Hi. I need a simple way to prevent downgrades a product in a wix based msi installer.
The old defective way which I found was something along: <Property Id="CUR_VER"> <RegistrySearch Id='CurrentVersion' Root='HKLM' Key='Software\Foo\Client' Name='CurrentVersion' Type='raw'/> </Property> <Condition Message="Cannot install this version [ProductVersion] over an existing installation [CUR_VER] that has a higher version number. You may need to uninstall it first."> NOT CUR_VER or ProductVersion>=CUR_VER</Condition> I want something which allows 1.2.3.10 to upgrade from 1.2.3.9. The version above just does a string compare which fails. Don't know if the solution at http://www.tramontana.co.hu/wix/lesson4.php works. I would prefer something which uses my registry key from the example above. According to http://msdn.microsoft.com/en-us/library/aa368012%28VS.85%29.aspx you cannot compare versions at all in conditions but they suggest searching for versions of installed files using Appsearch. I'm fine with calling some external vbscript code or something which does the registry searching and comparison I don't understand how the answer at: http://stackoverflow.com/questions/2109408/sequencing-custom-action-in-wix-before-launchconditions relates to my question but they mention preventing downgrades in wix. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
