CODEWITHSUNDEEP
c++windowswindows-xpdetection
Jon Cage
Jon Cage

Reputation: 37448

How do I detect whether my software is running on windows XP?

I have some code running to detect windows XP which I think should work but what should I replace the '??'s with to detect whether I'm running on Windows XP?

bool IsWindowsXP()
{
    bool isWindowsXp = false;

    OSVERSIONINFOEX osvi;
    ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
    osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
    if( GetVersionEx((OSVERSIONINFO*)&osvi) )
    {
        const DWORD MinXpVersion = ??;
        const DWORD MaxXpVersion = ??;
        if ((osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) && 
            (vi.dwMajorVersion >= MinXpVersion) &&
            (vi.dwMajorVersion <= MinXpVersion))
        {
            isWindowsXp = false;
        }
    }

    return isWindowsXp;
}

Upvotes: 5

Views: 2235

Answers (3)

user956584
user956584

Reputation: 5559

No need extra library, header, working also on VC++ Express :

BOOL chkxp(){
    DWORD version = GetVersion();
    DWORD major = (DWORD)(LOBYTE(LOWORD(version)));
    DWORD minor = (DWORD)(HIBYTE(LOWORD(version)));
    return ((major == 5) && (minor == 1)); // 5.1 is WIN Xp  5.2 is XP x64
}

Upvotes: 2

Adrian McCarthy
Adrian McCarthy

Reputation: 47954

The SDK has <VersionHelpers.h>, which provides inline functions for checking for Windows versions. Historically, many developers have gotten these checks wrong, so theses functions were added to make the checks more foolproof.

In particular, IsWindowsXPOrGreater() && !IsWindowsVistaOrGreater() seems to address your need.

Note that, with the Windows 10 SDK, using GetVersionEx generates deprecation warnings at compile time.

Upvotes: 0

Qaz
Qaz

Reputation: 61900

On the documentation page for the OSVERSIONINFOEX structure, the two relevant fields say this:

For more information, see Remarks.

Down in the remarks section is a handy table:

Operating system    Version number dwMajorVersion dwMinorVersion Other
Windows 8                 6.2            6              2        OSVERSIONINFOEX.wProductType == VER_NT_WORKSTATION
Windows Server 2012       6.2            6              2        OSVERSIONINFOEX.wProductType != VER_NT_WORKSTATION
Windows 7                 6.1            6              1        OSVERSIONINFOEX.wProductType == VER_NT_WORKSTATION
Windows Server 2008 R2    6.1            6              1        OSVERSIONINFOEX.wProductType != VER_NT_WORKSTATION
Windows Server 2008       6              6              0        OSVERSIONINFOEX.wProductType != VER_NT_WORKSTATION
Windows Vista             6              6              0        OSVERSIONINFOEX.wProductType == VER_NT_WORKSTATION
Windows Server 2003 R2    5.2            5              2        GetSystemMetrics(SM_SERVERR2) != 0
Windows Home Server       5.2            5              2        OSVERSIONINFOEX.wSuiteMask & VER_SUITE_WH_SERVER
Windows Server 2003       5.2            5              2        GetSystemMetrics(SM_SERVERR2) == 0
Windows XP Prof x64 Ed    5.2            5              2        (OSVERSIONINFOEX.wProductType == VER_NT_WORKSTATION) && (SYSTEM_INFO.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64)
Windows XP                5.1            5              1        Not applicable
Windows 2000              5              5              0        Not applicable

As seen in the table, XP is 5.1.

Upvotes: 5

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