Re: treeview and scrolling

[danny van elsen <danny van elsen skynet be>]

hello Murray,

thanks for the answer!

I have had a look at the gtkmm example, but it seems to me that it will 
still call "get_data_row_iter_from_tree_row_iter" for every row in the 
data model, when initializing the model?

I put a "cout" statement in this method, and the more rows (rows_count) 
there are in the model, the more output there is...

Is there a way to avoid this?

greetings, Danny.

*********************************************************************

Murray Cumming wrote:

> On Fri, 2005-03-25 at 23:42 +0100, danny van elsen wrote:
>  
>
> > hello all,
> >
> > I would like to modify the scrolling behaviour of a treeview: I have 
> > hundreds of thousands of rows to show, and the treeview is taking far 
> > too long to fill up all of the data.
> >
> > So what I want to do is: instead of loading all data into the treeview, 
> > and then use the built in scrolling behavior, I would like to add my own 
> > scrolling, and to only add the data to the treeview that is currently 
> > visible.
> >    
>
> I think that you need a derived treemodel that only gets the data when
> the data is really needed. There is a custom tree model example in the
> gtkmm tarball. It's not very easy.
>
>