BOOL GetOSDisplayString(LPTSTR pszOS)
{
    OSVERSIONINFOEX osvi;
    SYSTEM_INFO si;
    PGNSI pGNSI;
    PGPI pGPI;
    BOOL bOsVersionInfoEx;
    DWORD dwType;

    SecureZeroMemory(&si, sizeof(SYSTEM_INFO));
    SecureZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));

    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
    bOsVersionInfoEx = GetVersionEx((OSVERSIONINFO*)& osvi);

    if (!bOsVersionInfoEx) return 1;

    pGNSI = (PGNSI)GetProcAddress(GetModuleHandle(TEXT("kernel32.dll")), "GetNativeSystemInfo");
    if (NULL != pGNSI)
        pGNSI(&si);
    else GetSystemInfo(&si);



    if (VER_PLATFORM_WIN32_NT == osvi.dwPlatformId && osvi.dwMajorVersion > 4)
    {
        StringCchCopy(pszOS, BUFSIZE, TEXT("Microsoft "));

        if (IsWindows10OrGreater)
        {
            if (osvi.wProductType == VER_NT_WORKSTATION)
            StringCchCat(pszOS, BUFSIZE, TEXT("Windows 10 "));
        }

        else if(osvi.dwMajorVersion == 6)
        {

            if (osvi.dwMinorVersion == 0)
            {

                if (osvi.wProductType == VER_NT_WORKSTATION)
                    StringCchCat(pszOS, BUFSIZE, TEXT("Windows Vista "));
                else StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2008 "));
            }

            if (osvi.dwMinorVersion == 1 || osvi.dwMinorVersion == 2)
            {
                if (osvi.wProductType == VER_NT_WORKSTATION && osvi.dwMinorVersion == 1)
                    StringCchCat(pszOS, BUFSIZE, TEXT("Windows 7 "));
                else
                    if (osvi.wProductType == VER_NT_WORKSTATION && osvi.dwMinorVersion == 2)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Windows 8 "));
                    else
                        StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2008 R2 "));
            }

            pGPI = (PGPI)GetProcAddress(
                GetModuleHandle(TEXT("kernel32.dll")), "GetProductInfo");

            pGPI(osvi.dwMajorVersion, osvi.dwMinorVersion, 0, 0, &dwType);

            switch (dwType)
            {
            case PRODUCT_ULTIMATE:
                StringCchCat(pszOS, BUFSIZE, TEXT("Ultimate Edition"));
                break;
            case PRODUCT_PROFESSIONAL:
                StringCchCat(pszOS, BUFSIZE, TEXT("Professional"));
                break;
            case PRODUCT_HOME_PREMIUM:
                StringCchCat(pszOS, BUFSIZE, TEXT("Home Premium Edition"));
                break;
            case PRODUCT_HOME_BASIC:
                StringCchCat(pszOS, BUFSIZE, TEXT("Home Basic Edition"));
                break;
            case PRODUCT_ENTERPRISE:
                StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition"));
                break;
            case PRODUCT_BUSINESS:
                StringCchCat(pszOS, BUFSIZE, TEXT("Business Edition"));
                break;
            case PRODUCT_STARTER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Starter Edition"));
                break;
            case PRODUCT_CLUSTER_SERVER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Cluster Server Edition"));
                break;
            case PRODUCT_DATACENTER_SERVER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Edition"));
                break;
            case PRODUCT_DATACENTER_SERVER_CORE:
                StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Edition (core installation)"));
                break;
            case PRODUCT_ENTERPRISE_SERVER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition"));
                break;
            case PRODUCT_ENTERPRISE_SERVER_CORE:
                StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition (core installation)"));
                break;
            case PRODUCT_ENTERPRISE_SERVER_IA64:
                StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition for Itanium-based Systems"));
                break;
            case PRODUCT_SMALLBUSINESS_SERVER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Small Business Server"));
                break;
            case PRODUCT_SMALLBUSINESS_SERVER_PREMIUM:
                StringCchCat(pszOS, BUFSIZE, TEXT("Small Business Server Premium Edition"));
                break;
            case PRODUCT_STANDARD_SERVER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Standard Edition"));
                break;
            case PRODUCT_STANDARD_SERVER_CORE:
                StringCchCat(pszOS, BUFSIZE, TEXT("Standard Edition (core installation)"));
                break;
            case PRODUCT_WEB_SERVER:
                StringCchCat(pszOS, BUFSIZE, TEXT("Web Server Edition"));
                break;
            }
        }

