interface IBindStatusCallback : IUnknown
{
    HRESULT GetBindInfo([out] DWORD* pgrfBINDF,
                        [in, out] BINDINFO* pbindinfo);
    HRESULT OnStartBinding([in] IBinding* pbinding);
    HRESULT GetPriority([out] LONG* pnPriority);
    HRESULT OnProgress([in] ULONG ulProgress, [in] ULONG ulProgressMax,
                       [in] ULONG ulStatusCode, [in] LPCWSTR szStatusText);
    HRESULT OnDataAvailable([in] DWORD grfBSC, [in] DWORD dwSize,
                            [in] IUnknown* punkStorage,
                            [in] FORMATETC* pformatetc,
                            [in] STGMEDIUM* pstgmed);
    HRESULT OnLowResource([in] DWORD dwReserved);
    HRESULT OnStopBinding([in] HRESULT hrStatus);
};