[ComImport(),
    Guid("00021500-0000-0000-C000-000000000046"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IQueryInfo
    {

        [PreserveSig]
        void GetInfoTip(
            int dwFlags,
            [In, Out, MarshalAs(UnmanagedType.LPWStr)]
            ref string ppwszTip);

        [PreserveSig]
        void GetInfoFlags(IntPtr pdwFlags);
    }