Re: [Glade-users] GtkListStore. (Multiple selection)

[Harring Figueiredo <harringf yahoo com>]

--- martine cs washington edu wrote:
> On Thu, Oct 17, 2002 at 04:17:44PM -0700, Harring Figueiredo wrote:
> > My problem is that, when using *foreach(); we cannot delete any rows
> > because the remove() messes up the iter on the store/model.  Thus
> > cuases some rows to not be deleted and sometimes gives some ugly
> > error messages.
>
> > I am trying to think of a way to mark the selectect rows -- and I
> > guess I found a obscure way that works: Add a non-visible flag on the
> > model, and on the foreach function, I set it to true (meaning it was
> > selected -- after the foreach call is done, I loop through the model
> > and remove the rows I had set.
>
> I ran into this, too.
>
> Another solution, that don't require modifying your model:
>
> Iterate through every row, calling gtk_tree_selection_iter_is_selected()
> on each.  Remember to start again from the beginning if you delete the
> row (because your iterator is invalidated).
>
> A coauthor suggested possibly building a GList of GtkTreePaths... 
> though I doubt they continue to refer to the same element if you 
> delete an element, so iterate through the GList backwards (or just
> build it list in reverse)...  but that's ugly and heavy.
>
>
> For my project, I tried a bunch of different options and then found the
> fastest one:  use foreach_selected to mark every selected row in the
> internal data structure that the treeview was showing, then clear the
> treeview and repopulate it from the data structure.  It's lame, but it
> works. :\
>
> -- 
>       Evan Martin
> martine cs washington edu
>   http://neugierig.org
> _______________________________________________
> gtk-app-devel-list mailing list
> gtk-app-devel-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list



 This is exactly what I am doing --- but it will not be very practical from a
long list. -- oh well..

 Thanks for the reply.
HArring


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