[wix-users] Strange syntax in installer

Arnette, Bill bill.arnette at signalscape.com
Fri Jun 30 05:04:04 PDT 2017


Thank you!

So the installation is failing because the value (10) is lexicographically less than the checked for value (7).



-----Original Message-----
From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf Of Joseph L. Casale
Sent: Thursday, June 29, 2017 9:07 PM
To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Subject: Re: [wix-users] Strange syntax in installer

-----Original Message-----
From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf Of Arnette, Bill
Sent: Thursday, June 29, 2017 2:56 PM
To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
Subject: [wix-users] Strange syntax in installer

> The IIS Media Services 4.1 installer (which appears to be created with
> Wix) has the following launch condition which prevents it from
> installing on Windows 10 (IIS 10)
>
> (IISMAJORVERSION >= "#7") OR (Installed)
>
> What does the # in the above string literal mean?  I don't see any
> mention of it in Wix or Windows Installer documentation about LaunchCondition syntax.
>
> Note that IISMAJORVERSION is set from a registry search which, on
> Windows 10, is REG_DWORD 0xA

Have a read of http://wixtoolset.org/documentation/manual/v3/xsd/wix/registrysearch.html

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