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From:	"Gerrit van Niekerk" <gerritvn AT gpvno DOT co DOT za>
Organization:	GPvNO
To:	djgpp AT delorie DOT com
Date:	Tue, 13 Mar 2007 21:04:43 +0200
MIME-Version:	1.0
Subject:	Re: How to detect WindowsNT/2k/XP from my DJGPP program?
Message-ID:	<45F711EB.19437.BC6CC64@gerritvn.gpvno.co.za>
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> > On 12 Mar 2007 at 8:04, Glaux wrote:
> > > could you tell me how simply and reliable runtime check if my DJGPP
> > > prog is running under WinNT-XP dos box? I need to exclude some code
> > > from execution under NT.
> >
> Gerrit van Niekerk napsal:
> >       if (_os_trueversion == 0x532) {	/* Windows NT, 2000, XP */
> >
> >       }
On 13 Mar 2007 at 4:00, Glaux wrote:
> Thanks, it's really simple.
> But I cannot find any reference in my DJGPP docs to "_os_trueversion"
> only in dos.h and libc.
> I'd like see some description which shows what value this variable can
> get for various OS.
> If I understand well It was added in DJDEV  2.04 beta, is it oficial
> or some kind of hack? Can I rely it will be included in (maybe some)
> future versions of DJGPP?

I found it in the code for a high resolution clock (uclock.c).
Perhaps DJD can comment on how official it is.

Gerrit

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