is screenshotting by DirectDraw faster than GDI way?

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just to save some time, probably anybody tried this or saw somewhere related info.

asking about DirectDraw and not about DirectX because I need to support Win2000 and up, and I cannot install DirectX on target PC

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Andriy Tylychko On BEST ANSWER

tried capturing by Direct3D and compared with GDI way. Results are not unambiguous. On my Win7 x64 with rather good video card D3D way shows ~2 times performance boost. On my WinXP 32bits laptop with not-integrated but old video card D3D works much much much longer. On another WinXP (I don't know any hardware details) D3D works almost 2 times slower.