For anyone who has used the private CGS Framework ( or done the Genie Affect on there own, does anyone know why there is a brief flash of white just when it finishes the Genie minimize. I get this on the sample application as well. I cannot see anything that would be causing this.


No idea if this is your problem, but I’ve seen similar things happen when using OpenGL in a window that’s marked as One Shot. Undoing One Shot stops any flashing.


thanks for the help, unfortunately that did not fix the issue. I am not dealing with OpenGL either, just NSWindows, NSViews, NSImages, and NSImageBitmapRef’s.