Hello WiX community,
After the advice given to me yesterday, I've been focusing on the
subject I've had least replies on. Basically, I am trying to only
write a registry entry if it does not exist and create some keys to go
with it, or if it does exist, I want to modify things, and at
uninstall time, restore things to how they were. Since my attempts so
far combined with examples will probably be more informative, here
they come:
<Property Id="PROGID_XYZ" Value="Test.ProgID">
<RegistrySearch Id='ExtXyzRegistry' Type='raw'
Root='HKLM' Key='Software\CLASSES\.xyz' />
</Property>
That ought to fill PROGID_XYZ with an already existing ProgID, or if
the filetype is unknown, substitute my own default handler.
<Component Id="ComponentXYZ" Guid="<snip>">
<snip>
<RegistryKey Root="HKLM" Key="Software\Classes\[PROGID_XYZ]"
Action="createAndRemoveOnUninstall">
<RegistryValue Type="string" Name="SomeWeirdValue" Value="Stuff" />
</RegistryKey>
</Component>
This created the value in the proper place, but upon uninstallation,
it removed the entire key, which makes sense since I asked it to. But
in this case, the RegistrySearch was successful, and thus the
appropriate ProgID already existed, and I essentially wiped out the
file associations. Oops. How can I avoid this? If I were to make it
action="create", I would never remove the handler afterwards if I
understand correctly.
To have it all in a little neat list, these are the requirements I am
trying to achieve:
* .XYZ exists - make changes in existing ProgID.
* .XYZ does not exist - make the .XYZ key, and make my default ProgID.
* Uninstallation: .XYZ already existed at installation - place back
any settings I overwrote in the 'foreign' ProgID, and remove any new
entries I made.
* Uninstallation: .XYZ never existed at installation - remove .XYZ and
my default ProgID.
I have studied conditions, features, components and the various
options available to me with a RegistrySearch, but I am pretty much
lost. As such I appreciate any advice or examples you folks can give
me to work off. :)
Regards,
Jan Wester
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