pub unsafe extern "system" fn CoSetProxyBlanket( pProxy: *mut IUnknown, dwAuthnSvc: DWORD, dwAuthzSvc: DWORD, pServerPrincName: *mut OLECHAR, dwAuthnLevel: DWORD, dwImpLevel: DWORD, pAuthInfo: RPC_AUTH_IDENTITY_HANDLE, dwCapabilities: DWORD) -> HRESULT