获取操作系统OS等相关信息

问题一：Windows SDK 8.1版本中的VersionHelper.h文件当中没有IsWindows10ORGreater,所以当你用IsWindows8Point1ORGreater判断出版本信息是Windows8.1以上的版本后，你就无法区分它到底是Win8.1还是Win10.

问题二：使用GetVersionEx这个API配合结构体OSVERSIONINFOEX这个方法获取版本信息，那么Win8以上的系统不论是Win8.1还是Win10都会被判定为主版本号为6，次版本号为2（即Win8的版本号）。

那么如何区分Win8.1和Win10？

使用如下未文档化API：

RtlGetNtVersionNumbers。

string GetNtVersionNumbers()
{
    HMODULE hModNtdll = NULL;
    DWORD dwMajorVer, dwMinorVer, dwBuildNumber;
    OSVERSIONINFOEX lpVersionInformation;

    BOOL set = GetVersionExW((OSVERSIONINFO *)&lpVersionInformation);

    if ((lpVersionInformation.dwMajorVersion >= 6) && (lpVersionInformation.dwMinorVersion >= 2))
    {
        if (hModNtdll = ::LoadLibraryW(L"ntdll.dll"))
        {
            typedef void (WINAPI *pfRTLGETNTVERSIONNUMBERS)(DWORD*, DWORD*, DWORD*);
            pfRTLGETNTVERSIONNUMBERS pfRtlGetNtVersionNumbers;
            pfRtlGetNtVersionNumbers = (pfRTLGETNTVERSIONNUMBERS)::GetProcAddress(hModNtdll, "RtlGetNtVersionNumbers");
            if (pfRtlGetNtVersionNumbers)
            {
                pfRtlGetNtVersionNumbers(&dwMajorVer, &dwMinorVer, &dwBuildNumber);
                dwBuildNumber &= 0x0ffff;
            }
            ::FreeLibrary(hModNtdll);
            hModNtdll = NULL;
        }
    }
    string version = to_string(dwMajorVer) + "." + to_string(dwMinorVer) + "." + to_string(dwBuildNumber);
    return version;
}

 获取计算机操作系统信息基本可以依靠一下几个函数来完成

CString strOperatingSystem(OSVERSIONINFOEX str,BOOL tes)
{
    // 系统信息
    CString pszOS,gszOS;
    if(tes)
        pszOS = _T("Windows");
    else
        pszOS = _T("Win");
    
    switch (str.dwPlatformId)
    {
    case VER_PLATFORM_WIN32_NT:
        if ( str.dwMajorVersion <= 4 )
            pszOS += _T("NT");
        else if ( str.dwMajorVersion == 5 )
        {
            if( str.dwMinorVersion == 0 )
                pszOS += _T("2000");
            else if( str.dwMinorVersion == 1 )
                pszOS += _T("XP");
            else if( str.dwMinorVersion == 2 )
            {
                if(str.wProductType==VER_NT_WORKSTATION )
                    pszOS += _T("XP_x64"); 
                else
                    pszOS += _T("2003");
            }
        }
        else if ( str.dwMajorVersion == 6 )
        {
            if( str.dwMinorVersion == 0 )
            {
                if(str.wProductType == VER_NT_WORKSTATION)
                    pszOS += _T("Vista");
                else
                    pszOS += _T("2008");
            }
            else if( str.dwMinorVersion == 1 )
            {
                if(str.wProductType == VER_NT_WORKSTATION)
                    pszOS += _T("7");
                else
                    pszOS += _T("2008R2");
            }
            else if( str.dwMinorVersion == 2 )
            {
                if(str.wProductType == VER_NT_WORKSTATION)
                    pszOS += _T("8");
                else
                    pszOS += _T("2012");
            }
            else if( str.dwMinorVersion == 3 )
            {
                if(str.wProductType == VER_NT_WORKSTATION)
                    pszOS += _T("8.1");
                else
                    pszOS += _T("2012R2");
            }
            else
                pszOS += _T("Null");
        }
        else if ( str.dwMajorVersion == 10 )
        {
            if( str.dwMinorVersion == 0 )
            {
                if(str.wProductType == VER_NT_WORKSTATION)
                    pszOS += _T("10");
                else
                    pszOS += _T("2016");
            }
        }
    }
    if(lstrlen(pszOS))
        gszOS.Format("%s SP%d",pszOS,str.wServicePackMajor);
    else
        gszOS = _T("未知操作系统");
    
    return gszOS;
}

// 读取系统位数
DWORD IsWow64()
{
    DWORD bIsWow = 32;
    BOOL bIsWow64 = FALSE;
    FARPROC fnIsWow64Process = GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "IsWow64Process");

    if(fnIsWow64Process)
        ((BOOL (WINAPI *)(HANDLE, PBOOL))fnIsWow64Process)(GetCurrentProcess(), &bIsWow64);

    if(bIsWow64)
        bIsWow = 64;
    else
        bIsWow = 32;
    
    return bIsWow;
}

BOOL GetNtVersionNumbers(DWORD&dwMajorVer, DWORD& dwMinorVer,DWORD& dwBuildNumber)
{
    BOOL bRet= FALSE;
    HMODULE hModNtdll= NULL;
    if (hModNtdll= ::LoadLibraryW(L"ntdll.dll"))
    {
        typedef void (WINAPI *pfRTLGETNTVERSIONNUMBERS)(DWORD*,DWORD*, DWORD*);
        pfRTLGETNTVERSIONNUMBERS pfRtlGetNtVersionNumbers;
        pfRtlGetNtVersionNumbers = (pfRTLGETNTVERSIONNUMBERS)::GetProcAddress(hModNtdll, "RtlGetNtVersionNumbers");
        if (pfRtlGetNtVersionNumbers)
        {
            pfRtlGetNtVersionNumbers(&dwMajorVer, &dwMinorVer,&dwBuildNumber);
            dwBuildNumber&= 0x0ffff;
            bRet = TRUE;
        }
        ::FreeLibrary(hModNtdll);
        hModNtdll = NULL;
    }

    return bRet;
}

// 获取系统版本号
BOOL g_GetVersionEx(OSVERSIONINFOEX &lpVersionInformation)
{
    ZeroMemory(&lpVersionInformation, sizeof(OSVERSIONINFOEX));
    lpVersionInformation.dwOSVersionInfoSize=sizeof(OSVERSIONINFOEX);
    BOOL set = GetVersionExA((OSVERSIONINFO *)&lpVersionInformation);

    if((lpVersionInformation.dwMajorVersion >= 6)&&(lpVersionInformation.dwMinorVersion >= 2))
    {
        DWORD dwMajorVer,dwMinorVer,dwBuildNumber;
        GetNtVersionNumbers(dwMajorVer,dwMinorVer,dwBuildNumber);
        lpVersionInformation.dwMajorVersion = dwMajorVer;
        lpVersionInformation.dwMinorVersion = dwMinorVer;
    }

    return set;
}

　　void main()
　　{
　　// TODO: Add your control notification handler code here

　　OSVERSIONINFOEX Log_OsVerInfoEx; // 系统版本信息

　　g_GetVersionEx(Log_OsVerInfoEx);

　　CString VerInfo;
　　VerInfo.Format("%d.%d %s[%d位]",Log_OsVerInfoEx.dwMajorVersion,Log_OsVerInfoEx.dwMinorVersion,strOperatingSystem(Log_OsVerInfoEx,TRUE),IsWow64());

　　SetDlgItemText(IDC_VERLNFOEX,VerInfo);

　　}