1 reply to this topic

[jmbutler]

I'm still amazed that such a robust installer IDE doesn't have a good way to add things to the system path, but here goes ... the Environment table in the Power Editor makes it easy to just append a new path, but it will continue to do it over and over if the package is reinstalled.  I need to have some logic involved.  Someone tell me if the following custom action steps might work:

1.  Set the Environment table in Power Editor to use a property to set the value of *PATH
2.  Use GetEnvVar() to get the current PATH value
3.  Use the StrFind() to see if what I need to add is already there
4.  Append the path to the string if necessary
5.  Set the property in step 1 to the new string value using MsiSetProperty().

Since the property's value is what the path variable should be, it should use that value in the Environment table, right?

[Stefan Krueger]

I would expect that Windows Installer runtime will not add multiple instances of the same entry to the PATH.
BTW in Installshield Developer 7 there's an Environment Variables view so you don't have to use the environment table