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Direct 3D Surface

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Hi there. I have just started with SURFACES chapter. I am wondering why do we declare like pointers. That is:
	IDirect3DSurface9* surface;
	IDirect3DSurface9* backbuffer;
Why don't we declare them just like normal variables? Thank you, Skinner

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Because what you are making is not actually an IDirect3DSurface9, but rather an object which has an IDirect3DSurface9 interface available.

This question and your previous one lead me to believe that you're not familiar with COM, on which DirectX is based. I think you'll find this to be a very useful read.

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