From: Matt Gushee <mgushee@...>
Date: 2002-10-31T11:10:18+09:00
Subject: Re: working with super?

On Thu, Oct 31, 2002 at 09:58:56AM +0900, Alan (Ursus Major) wrote:

> The following doesn't produce a visible scroll bar, but if I rewrite it
> slighlty so that it calls TkListbox directly, it shows it.  What am I doing
> wrong here?

That's peculiar, and I don't have an answer for you, just a couple of
tangential observations:

  I notice that although the listbox is getting packed, the pack options
  ('expand' and 'fill') are ignored in both versions of the code. I
  can't see why that would be. Maybe it's got something to do with
  what's in and out of scope in nested blocks ... that's just a guess,
  though--I still don't understand blocks very well.

  Also, did you know you can do this?

   @lb = TkListbox.new(@ff, keys) {
       yscrollbar(TkScrollbar.new(@ff) {
           pack('side'=>'right', 'fill'=>'y')
       })
       pack('side'=>'right', 'fill'=>'both', 'expand'=>'yes')
   }

Making this change doesn't seem to affect whether the scroll bar gets
packed or not; the simplification might make it a little easier to
isolate the problem. That yscrollbar method comes from the Scrollable
module.

-- 
Matt Gushee                 When a nation follows the Way,
Englewood, Colorado, USA    Horses bear manure through
mgushee@havenrock.com           its fields;
http://www.havenrock.com/   When a nation ignores the Way,
                            Horses bear soldiers through
                                its streets.
                                
                            --Lao Tzu (Peter Merel, trans.)