IDirect3DRMViewportArray Interface Method Groups
Applications use the methods of the IDirect3DRMViewportArray interface to organize viewport objects. The methods can be organized into the following groups:
Information GetElement
IUnknown AddRef
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 Direct3DRMViewportArray object without affecting the functionality of the original interface. In addition, the IDirect3DRMViewportArray interface inherits the following methods from the IDirect3DRMObject interface:
The Direct3DRMViewportArray object is obtained by calling the IDirect3DRM::CreateFrame method.