void LErr(TCHAR szFunc[] = NULL, DWORD dwErr = 0)
{
	/*
		szFunc ... Function Name
		dwErr ... Error Code (it ccan be obtained by GetLastError() or sth)
	*/

	LPVOID lpMsgBuf;
	TCHAR szMsg[4096] = { '\0' };

	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
		FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwErr,
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPTSTR)&lpMsgBuf, 0, NULL);

	swprintf_s(szMsg, 4096, _T("%s\r\n0x%08X (Dec:%u)"), lpMsgBuf, dwErr, dwErr);
	
	//MessageBox(NULL, szMsg, NULL, MB_OK);
}