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Date:	Wed, 20 Mar 2024 20:06:40 +0100
To:	cygwin AT cygwin DOT com
Subject:	Re: GetVersionEx() depreciated, what should be used instead for
	Windows 7/8/10?
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From:	Corinna Vinschen via Cygwin <cygwin AT cygwin DOT com>
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Cc:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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On Mar 20 12:39, Christian Franke via Cygwin wrote:
> Corinna Vinschen via Cygwin wrote:
> > You have to create an application with an application manifest not
> > supporting your OS.
> > 
> > For Cygwin apps, this occured when you built, say, an executable under
> > Windows 8.1 before Windows 10 support was added to the Cygwin toolchain:
> > the manifest linked to the Cygwin executable didn't yet contain a GUID
> > entry for Windows 10 support.
> > 
> > In this case, RtlGetVersion returns an OS version 6.3 even when running
> > under the 10.0 kernel.  This behaviour exists back 'til Windows Vista.
> 
> Could not reproduce the latter on Win10. I tested with recent Win10 and
> Win11 and also found a Win10 1511 (and Slackware 1.1.2, Win3.1, OS/2, ...)
> in my VM image museum.
> 
> Regardless of the exe manifest, RtlGetVersion and RtlGetNtVersionNumbers
> return the correct versions:
> 10.0.22621 (Win11 22H2)
> 10.0.19045 (Win10 22H2)
> 10.0.10586 (Win10 1511)
> 
> Without a manifest, GetVersionEx returns:
> 6.2.9200 (Win8)

Please check on commit 48511f3d3847c.  It was a real, existing problem
at the time.  I wouldn't have added the RtlGetNtVersionNumbers call
just for fun.


Corinna

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