Maybe because GetVersionEx lies for a certain class of programs (installers). And for all programs on Win8.1 unless you specifically manifest that you support 8.1.
http://msdn.microsoft.com/en-us/library/windows/desktop/ms724451%28v=vs.85%29.aspx provides some details in the user comments... Dave <rant version="nice">Sometimes backwards compatibility sucks</rant> ________________________________ From: Astro Flea <astrof...@gmail.com> To: wix-users@lists.sourceforge.net; astrof...@gmail.com Sent: Thursday, July 25, 2013 1:41 PM Subject: [WiX-users] Problem using type 1 custom action Hello, I'm creating my first installation package with WiX, and there seems to be a problem. My MSI package tries to check for and facilitate the installation of DirectX 11 with the helper DLL and EXE files available here: http://msdn.microsoft.com/en-us/library/windows/desktop/ee416644%28v=vs.85%29.aspx I'm implementing the 3rd method indicated at the linked site, because the example is the most thorough in that case. I've got this working, but when I run this package on my Windows 7 development machine, a DLL function (in D3D11InstallHelper.dll) identifies my OS as Windows Vista (The exported function CheckDirect3D11Status uses GetVersionEx to identify the OS). I know this because I've added debugging code to the DLL that writes to a log file. But when I use the DLL outside of the WiX installer, it correctly identifies my OS as Windows 7 with SP1. Ultimately, it appears as though the consequences of this discrepancy aren't serious, because when D3D11Install.exe is later called in a different custom action, it does detect that DirectX 11 is already installed and that the system is up-to-date. But clearly (I think), something isn't working right. I've looked at all the relevant files, and they don't seem to be set to run in any kind of Windows Vista "compatibility mode", so why would the DLL not recognize my OS? Thanks, Brad P.S. I'm using WiX Toolset 3.7 ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
