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Why does my full screen DirectDraw application drop frames at times, displaying a black screen momentarily?

April 26, 2017application Black DirectDraw displaying drop frames momentarily screen times

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Why does my full screen DirectDraw application drop frames at times, displaying a black screen momentarily?

1 Answer

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This can happen when a WM_PAINT message is received by the application. This triggers a WM_ERASEBKGND message, calling for the client surface to be erased. The default Windows procedure will clear to the currently set background brush, thus clearing the screen.