IDirect3DExecuteBuffer Interface Method Groups
Your application uses the methods of the IDirect3DExecuteBuffer interface to set up and control a Direct3D execute buffer. The methods can be organized into the following groups:
Execute data GetExecuteData
IUnknown AddRef
Lock and unlock Lock
Miscellaneous Initialize
All COM interfaces inherit the IUnknown interface methods, which are listed in the "IUnknown" group above. These three methods allow additional interfaces to be added to the Direct3DExecuteBuffer object without affecting the functionality of the original interface.