[C++] Windows 버전 확인

#pragma comment(lib, "Version.lib" )

std::wstring GetOsVersion()
{
	// https://stackoverflow.com/questions/32115255/c-how-to-detect-windows-10

	wchar_t path[200] = L"C:\\Windows\\System32\\kernel32.dll";
	DWORD dwDummy;
	DWORD dwFVISize = GetFileVersionInfoSize(path, &dwDummy);
	LPBYTE lpVersionInfo = new BYTE[dwFVISize];
	if (GetFileVersionInfo(path, 0, dwFVISize, lpVersionInfo) == 0)
	{
		return FALSE;
	}

	UINT uLen;
	VS_FIXEDFILEINFO* lpFfi;
	BOOL bVer = VerQueryValue(lpVersionInfo, L"\\", (LPVOID*)&lpFfi, &uLen);

	if (!bVer || uLen == 0)
	{
		return FALSE;
	}
	DWORD dwProductVersionMS = lpFfi->dwProductVersionMS;
	if (HIWORD(dwProductVersionMS) == 10 && LOWORD(dwProductVersionMS) == 0)
	{
		return L"Windows 10";
	}
	else if (HIWORD(dwProductVersionMS) == 6 && LOWORD(dwProductVersionMS) == 3)
	{
		return L"Windows 8.1";
	}
	else if (HIWORD(dwProductVersionMS) == 6 && LOWORD(dwProductVersionMS) == 2)
	{
		return L"Windows 8\n";
	}
	else if (HIWORD(dwProductVersionMS) == 6 && LOWORD(dwProductVersionMS) == 1)
	{
		return L"Windows 7 or Windows Server 2008 R2";
	}
	else if (HIWORD(dwProductVersionMS) == 6 && LOWORD(dwProductVersionMS) == 0)
	{
		return L"Windows Vista or Windows Server 2008";
	}
	else if (HIWORD(dwProductVersionMS) == 5 && LOWORD(dwProductVersionMS) == 2)
	{
		return L"Windows Server 2003";
	}
	else if (HIWORD(dwProductVersionMS) == 5 && LOWORD(dwProductVersionMS) == 1)
	{
		return L"Windows Server XP";
	}
	else if (HIWORD(dwProductVersionMS) == 5 && LOWORD(dwProductVersionMS) == 0)
	{
		return L"Windwos 2000";
	}

	return L"UNKNOWN";
}