I have a vertical scroll bar, however it's inactive.

Clarify. A vertical (or horizontal) scrollbar attached to the main window or ...?

And; do you want to remove it? Or activate it?

Any ideas?

Um. I warned you I probably can't help much further.

But, You can control the addition of scrollbars to windows by specifying -hscroll => 0|1 and -vscroll => 0|1 when creating the control.

If a scrollbar is being added without your requesting it and without you being able to turn it off using the above, then you're going to have to seek better guidance than I can give.

Ditto, for how to control the scrollbar to do something useful.

The inactive scrollbar is for the internal Window. I have added "-vscroll => 1" to it, still it's inactive. thanks

The inactive scrollbar is for the internal Window. I have added "-vscroll => 1" to it, still it's inactive.

I suspect that you would need two things for it to become active (but I'm half-remembering/guessing here!):

1. The content of that inner window would need to be bigger than the client area.
2. You might well have to added a scroll handler.

   Something like:

   sub Inner_Scroll { ## assumes you've named your inner window 'Inner'.
       ## do stuff. You'll need to look up the details.
   }
   [download]

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