I am working on a program that conducts basic smoke tests and acceptance tests for developing Windows applications. Part of what he does is snapshots of the top-level window (s) of the application when it (they) first appears. He does this by starting the process, waiting for input in standby mode, listing top-level windows, and then getting the DC window and blitting from it.
It turns out that the first appearance of the top-level window is animated by default - it disappears and expands to its actual size - at least in Windows 7. Screenshots taken during the animation either do not skip the window frame or the frame is reduced and partially transparent.
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