1823     virtual HRESULT WINAPI IsFormatSupported(const GUID *pFormat) = 0;
1824     virtual HRESULT WINAPI QueryPreferredFormat(GUID *pFormat) = 0;
1825     virtual HRESULT WINAPI GetTimeFormat(GUID *pFormat) = 0;
1826     virtual HRESULT WINAPI IsUsingTimeFormat(const GUID *pFormat) = 0;
1827     virtual HRESULT WINAPI SetTimeFormat(const GUID *pFormat) = 0;
1847       HRESULT (WINAPI *IsFormatSupported)(IMediaSeeking *This,const GUID *pFormat);
1848       HRESULT (WINAPI *QueryPreferredFormat)(IMediaSeeking *This,GUID *pFormat);
1849       HRESULT (WINAPI *GetTimeFormat)(IMediaSeeking *This,GUID *pFormat);
1850       HRESULT (WINAPI *IsUsingTimeFormat)(IMediaSeeking *This,const GUID *pFormat);
1851       HRESULT (WINAPI *SetTimeFormat)(IMediaSeeking *This,const GUID *pFormat);
1873 #define IMediaSeeking_IsFormatSupported(This,pFormat) (This)->lpVtbl->IsFormatSupported(This,pForma…  argument
1874 …define IMediaSeeking_QueryPreferredFormat(This,pFormat) (This)->lpVtbl->QueryPreferredFormat(This,…  argument
1875 #define IMediaSeeking_GetTimeFormat(This,pFormat) (This)->lpVtbl->GetTimeFormat(This,pFormat)  argument
1876 #define IMediaSeeking_IsUsingTimeFormat(This,pFormat) (This)->lpVtbl->IsUsingTimeFormat(This,pForma…  argument
1877 #define IMediaSeeking_SetTimeFormat(This,pFormat) (This)->lpVtbl->SetTimeFormat(This,pFormat)  argument
1894   HRESULT WINAPI IMediaSeeking_IsFormatSupported_Proxy(IMediaSeeking *This,const GUID *pFormat);
1896   HRESULT WINAPI IMediaSeeking_QueryPreferredFormat_Proxy(IMediaSeeking *This,GUID *pFormat);
1898   HRESULT WINAPI IMediaSeeking_GetTimeFormat_Proxy(IMediaSeeking *This,GUID *pFormat);
1900   HRESULT WINAPI IMediaSeeking_IsUsingTimeFormat_Proxy(IMediaSeeking *This,const GUID *pFormat);
1902   HRESULT WINAPI IMediaSeeking_SetTimeFormat_Proxy(IMediaSeeking *This,const GUID *pFormat);