void InformIfError() {
	LPTSTR msg;
	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
	FORMAT_MESSAGE_FROM_SYSTEM,
	NULL,
	GetLastError(),
	0,
	(LPTSTR)&msg,
	0,
	NULL);
	cout << "ERROR: " << msg << endl;
	LocalFree(msg);
}