GetLastError , FormatMessage 활용

LPVOID lpMsgBuf;
FormatMessage(
    FORMAT_MESSAGE_ALLOCATE_BUFFER |
    FORMAT_MESSAGE_FROM_SYSTEM |
    FORMAT_MESSAGE_IGNORE_INSERTS,
    NULL,
    GetLastError(),
    0, // Default language
    (LPTSTR) &lpMsgBuf,
    0,
    NULL
);
// Process any inserts in lpMsgBuf.
// ...
// Display the string.
MessageBox( NULL, (LPCTSTR)lpMsgBuf, LError, MB_OK | MB_ICONINFORMATION );
// Free the buffer.
LocalFree( lpMsgBuf );