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It appears to be some kind of Windows family ID. The actual value appears to be meaningless, since WinCE definitely isn't of a higher level than Windows XP, for example.

I interpret it as follows:
0Windows 3.1, 3.11, WFWThe 16 bit Windows generation
1Win95/98/MEWin95 and descendants
2WinNT3.x, WinNT4.x, Win2k, WinXPthe NT family
3WinCEWindows Control Edition, for handheld devices.

I can't say I can even find a trace of it in, nor in the \%Config hash it creates. I wouldn't trust those values anyway, as they are likely the values at the time perl was compiled. For example, on my system, $Config{osversion} is '4.0', even though I'm on Win98. As you can see, I should have gotten '4.1' or '4.10'.

I think using an API call, through Win32::API, would be the safest way. As for which API call... there is GetVersion(). You'll get the value of the last column, live this time, and at least one bit saying whether this is NT or not. But still, GetVersionEx() looks like the better choice.

use Win32::API; my $tpl = 'V5Z128'; my $struc = pack $tpl, 5*4+128, (0) x 4, ''; my $GetVersionEx = new Win32::API('kernel32', 'GetVersionExA', ['P'], +'N'); $GetVersionEx->Call($struc); my($OSVersionInfoSize, $MajorVersion, $MinorVersion, $BuildNumber, $Pl +atformId, $CSDVersion) = unpack $tpl, $struc; print << "END"; major: $MajorVersion minor: $MinorVersion build: $BuildNumber platform: $PlatformId "$CSDVersion" END

In reply to Re: perlport, MSWin32 and ID column by bart
in thread perlport, MSWin32 and ID column by giulienk

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