execute deferred and properties

[Glenn M]

MSI documentation says thay for every custom action you shoudl have a
rollback action . and you can only have a rollback action if you place
the custom action in execute defferred.

however if your custom action runs based on a condition (e.g
remove="all") that condition can only be evaluated during the execute
immediate stage.

how do you evaluate the condition at execute deferred time. do you
store it in a property at execute immediate time and they grab that
property during the execute deferred sequence?

thanks

glenn

 

[Stefan Krueger [MVP]]

That only applies to custom actions that modify the target machine. These
should be deferred, and accompanied by a rollback action.
You can use properties in the condition because the condition is evaluated
when the execute script is generated.
See the following article for additional explanation:

Installation Phases and In-Script Execution Options for Custom Actions in
Windows Installer
http://www.installsite.org/pages/en/isnews/200108/index.htm

--
Stefan Krueger
Microsoft Windows Installer MVP

Please post your questions in the newsgroup or vist one of these web sites:

Windows Installer FAQ
http://www.msifaq.com - http://www.msifaq.de

InstallSite - Resources for Setup Developers
http://www.installsite.org
http://www.installsite.de (GERMAN)