直接上代码如下：

enum Win32Type{
	Win32s,
	WinNT3,
	Win95,
	Win98,
	WinME,
	WinNT4,
	Win2000,
	WinXP,
	VISTA,
	WIN7
};
static Win32Type GetSysType()
{
	OSVERSIONINFO Version;
	ZeroMemory(&Version,sizeof(OSVERSIONINFO));
	Version.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
	GetVersionEx(&Version); 
	if (Version.dwPlatformId==VER_PLATFORM_WIN32_NT)  
	{
		if((Version.dwMajorVersion==5)&&(Version.dwMinorVersion==0))
		{
			return Win2000;
		}else if((Version.dwMajorVersion==5)&&(Version.dwMinorVersion>0))
		{
			return WinXP;
		}else if((Version.dwMajorVersion==6)&&(Version.dwMinorVersion==0))
			return VISTA;
		else if((Version.dwMajorVersion>=6))
			return WIN7;
	}
	else if(Version.dwPlatformId==VER_PLATFORM_WIN32_WINDOWS)
	{
		if ((Version.dwMajorVersion == 4) && (Version.dwMinorVersion < 90) )
		{
			return Win98;
		}
		if ((Version.dwMajorVersion == 4) && (Version.dwMinorVersion >= 90) )
		{
			return WinME;
		}
	}
	return WinXP;
}