取得目前的作業系統

使用System::OperatringSystem類別。
可參考(http://msdn.microsoft.com/zh-tw/library/system.operatingsystem.aspx)
例子如下：
System::OperatingSystem^ osver = System::Environment::OSVersion;

32bit OS(XP, Vista, 7):
osver->Platform == System::PlatformID::Win32NT
XP:
osver->Version->Major == 5 && osver->Version->Minor == 1 (Major = 5, Minor = 1)
Vista:
osver->Version->Major == 6 && osver->Version->Minor == 0 (Major = 6, Minor = 0)
7:
osver->Version->Major == 6 && osver->Version->Minor == 1 (Major = 6, Minor = 1)