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simon10k

DirectDraw Surfaces

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Is it ok to release surfaces after the main DirectDraw object has been destroyed I ask this because I have classes that use destructors (bitmap classes that managed surfaces), so for example, a global object will call its destructor when the application terminates (After I have destroyed my DirectDraw object which is not part of a class).

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It's ok to do, yes. When a surface is created, it'll increase the reference count of the DirectDraw (parent) object.

Microsoft recommends releasing things in the reverse order of destruction (I.e. your surface before the DirectDraw object), because it's a cleaner way of doing things (Think of it all like a stack), and I suppose it'll be easier on the memory manager.

But yeah, it's fine.

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a good idea whe you're starting a project is to impmement a quick reference count check at the end of the program (release the DX device). DX will tell you if you forgot to clean up any DX resources.

if ( m_pd3dDevice->Release() > 0L )
return DisplayErrorMsg ( D3DAPPERR_NONZEROREFCOUNT, MSGERR_APPMUSTEXIT );

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Also note that installing the debug runtimes will do the abolve automatically for you, and give you a lot more information in the debug output window.

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