Does Quake 4 and Doom 3 uses DirectInput in windows?

I know in Linux it uses SDL. But in windows does it use DirectInput? Btw, does the GetKeyState in WinUser.h sucks?

If I am not mistaken both of these games use OpenGL which works in other environments than Windows (i.e. I strongly believe they are not using SDL...)

And what kind of question is that "does the GetKeyState in WinUser.h sucks" ?

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If I am not mistaken both of these games use OpenGL which works in other environments than Windows (i.e. I strongly believe they are not using SDL...)

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Ok I found a good source. It initialize DirectInput so I think it uses that. Here!

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And what kind of question is that "does the GetKeyState in WinUser.h sucks" ?

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I'm sorry if it is a bit off topic but I'm creating an input class for my multi-platform game engine
so I ask if the GetKeyState is good enough.

But I saw that most of the games uses directinput ( direct3d or not ). I think I'll use the same for my engine.

Forget GetKeyState. It doesn't do what you think it does.