Re: TreeView column widths

[Joaquim Schmidlap <schmidlap schmidlap org>]

On Apr 23, 2008, at 2:32 PM, Jonathon Jongsma wrote:

> On Wed, Apr 23, 2008 at 2:20 PM, Joaquim Schmidlap
> <schmidlap schmidlap org> wrote:
> > I have a TreeView that starts out displaying N columns. The TreeView
> >  is contained in a ScrolledWindow, which is on a page in a Notebook,
> >  which lives on the top level Window. The ScrolledWindow is set to
> >  POLICY_NEVER on the X axis, and POLICY_AUTOMATIC on the Y.
> >
> >  The user can elect to "hide" certain columns on the TreeView. After
> >  they are hidden, though, the rightmost column of the TreeView  
> > expands
> >  in width to fill whatever space the now-hidden columns used, with  
> > the
> >  net effect that the TreeView is always the same width.
> >
> >   What I'd like is for the containing widgets all the way up to just
> >  get smaller as the columns are hidden (and grow again when they
> >  resurface). What's the best approach for this?
>
> This probably can be accomplished by specifying a different packing
> option for the scrolled window, but I'm not sure of the exact solution
> from your description.

I have attached a small test program which exhibits the same  
behavior. I removed the Notebook for clarity, which made no  
difference. Perhaps this code makes my problem more clear?

Or, run it and see. Clicking the toggle button hides the first  
column, and the second column just sort of expands to fill the space  
that was there. The behavior is similar if there are many columns;  
it's always the rightmost one which grows.

Many thanks for any/all insight here.

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