Gtk2_IndexedComboBox
Gtk2_IndexedComboBox automatically
creates the model and sets up the cell renderer when instantiating
the widget. You may pass an array of key/value pairs to the
constructor if you like to, but also can set them later.
The currently selected (active) key can be retrieved via
get_active_key(), the selected (active)
value by using get_active_text().
You can preselect a certain key with
set_active_key().
If you don't like the renderer or want to change it or its
attributes, use get_cell_renderer() and
set_cell_renderer().
All other methods to retrieve/store data are convenience methods
that act as proxy to the model. For example,
Gtk2_IndexedComboBox' method
set_array() internally calls the same
method on the model, Gtk2_IndexedComboBox_Model.
This allows you to quickly add some data to the combo
without getting the model first and acting on it.
