Gtk2::ComboBoxEntry: changing the model ... what happens to the selection?

[Daniel Kasak <dkasak nusconsulting com au>]

Hi all.

I have some code which updates a Gtk2::ComboBoxEntry's model depending 
on what is happening elsewhere on the form.
I've noticed that if you have an item selected already, if you change 
the model and *then* get the ID that was selected, you will still get 
the previously selected item.

eg:

# Combo gets a model
$widget->set_model($model);

---

User selects an item

---

# Combo gets *another* model
$widget->set_model($model);

---

# Get the ID of the currently selected item in Combo
my $iter = $widget->get_active_iter;
  
if (! $iter) {
   return 0;
}

my $selected_accountno = $widget->get_model->get($iter, 0);


In the above example, I will get the ID that corresponds to the item the 
user selected. However if the model has changed, the item they selected 
is not valid any more ( which is why I changed the model ).

Am I supposed to explicitly clear out the selection when I change the model?
If I do, that's fine. I just would have thought it would make more sense 
for this to happen automatically when the model changes ( and perhaps 
also clearing out the Combo's child entry text as well ).

Dan

--
Daniel Kasak
IT Developer
NUS Consulting Group
Level 5, 77 Pacific Highway
North Sydney, NSW, Australia 2060
T: (+61) 2 9922-7676 / F: (+61) 2 9922 7989
email: dkasak nusconsulting com au
website: http://www.nusconsulting.com.au

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