formatmessage

LPCTSTR GetErrorMessage( DWORD errCode ){    static LPCTSTR pBuffer = NULL;if (pBuffer) LocalFree( pBuffer );FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM  |       FORMAT_MESSAGE_ALLOCATE_BUFFER,         0,  errCode,  0,   (LPCTSTR)&pBuffer,  0,  0);return pBuffer;  }