Phil Wright wrote:Second
You are right. The actual app button is draw by two halfs. The top half is usually in the window caption area and the bottom half in the actual ribbon control. So drawing the button involves two windows messages, one for the caption are and another for the ribbon control. Because they are not part of the same single windows message you see a flicker because one half is painted a fraction before the other. Not sure how to improve on that.
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