Resize OpenGL Window lags


I have a simple example that only clears and swaps.

If I resize the window with the mouse I see a “gap” on the right and/or bottom. If I resize the window really fast then the gap will be bigger.

How can I remove this effect?

setup: intel hd3000, windows 8

Make sure you app is not servicing window erase background events - eg an mfc app will do this by default.

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