Get OS in c++ win32 for all versions of win?

Question

How to get the OS version for all windows, at least the name for win95,98,me,xp,vista,7?

Im using visual c++ 2010 and I want to include this feature in a pure win32

Answer 1

How about something like this:

#include 
#include 
#include 
#pragma comment(lib, "netapi32.lib")

bool GetWinMajorMinorVersion(DWORD& major, DWORD& minor)
{
    bool bRetCode = false;
    LPBYTE pinfoRawData = 0;
    if (NERR_Success == NetWkstaGetInfo(NULL, 100, &pinfoRawData))
    {
        WKSTA_INFO_100* pworkstationInfo = (WKSTA_INFO_100*)pinfoRawData;
        major = pworkstationInfo->wki100_ver_major;
        minor = pworkstationInfo->wki100_ver_minor;
        ::NetApiBufferFree(pinfoRawData);
        bRetCode = true;
    }
    return bRetCode;
}


std::string GetWindowsVersionString()
{
    std::string     winver;
    OSVERSIONINFOEX osver;
    SYSTEM_INFO     sysInfo;
    typedef void(__stdcall *GETSYSTEMINFO) (LPSYSTEM_INFO);

    __pragma(warning(push))
    __pragma(warning(disable:4996))
    memset(&osver, 0, sizeof(osver));
    osver.dwOSVersionInfoSize = sizeof(osver);
    GetVersionEx((LPOSVERSIONINFO)&osver);
    __pragma(warning(pop))
    DWORD major = 0;
    DWORD minor = 0;
    if (GetWinMajorMinorVersion(major, minor))
    {
        osver.dwMajorVersion = major;
        osver.dwMinorVersion = minor;
    }
    else if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 2)
    {
        OSVERSIONINFOEXW osvi;
        ULONGLONG cm = 0;
        cm = VerSetConditionMask(cm, VER_MINORVERSION, VER_EQUAL);
        ZeroMemory(&osvi, sizeof(osvi));
        osvi.dwOSVersionInfoSize = sizeof(osvi);
        osvi.dwMinorVersion = 3;
        if (VerifyVersionInfoW(&osvi, VER_MINORVERSION, cm))
        {
            osver.dwMinorVersion = 3;
        }
    }

    GETSYSTEMINFO getSysInfo = (GETSYSTEMINFO)GetProcAddress(GetModuleHandle(L"kernel32.dll"), "GetNativeSystemInfo");
    if (getSysInfo == NULL)  getSysInfo = ::GetSystemInfo;
    getSysInfo(&sysInfo);

    if (osver.dwMajorVersion == 10 && osver.dwMinorVersion >= 0 && osver.wProductType != VER_NT_WORKSTATION)  winver = "Windows 10 Server";
    if (osver.dwMajorVersion == 10 && osver.dwMinorVersion >= 0 && osver.wProductType == VER_NT_WORKSTATION)  winver = "Windows 10";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 3 && osver.wProductType != VER_NT_WORKSTATION)  winver = "Windows Server 2012 R2";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 3 && osver.wProductType == VER_NT_WORKSTATION)  winver = "Windows 8.1";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 2 && osver.wProductType != VER_NT_WORKSTATION)  winver = "Windows Server 2012";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 2 && osver.wProductType == VER_NT_WORKSTATION)  winver = "Windows 8";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 1 && osver.wProductType != VER_NT_WORKSTATION)  winver = "Windows Server 2008 R2";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 1 && osver.wProductType == VER_NT_WORKSTATION)  winver = "Windows 7";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 0 && osver.wProductType != VER_NT_WORKSTATION)  winver = "Windows Server 2008";
    if (osver.dwMajorVersion == 6 && osver.dwMinorVersion == 0 && osver.wProductType == VER_NT_WORKSTATION)  winver = "Windows Vista";
    if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 2 && osver.wProductType == VER_NT_WORKSTATION
        &&  sysInfo.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)  winver = "Windows XP x64";
    if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 2)   winver = "Windows Server 2003";
    if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 1)   winver = "Windows XP";
    if (osver.dwMajorVersion == 5 && osver.dwMinorVersion == 0)   winver = "Windows 2000";
    if (osver.dwMajorVersion < 5)   winver = "unknown";

    if (osver.wServicePackMajor != 0)
    {
        std::string sp;
        char buf[128] = { 0 };
        sp = " Service Pack ";
        sprintf_s(buf, sizeof(buf), "%hd", osver.wServicePackMajor);
        sp.append(buf);
        winver += sp;
    }

    return winver;
}