gtk_combo_box_get_has_entry
gtk_combo_box_get_model
gtk_combo_box_get_popup_accessible
+gtk_combo_box_get_popup_fixed_width
gtk_combo_box_get_row_separator_func
gtk_combo_box_get_row_span_column
gtk_combo_box_get_button_sensitivity
gtk_combo_box_set_entry_text_column
gtk_combo_box_set_focus_on_click
gtk_combo_box_set_model
+gtk_combo_box_set_popup_fixed_width
gtk_combo_box_set_row_separator_func
gtk_combo_box_set_row_span_column
gtk_combo_box_set_button_sensitivity