The solution in the tutorial is fine. It's the way that "everybody" detects versions based on UpgradeCode, old and new to prevent downgrades and perform upgrades.
You have a problem in that the 4th digit of the ProductVersion isn't used anyway in major upgrades, so your upgrades will require you to make an increment somewhere in the first three fields. Phil Wilson -----Original Message----- From: Ragnar Rova [mailto:r...@mima.x.se] Sent: Tuesday, March 02, 2010 7:56 AM To: wix-users@lists.sourceforge.net Subject: [WiX-users] Preventing downgrades as a launch condition 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 *** Confidentiality Notice: This e-mail, including any associated or attached files, is intended solely for the individual or entity to which it is addressed. This e-mail is confidential and may well also be legally privileged. If you have received it in error, you are on notice of its status. Please notify the sender immediately by reply e-mail and then delete this message from your system. Please do not copy it or use it for any purposes, or disclose its contents to any other person. This email comes from a division of the Invensys Group, owned by Invensys plc, which is a company registered in England and Wales with its registered office at Portland House, Bressenden Place, London, SW1E 5BF (Registered number 166023). For a list of European legal entities within the Invensys Group, please go to http://www.invensys.com/legal/default.asp?top_nav_id=77&nav_id=80&prev_id=77. You may contact Invensys plc on +44 (0)20 7821 3848 or e-mail inet.hqhelpd...@invensys.com. This e-mail and any attachments thereto may be subject to the terms of any agreements between Invensys (and/or its subsidiaries and affiliates) and the recipient (and/or its subsidiaries and affiliates). ------------------------------------------------------------------------------ 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
