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Windows does some strange things [Dec. 8th, 2004|11:23 pm]
At work I was debugging some code and ended up single stepping some GDI rendering. So I watched GDI Render a normal file dialog, piece by piece. The odd thing was after drawing the dialog, it then went and redrew all the other windows (that were underneath the dialog) and then the dialog again! I only had about 6 simple windows on screen this time but if that's what it does everytime a windows appears, I can see why Windows is slow sometimes.