Validate Folder path?

[9eller]

I need my installer to specify a folder path and validate that not root drive is specifyed..
e.g.
C:\Folder\ - Allowed
C:\Folder\Subfolder\ - Allowed
C:\ - Not Allowed

I have made a custom action with the following VB script and attached it to dialog next button:

Path=Session.Property("REPOSITORY_FOLDER") : If Len(Path)<4 Then MsgBox("Please specify folder")

But how do I prevent that the wizard continues if Path not longer than 4 chars.?

[Daniel]

Hello and welcome to Advanced Installer forums,

Thank you for your interest in Advanced Installer.

In order to achieve what you want you can set an installer property (i.e. MY_PROP), inside your custom action, with "true" if the related path contains more than four characters and with "false" otherwise. Then you can add a "Display a child dialog while a condition is true" published event which will notify the users with a message, on [Next>] button, like this:

• Name: Display a specific child dialog
  Argument: <NewDialog>
  Condition: MY_PROP = "false"

Please keep in mind that "Display a specific child dialog" control event must be scheduled as latest control event in the "Published Events" tab.

Let us know if this helped.

All the best,
Daniel