Ну.... Дык... Вроде ж писал.... :)
Вот она... Совесть:
Win XP SP3
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With redrawing: 4,3
Without redrawing: 0,5
Redraw slowdown: 7,9
Save: 7,9
Open: 14,4
Export: 7,2
Import: 4,2
Work with bitmaps: 14,1
Win7 64-bit
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With redrawing: 5,7
Without redrawing: 1
Redraw...