        if (osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2)
        {
            if (GetSystemMetrics(SM_SERVERR2))
                StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2003 R2, "));
            else if (osvi.wSuiteMask & VER_SUITE_STORAGE_SERVER)
                StringCchCat(pszOS, BUFSIZE, TEXT("Windows Storage Server 2003"));
            else if (osvi.wSuiteMask & VER_SUITE_WH_SERVER)
                StringCchCat(pszOS, BUFSIZE, TEXT("Windows Home Server"));
            else if (osvi.wProductType == VER_NT_WORKSTATION &&
                si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
            {
                StringCchCat(pszOS, BUFSIZE, TEXT("Windows XP Professional x64 Edition"));
            }
            else StringCchCat(pszOS, BUFSIZE, TEXT("Windows Server 2003, "));

            if (osvi.wProductType != VER_NT_WORKSTATION)
            {
                if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_IA64)
                {
                    if (osvi.wSuiteMask & VER_SUITE_DATACENTER)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Edition for Itanium-based Systems"));
                    else if (osvi.wSuiteMask & VER_SUITE_ENTERPRISE)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition for Itanium-based Systems"));
                }

                else if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
                {
                    if (osvi.wSuiteMask & VER_SUITE_DATACENTER)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter x64 Edition"));
                    else if (osvi.wSuiteMask & VER_SUITE_ENTERPRISE)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise x64 Edition"));
                    else StringCchCat(pszOS, BUFSIZE, TEXT("Standard x64 Edition"));
                }

                else
                {
                    if (osvi.wSuiteMask & VER_SUITE_COMPUTE_SERVER)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Compute Cluster Edition"));
                    else if (osvi.wSuiteMask & VER_SUITE_DATACENTER)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Edition"));
                    else if (osvi.wSuiteMask & VER_SUITE_ENTERPRISE)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Enterprise Edition"));
                    else if (osvi.wSuiteMask & VER_SUITE_BLADE)
                        StringCchCat(pszOS, BUFSIZE, TEXT("Web Edition"));
                    else StringCchCat(pszOS, BUFSIZE, TEXT("Standard Edition"));
                }
            }
        }

        if (osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1)
        {
            StringCchCat(pszOS, BUFSIZE, TEXT("Windows XP "));
            if (osvi.wSuiteMask & VER_SUITE_PERSONAL)
                StringCchCat(pszOS, BUFSIZE, TEXT("Home Edition"));
            else StringCchCat(pszOS, BUFSIZE, TEXT("Professional"));
        }

        if (osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0)
        {
            StringCchCat(pszOS, BUFSIZE, TEXT("Windows 2000 "));

            if (osvi.wProductType == VER_NT_WORKSTATION)
            {
                StringCchCat(pszOS, BUFSIZE, TEXT("Professional"));
            }
            else
            {
                if (osvi.wSuiteMask & VER_SUITE_DATACENTER)
                    StringCchCat(pszOS, BUFSIZE, TEXT("Datacenter Server"));
                else if (osvi.wSuiteMask & VER_SUITE_ENTERPRISE)
                    StringCchCat(pszOS, BUFSIZE, TEXT("Advanced Server"));
                else StringCchCat(pszOS, BUFSIZE, TEXT("Server"));
            }
        }

        if (_tcslen(osvi.szCSDVersion) > 0)
        {
            StringCchCat(pszOS, BUFSIZE, TEXT(" "));
            StringCchCat(pszOS, BUFSIZE, osvi.szCSDVersion);
        }

        TCHAR buf[80];

        StringCchPrintf(buf, 80, TEXT(" (build %d)"), osvi.dwBuildNumber);
        StringCchCat(pszOS, BUFSIZE, buf);

        if (osvi.dwMajorVersion >= 6)
        {
            if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
                StringCchCat(pszOS, BUFSIZE, TEXT(", 64-bit"));
            else if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
                StringCchCat(pszOS, BUFSIZE, TEXT(", 32-bit"));
        }

        return TRUE;
    }

    else
    {
        return FALSE;
    }
}