Thanks, always good to get another view of the problem. Neil
>It's a matter of opinion. Some users like or even require a proper >clean-up, >although you can give them a separate clean up tool (reg file) for this if >necessary. Some like to be able to uninstall then reinstall and not lose >their settings. > >-----Original Message----- >From: Neil Sleightholm [mailto:n...@x2systems.com] >Sent: 29 October 2012 11:05 >To: General discussion for Windows Installer XML toolset. >Subject: Re: [WiX-users] Setting DWORD registry keys > >Correct, it is a configuration value that the application can change. >Putting a default in the application makes sense. Is it good practice to >remove values on uninstall? > >Neil > > >>You don't explicitly say but it sounds like a configuration value. The >>requirement that a value not be removed during upgrade suggests that it >>can be modified after installation. If that's true, it's not >>recommended to install such a value. Have the application assume or >>write the default value whenever it's missing. >> >>If you're using a later scheduling of RemoveExistingProducts, you might >>be able to add a component containing a RemoveRegistryKey to clean up >>when the user removes the application. This wouldn't be removed as long >>as you added the exact same component to all the later versions of the >>installer. >> >>-----Original Message----- >>From: Neil Sleightholm [mailto:n...@x2systems.com] >>Sent: 28 October 2012 08:39 >>To: General toolset. (wix-users@lists.sourceforge.net) >>Subject: [WiX-users] Setting DWORD registry keys >> >>In my installation I need to set a dword registry to a default value >>when the install is first run and remove the key on uninstall but not >>change it on an upgrade. I am struggling to find a way to do reliably >>and wondered if anyone had any suggestions. >> >>Here is what I have tried: >> >>1. Read the existing value with <RegistrySearch> and rewrite it on >>upgrade, this fails because DWORDs come back prefixed with a hash (#) >>and <RegistryValue> causes this to be written as a string. >> >>2. Read the existing value with <RegistrySearch> and Condition the >><RegistryValue> so it is only written when the value is not set. The >>problem with this is that on upgrade the key is removed. >> >>I can solve this by writing a CA to read the values but I am sure there >>must be a standard way of doing this that is eluding me. >> >>Neil >> >>Neil Sleightholm >>X2 Systems Limited >>n...@x2systems.com<mailto:n...@x2systems.com> >> >>----------------------------------------------------------------------- >>--- >>--- >>- >>WINDOWS 8 is here. >>Millions of people. 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