C++判断Widows版本

我写了以下两个函数对当前Windows版本号进行判断, 你可以使用其中的任何一个:

1.

//Judge OS version's function and variable
typedef enum tagWin32SysType{
    Windows32s,
    WindowsNT3,
    Windows95,
    Windows98,
    WindowsME,
    WindowsNT4,
    Windows2000,
    WindowsXP,
    WindowsVista
}Win32SysType;

//Judge OS version
Win32SysType IsShellSysType()
{
    Win32SysType  ShellType;
    DWORD winVer;
    OSVERSIONINFO *osvi;

    winVer=GetVersion();
    if(winVer<0x80000000){/*NT */
        ShellType=WindowsNT3;
        osvi= (OSVERSIONINFO *)malloc(sizeof(OSVERSIONINFO));
        if (osvi!=NULL){
            memset(osvi,0,sizeof(OSVERSIONINFO));
            osvi->dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
            GetVersionEx(osvi);
            if(osvi->dwMajorVersion==4L)ShellType=WindowsNT4;
            else if(osvi->dwMajorVersion==5L&&osvi->dwMinorVersion==0L)ShellType=Windows2000;
            else if(osvi->dwMajorVersion==5L&&osvi->dwMinorVersion==1L)ShellType=WindowsXP;
            else if(osvi->dwMajorVersion==6L&&osvi->dwMinorVersion==0L)ShellType=WindowsVista;
            free(osvi);
        }
    }
    else if  (LOBYTE(LOWORD(winVer))<4)
        ShellType=Windows32s;
    else{
        ShellType=Windows95;
        osvi= (OSVERSIONINFO *)malloc(sizeof(OSVERSIONINFO));
        if (osvi!=NULL){
            memset(osvi,0,sizeof(OSVERSIONINFO));
            osvi->dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
            GetVersionEx(osvi);
            if(osvi->dwMajorVersion==4L&&osvi->dwMinorVersion==10L)ShellType=Windows98;
            else if(osvi->dwMajorVersion==4L&&osvi->dwMinorVersion==90L)ShellType=WindowsME;
            free(osvi);
        }
    }

    return ShellType;
} 

这是比较通用的一个, 你可以这样用它:

    Win32SysType SysType = IsShellSysType();
    if(SysType == WindowsVista ){}

2.

/**
* get current system version
* Windows2000/XP/......
*/
OSVERSIONINFO GetSystemVersion()
{
 OSVERSIONINFO osvi;
 osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 GetVersionEx(&osvi);

 return osvi;
}

这个简单, 我一般用它:

 //if system is XP,then do this if
if(&& GetSystemVersion().dwMajorVersion == 5 && GetSystemVersion().dwMinorVersion == 1){}