首先看一看函數原型:
- BOOL GetVersionEx(POSVERSIONINFO pVersionInformation);
- typedef struct {
- DWORD dwOSVersionInfoSize; //在使用GetVersionEx之前要將此初始化爲結構的大小
- DWORD dwMajorVersion; //系統主版本號
- DWORD dwMinorVersion; //系統次版本號
- DWORD dwBuildNumber; //系統構建號
- DWORD dwPlatformId; //系統支持的平臺
- TCHAR szCSDVersion[128]; //系統補丁包的名稱
- WORD wServicePackMajor; //系統補丁包的主版本
- WORD wServicePackMinor; //系統補丁包的次版本
- WORD wSuiteMask; //標識系統上的程序組
- BYTE wProductType; //標識系統類型
- BYTE wReserved; //保留,未使用
- } OSVERSIONINFOEX, *POSVERSIONINFOEX;
接着在調用函數之前先初始化結構的大小並調用函數,返回true表示成功:
- OSVERSIONINFOEX os;
- os.dwOSVersionInfoSize=sizeof(os);
- if(!GetVersionEx((OSVERSIONINFO *)&os))
- {
- return FALSE;
- }
函數調用成功以後就可以通過OSVERSIONINFOEX來查看系統的版本信息了。
根據微軟操作系統編號發現windows 8 對應的windows version number是6.2
如下:
Operating system Version number
Windows 8 6.2
Windows 7 6.1
Windows Server 2008 R2 6.1
Windows Server 2008 6.0
Windows Vista 6.0
Windows Server 2003 R2 5.2
Windows Server 2003 5.2
Windows XP 5.1
Windows 2000 5.0
下面是一個通過系統版本來判斷操作系統名稱的例子:
- CString getSystemName()
- {
- SYSTEM_INFO info; //用SYSTEM_INFO結構判斷64位AMD處理器
- GetSystemInfo(&info); //調用GetSystemInfo函數填充結構
- OSVERSIONINFOEX os;
- os.dwOSVersionInfoSize=sizeof(OSVERSIONINFOEX);
- if(GetVersionEx((OSVERSIONINFO *)&os))
- {
- CString vname;
- //下面根據版本信息判斷操作系統名稱
- switch(os.dwMajorVersion){ //判斷主版本號
- case 4:
- switch(os.dwMinorVersion){ //判斷次版本號
- case 0:
- if(os.dwPlatformId==VER_PLATFORM_WIN32_NT)
- vname=_T("Microsoft Windows NT 4.0"); //1996年7月發佈
- else if(os.dwPlatformId==VER_PLATFORM_WIN32_WINDOWS)
- vname=_T("Microsoft Windows 95");
- break;
- case 10:
- vname=_T("Microsoft Windows 98");
- break;
- case 90:
- vname=_T("Microsoft Windows Me");
- break;
- }
- break;
- case 5:
- switch(os.dwMinorVersion){ //再比較dwMinorVersion的值
- case 0:
- vname=_T("Microsoft Windows 2000"); //1999年12月發佈
- break;
- case 1:
- vname=_T("Microsoft Windows XP"); //2001年8月發佈
- break;
- case 2:
- if(os.wProductType==VER_NT_WORKSTATION &&
- info.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64)
- vname=_T("Microsoft Windows XP Professional x64 Edition");
- else if(GetSystemMetrics(SM_SERVERR2)==0)
- vname=_T("Microsoft Windows Server 2003"); //2003年3月發佈
- else if(GetSystemMetrics(SM_SERVERR2)!=0)
- vname=_T("Microsoft Windows Server 2003 R2");
- break;
- }
- break;
- case 6:
- switch(os.dwMinorVersion){
- case 0:
- if(os.wProductType==VER_NT_WORKSTATION)
- vname=_T("Microsoft Windows Vista");
- else
- vname=_T("Microsoft Windows Server 2008"); //服務器版本
- break;
- case 1:
- if(os.wProductType==VER_NT_WORKSTATION)
- vname=_T("Microsoft Windows 7");
- else
- vname=_T("Microsoft Windows Server 2008 R2");
- break;
- case 2:
- vname=_T("Microsoft Windows 7");
- break;
- }
- break;
- default:
- vname=_T("未知操作系統");
- }
- return vname;
- }
- else
- return _T("");
- }
以上只能判斷操作系統的名稱,那如何判斷它是什麼版本的呢(如Home版或Professional版)。
下面這個函數就返回具體的版本名稱:
- CString getVersionMark()
- {
- OSVERSIONINFOEX os;
- os.dwOSVersionInfoSize=sizeof(OSVERSIONINFOEX);
- if(GetVersionEx((OSVERSIONINFO *)&os)){
- CString vmark;
- switch(os.dwMajorVersion){ //先判斷操作系統版本
- case 5:
- switch(os.dwMinorVersion){
- case 0: //Windows 2000
- if(os.wSuiteMask==VER_SUITE_ENTERPRISE)
- vmark=_T("Advanced Server");
- break;
- case 1: //Windows XP
- if(os.wSuiteMask==VER_SUITE_EMBEDDEDNT)
- vmark=_T("Embedded");
- else if(os.wSuiteMask==VER_SUITE_PERSONAL)
- vmark=_T("Home Edition");
- else
- vmark=_T("Professional");
- break;
- case 2:
- if(GetSystemMetrics(SM_SERVERR2)==0 && /
- os.wSuiteMask==VER_SUITE_BLADE) //Windows Server 2003
- vmark=_T("Web Edition");
- else if(GetSystemMetrics(SM_SERVERR2)==0 &&
- os.wSuiteMask==VER_SUITE_COMPUTE_SERVER)
- vmark=_T("Compute Cluster Edition");
- else if(GetSystemMetrics(SM_SERVERR2)==0 &&
- os.wSuiteMask==VER_SUITE_STORAGE_SERVER)
- vmark=_T("Storage Server");
- else if(GetSystemMetrics(SM_SERVERR2)==0 &&
- os.wSuiteMask==VER_SUITE_DATACENTER)
- vmark=_T("Datacenter Edition");
- else if(GetSystemMetrics(SM_SERVERR2)==0 &&
- os.wSuiteMask==VER_SUITE_ENTERPRISE)
- vmark=_T("Enterprise Edition");
- else if(GetSystemMetrics(SM_SERVERR2)!=0 &&
- os.wSuiteMask==VER_SUITE_STORAGE_SERVER)
- vmark=_T("Storage Server");
- break;
- }
- break;
- case 6:
- switch(os.dwMinorVersion){
- case 0:
- if(os.wProductType!=VER_NT_WORKSTATION &&
- os.wSuiteMask==VER_SUITE_DATACENTER)
- vmark=_T("Datacenter Server");
- else if(os.wProductType!=VER_NT_WORKSTATION &&
- os.wSuiteMask==VER_SUITE_ENTERPRISE)
- vmark=_T("Enterprise");
- else if(os.wProductType==VER_NT_WORKSTATION &&
- os.wSuiteMask==VER_SUITE_PERSONAL) //Windows Vista
- vmark=_T("Home");
- break;
- }
- break;
- default:
- vmark=_T("");
- }
- return vmark;
- }
- else
- return _T("");
- }
另外,操作系統的補丁包名稱也可以從szCSDVersion直接獲取。