Function OleConvertIStorageToOLESTREAMEx 

pub unsafe extern "stdcall" fn OleConvertIStorageToOLESTREAMEx(
    pstg: LPSTORAGE,
    cfFormat: CLIPFORMAT,
    lWidth: LONG,
    lHeight: LONG,
    dwSize: DWORD,
    pmedium: LPSTGMEDIUM,
    polestm: LPOLESTREAM,
) -> HRESULT