        virtual /* [helpstring] */ HRESULT STDMETHODCALLTYPE 
            SetActiveDiscMasterFormat( 
            /* [in] */ REFIID riid,
            /* [iid_is][out] */ void **ppUnk) = 0;
        
        virtual /* [helpstring] */ HRESULT STDMETHODCALLTYPE 
            EnumDiscRecorders( 
            /* [out] */ IEnumDiscRecorders **ppEnum) = 0;
        
        virtual /* [helpstring] */ HRESULT STDMETHODCALLTYPE 
            GetActiveDiscRecorder( 
            /* [out] */ IDiscRecorder **ppRecorder) = 0