如何得到操作系统版本信息，用GetSystemInfo好象不行？

Question

我想运行软件时知道系统是是98 的 还是2000的，或者XP的，用什么函数啊？

Answer 1

OSVERSIONINFO osinfo;
//osinfo.dwOSVersionInfoSize =sizeof(OSVERSIONINFO);
if(GetVersionEx(&osinfo) != 0)
{
AfxMessageBox("Can not obtain operating system information!");
return TRUE;
}
if(osinfo.dwPlatformId == VER_PLATFORM_WIN32_NT)   
{
AfxMessageBox("Operating system is Windows NT!");
}
else if(osinfo.dwPlatformId == VER_PLATFORM_WIN32s)
{
AfxMessageBox("Operating system is Windows 3X!");
}
else if(osinfo.dwPlatformId  == VER_PLATFORM_WIN32_WINDOWS)
{
if(osinfo.dwMinorVersion ==0) AfxMessageBox("Operating system is Windows 95!");
else AfxMessageBox("Operating system is Windows 98!");
}
else 
{
AfxMessageBox("Can not identify the type of Operating system!");
GetDlgItem(IDOK)->EnableWindow(FALSE);
}
为什么得到的总是 Can not identify the type of Operating system！错在哪里啊？

Answer 2

//osinfo.dwOSVersionInfoSize =sizeof(OSVERSIONINFO);
如果去掉//，则Can not obtain operating system information，干脆不能获得信息。

Answer 3

typedef enum tagWin32SysType{
        Windows32s,
        WindowsNT3,
        Windows95,
        Windows98,
        WindowsME,
        WindowsNT4,
        Windows2000,
        WindowsXP
}Win32SysType;
//判断操作系统涵数及变量，jingzhou xu
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&#38;&#38;osvi->
dwMinorVersion==0L)ShellType=Windows2000;
                        else 
if(osvi->dwMajorVersion==5L&#38;&#38;osvi->
dwMinorVersion==1L)ShellType=WindowsXP;
                        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&#38;&#38;osvi->
                dwMinorVersion==10L)ShellType=Windows98;
                        else 
if(osvi->dwMajorVersion==4L&#38;&#38;osvi->
dwMinorVersion==90L)ShellType=WindowsME;
                        free(osvi);
                }
        }
        return ShellType;
}