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What are the differences between RedrawWindow and UpdateWindow in Win32?
Since they seem to have the same purpose to refresh a window, what are the differences?
RedrawWindowis typically used to force a redraw of the entire window (or some specified region within) right now.UpdateWindowwill force a redraw of only the update region of the window, i.e. that part of the window that has been invalidated (e.g. by callingInvalidateRect) since the last paint cycle.