Hi,
I have a wix-based installer in which I want to do a major upgrade.
I have an old version of the product that has a custom action that
fires during uninstall, unless a property is specified. i.e. If I just
uninstall my application, the action fires, but if I 'msiexec
/X'{MYGUID-...} DONTDOACTION=1' then it doesn't.
I'd like it to *not* fire the action, if I'm uninstalling it as part
of the major upgrade.
I guess I could make a custom action that called msiexec with the
relevant parameter, but I would prefer to have this taken care of by
the normal upgrade mechanism if at all possible, for obvious reasons.
Is there a way I can get the uninstaller to know about a property?
I've tried setting DONTDOACTION=1 in my installer, but it doesn't
propagate as far as the uninstall script. I've noticed in the
install.log there's a "Command Line" listed when it boots the
uninstall script, but I can't figure out how to get the property in
there.
Is there a way to do what I want to do?
Thanks,
Simon
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