Applications use the methods of the IDirectDrawSurfaceinterface to create DirectDrawSurfaceobjects and work with system-level variables.

IDirectDraw::CreateSurfacewill return a fully supported IDirectDrawSurfaceinterface pointer.

You cannot obtain the IDirectDrawSurfaceinterface directly from CreateSurface; use the QueryInterfacemethod to retrieve it.

The methods of the IDirectDrawSurfaceinterface can be organized into the following groups:

The IDirectDrawSurfaceinterface, like all COM interfaces, inherits the IUnknowninterface methods.

The IUnknowninterface supports the following three methods:

You can use the LPDIRECTDRAWSURFACEdata type to declare variables that point to various DirectDrawSurfaceobject interfaces.

The Ddraw.h header file declares this data type with the following code.

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typedef struct IDirectDrawSurface FAR *LPDIRECTDRAWSURFACE;

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