Re: TreeView - First element

[Mark Roberts <gtkmm manumark de>]

Dear Adam,

> > If there is indeed an error in gtkmm itself, it would help if you could
> > provide a small self-contained test case for us to try.

> http://chyla.tk/gtk_foobar-0.1.tar.gz

> void MainClass::MoveDownFun()
> {
>     Glib::RefPtr<Gtk::TreeSelection> selection =
>         TreeViewExample.get_selection();
>     Gtk::TreeModel::iterator iter = selection->get_selected();
>
>     if (iter) // it must not be selected
>         if (ListStore->children().end() != iter)
>             ListStore->iter_swap(iter, iter++);
> }

The error Juan pointed out is still there:

In last line but one you should be checking that iter is not the last 
element in the list. That is not what you are checking, because end() is 
_not_ the last element. It follows that when iter is the last element in 
the list, you execute iter_swap with iter++ anyway, which is invalid.

All the best and a happy new year,
Mark