Re: [gtkmm] Addressing a TreeView cell without using TreeModel

[Murray Cumming <murrayc usa net>]

On Fri, 2003-07-04 at 09:32, Igor Gorbounov wrote:
> Murray Cumming wrote:
> 
> >On Fri, 2003-07-04 at 06:49, Igor Gorbounov wrote:
> >  
> >
> >>Hi, All!
> >>I need a sheet-like table with programmatically changeable number of 
> >>columns.
> >>    
> >>
> >
> >You need to create a new model for this, and use TreeView::set_model().
> >If you are changing the number of columns then you probably do want to
> >change all the data anyway, so this makes sense.
> >  
> >
> But can I change the model after its constructor has worked?

I think you mean "can't". No, you can't. You need to make a new model
and use that instead.

>  I've tried
> something like:
> Gtk::TreeModelColumn<Glib::ustring> param[20]; - in a model class 
> declaration,
> and:
> for (unsigned int i = 0; i < 20; i++)
>         add(param[i]);  in a model constructor,
> it works, but it looks somewhat ugly.
> I can set this "20" number to be reasonably high, so it would never be
> exceeded, but maybe there is a more beautiful way?
> [...]
> 
> >You mean you are adding TreeViewColumns that are not linked to any model
> >columns? I have never heard of that and I don't know if it should work.
> >You might ask on the GTK+ list about that kind of hackery. I'm not sure
> >what the point would be though.
> >  
> >
> Well, I do not stick to it, too, if there is a way to handle a treemodel 
> flexibly.
> 
> And then, can the first column be fixed on its place while scrolling
> horizontally?
>     Thanks in advance.
>        Igor Gorbounov
-- 
Murray Cumming
murray usa net
www.murrayc.com