How to speed up set pixel bitmap?

[zalan]

SOLVED!
I just realize CaptureImageOnScreen using

Function CaptureImageOnScreen

Code:

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__MemBmp b
if(!b.Create(width height 1 x y)) ret

which is using srcdc of current screen, i think

while my function not using any srcdc

Function BackgroundScreenshot

Code:

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__MemBmp m.Create(width height)

so i change it to using dc of window that i want to capture, then it works like CaptureImageOnScreen. Very fast, it finished at same second

Function BackgroundScreenshot

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__MemBmp m.Create(width height GetDC(hwnd) x y)

and because it dont need to get and set pixel by pixel anymore, so i remove the dll declaration