Disable uninstall from Add/Remove Programs, enable maintenance mode,
which will show a GUI during uninstall. Then allow user to uninstall
from maintenance, typically through a radio button selection that sets
REMOVE=ALL. The you can prompt the user for what you need (e.g. a SQL
password to drop a
Use Orca from the Windows Installer 4.5 SDK and look for that custom
action in both of the InstallShield merge modules. I'll bet its in both
of those modules.
Check the resultant package build in Wix to make sure if you get one of
the copies of the functions.
Regards,
greenaj
On Fri, 2009-07-24
You might try either using the LaunchConditions table to block the
install, or use the Upgrage table and UpgradeCode to uninstall the
product at the beginning of the install.
These are MSI table, but have corresponding Wix elements. As always,
the Wix Reference and the downloaded Windows Installe
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