internal enum NtStatusErrors
    {
        NT_STATUS_NO_MEMORY = unchecked((int)0xC0000017)
    }

    /// <summary>
    /// HRESULT
    /// </summary>
    /// <ExternalAPI/>
    // [StructLayout(LayoutKind.Sequential)]
    internal struct HRESULT
    {
        /// <summary>
        /// If the result is not a success, then throw the appropriate exception.
        /// </summary>
        /// <param name="hr"></param>
        /// <ExternalAPI/>
        public static void Check(int hr)
        {
            if (hr >= 0)
            {
                // The call succeeded, don't bother calling Marshal.ThrowExceptionForHr
                return;
            }
            else
            {
                throw ConvertHRToException(hr);
            }
        }

        [SecuritySafeCritical]
        internal static Exception ConvertHRToException(int hr)
        {
          // 忽略其他代码
                switch (hr)
                {
                    case (int) NtStatusErrors.NT_STATUS_NO_MEMORY:
                        return new System.OutOfMemoryException();
                }
          // 忽略其他代码
      }