Hi All,
I've just rewritten my installer using WiX 3.5. However, before I
distribute the new MSI I'm dotting all the i and crossing the t's this
time! The problem is that I need to make sure the previous .exe setup
is removed before installing the new msi version.
So, i've been looking at various ways to locate the unins000.exe file
(UninstallString) and execute it. If possible I'd like to search the
registry and use the info in there but I can't think of a way to use the
<RegistrySearch> element and be sure it's found, if there.
When I look at my dev machine registry the key would look like this:
"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{413B7644-1F93-4890-BD40-AC540C29935B}_is1"
How would this work on a 32bit XP machine for instance? What key value
can I possibly use to catch all flavours of OS? I've seen the Win64
property but I can only find my keys in one place on my dev machine so
if I said no to this it wouldn't find it on my dev box ... confused!
All the script I have for this at the moment is:
<Property Id='UNINSTALL_EXE'>
<RegistrySearch Id='LocateUninstallExe' Type='file' Root='HKLM'
Key='SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\{413B7644-1F93-4890-BD40-AC540C29935B}_is1'
Name='UninstallString' Win64='??' />
</Property>
<Property Id='UNINSTALL_CMD' Value='/SILENT'/>
<InstallExecuteSequence>
<Custom Action="ca.RemovePreviousVersion" Before="InstallInitialize" />
</InstallExecuteSequence>
<CustomAction Id="ca.RemovePreviousVersion" Property="UNINSTALL_EXE"
ExeCommand="UNINSTALL_CMD" />
Any pointers on this would be much appreciated.
Thanks,
Jammer
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