Function GetSysError

Src/MergeApp.cpp:9–32

Get user language description of error, if available

// Get user language description of error, if available
String GetSysError(int nerr /* =-1 */)
{
	if (nerr == -1)
		nerr = GetLastError();
	LPVOID lpMsgBuf;
	String str = _T("?");
	if (FormatMessage( 
		FORMAT_MESSAGE_ALLOCATE_BUFFER | 
		FORMAT_MESSAGE_FROM_SYSTEM | 
		FORMAT_MESSAGE_IGNORE_INSERTS,
		nullptr,
		nerr,
		0, // Default language
		(tchar_t*) &lpMsgBuf,
		0,
		nullptr 
		))
	{
		str = (const tchar_t*)lpMsgBuf;
		// Free the buffer.
		LocalFree( lpMsgBuf );
	}
	return str;
}

/**
 * @brief Get Options Manager.