4 replies to this topic

[andyguest13]

Hello;

I would like to perform a test to see if the folder the user has chosen already exists (and even better, to see if it is empty or not) when they press 'Next' on the DestinationDialog.

What i do now is a DoAction that calls a CA .exe which i have written that just throws a messagebox up if the folder does exist. This messagebox tells the user that if they want to change their mind, they must press 'Back' on the dialog that will popup once the messagebox is dismissed (SetupType)

This doesn't flow well in practice; is there a cleaner method please? Such that i can maybe stop installer even moving on to that next dialog if the target folder exists. And can i do it all without a CA? I don;t see any Condition or ControlEvent that i can use to see if a folder exists.

thanks
andy

[KathyMorey]

I haven't done this, but have you looked at System Search to see if you can search for a folder (as opposed to a file)?

[VBScab]

[Stefan Krueger]

Just to clarify: AppSearch also runs in the UI sequence - before the UI dialogs are displayed. And that's the problem, because andy needs to test a user selected folder (and probably re-check if the user goes back and selects a different folder). think you need a custom action for the checking in htis case. You can have your CA set a property and based on that decide whether to proceed to the next dialog or not.

[VBScab]

Andy, your problem is that the dialog controls only have a sub-set of events available to them and some controls don't have the same events available as others, which is bizarre.

For example, you're probably well used to seeing 'Next' being made clickable (as opposed to greyed-out) when you click a radio button - the "I accept the license agreement" option group is a common example. Well, you can't do anything similar with, say, a check-box, where you might want some extra text or a button (or whatever) to appear if it's selected.