This kind of thing is usually done at a higher level than this. For example people don't check for VC 9.0 Dlls or individual .NET assemblies they look for a product code or a registry key that tells them that the containing package has been installed (such as the VC Redist, Office PIAs. .NET Frameworks etc). Is there no containing package for these Dlls that has a ProductCode, or installs a registry key or something?
Phil Wilson -----Original Message----- From: Jono Juggler [mailto:[email protected]] Sent: Wednesday, May 20, 2009 1:37 PM To: [email protected] Subject: Re: [WiX-users] Checking registered dlls Thanks for your reply. I have no intent of replacing anything. The dlls I am checking for are not ones I made. These are third party libraries the user needs to install outside of my program. And I am not facilitating their install. All I want to do is check the version numbers of the libraries that are already installed. The problem is I dont know where the libraries are installed to in the filesystem. <-----Original Message-----> >From: Wilson, Phil [[email protected]] >Sent: 5/18/2009 4:40:55 PM >To: [email protected] >Subject: Re: [WiX-users] Checking registered dlls > >This isn't a common problem because everyone just lets the file versioning rules >take care of everything. If you have version 1.45 then you won't replace 1.49, >and if you have 1.55 you will replace it - that's the built-in versioning rule >of Windows. Do you have other versions of these files that you're installing? >What's the problem you're trying to solve that leads to you this solution? > >Phil Wilson > >-----Original Message----- >From: Jono Juggler [mailto:[email protected]] >Sent: Friday, May 15, 2009 10:12 AM >To: [email protected] >Subject: [WiX-users] Checking registered dlls > >Hello All, > >I am looking for a way to test if certain libraries with certain >versions have been installed. I want to check against registered dlls, >and not do this through the file system. But this is the only way I have >found to get this to work. In this example I am making sure they have >Prior version 1.50 installed: > ><Property Id="PRIORGUID"> ><RegistrySearch Id="priorguid" Root="HKCR" Key="Prior.Encoders\CLSID" >Type="raw"/> ></Property> > ><Property Id="PRIORLOCATION"> ><RegistrySearch Id="priorlocation" Root="HKCR" >Key="CLSID\[PRIORGUID]\InprocServer32" Type="file"/> ></Property> > ><Property Id="PRIORVERCHECK"> ><DirectorySearch Id="priorversion" Path="[PRIORLOCATION]"> ><FileSearch Name="Prior.dll" MinVersion="1.49"/> ></DirectorySearch> ></Property> > ><Condition Message="This application requires Prior."> ><![CDATA[Installed OR PRIORVERCHECK]]> ></Condition> > > >I basically find the library in the registry which points me to the file >and then I look up the version in the file system. I am uneasy with this >method. When I use Type="file", it seems to return a directory where the >file is instead of returning the full path to the file itself. Does it >always work this way? Also this means I have to know the base file name. >If there was a way to split the full path into a name and directory then >I could do the FileSearch without knowing the basename? > >Is my method reliable? Is there a better way to do this? It seems like >this would be a common problem. 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