Glade コンボボックスの攻略法

<?xml version="1.0" standalone="no"?> <!--*- mode: xml -*-->
<!DOCTYPE glade-interface SYSTEM "http://glade.gnome.org/glade-2.0.dtd">

<glade-interface>

<widget class="GtkWindow" id="wndTest">
  <property name="visible">True</property>
  <property name="title" translatable="yes">Gtk2_IndexedComboBox_Model test</property>
  <property name="type">GTK_WINDOW_TOPLEVEL</property>
  <property name="window_position">GTK_WIN_POS_NONE</property>
  <property name="modal">False</property>
  <property name="resizable">True</property>
  <property name="destroy_with_parent">False</property>
  <property name="decorated">True</property>
  <property name="skip_taskbar_hint">False</property>
  <property name="skip_pager_hint">False</property>
  <property name="type_hint">GDK_WINDOW_TYPE_HINT_NORMAL</property>
  <property name="gravity">GDK_GRAVITY_NORTH_WEST</property>
  <signal name="destroy" handler="Gtk::main_quit"/>

  <child>
    <widget class="GtkComboBox" id="cmbNormal">
      <property name="visible">True</property>
    </widget>
  </child>
</widget>

</glade-interface>

<?php
require_once 'Gtk2/IndexedComboBox/Model.php';

$glade = new GladeXML(dirname(__FILE__) . '/glade.glade');
$glade->signal_autoconnect();

$combo = $glade->get_widget('cmbNormal');
$combo->connect('changed', 'comboChanged');
//show the second column only
$renderer = new GtkCellRendererText();
$combo->pack_start($renderer);
$combo->set_attributes($renderer, 'text', 1);

$mod = new Gtk2_IndexedComboBox_Model();
$combo->set_model($mod);

$mod->append(1, 'One');
$mod->append_array(array(2 => 'Two', 3 => 'Three'));
$mod->prepend(4, 'Four');

function comboChanged($combo)
{
    $nActive = $combo->get_active();
    $iter    = $combo->get_model()->get_iter($nActive);

    $key     = $combo->get_model()->get_key($iter);
    $text    = $combo->get_model()->get_text($iter);

    echo 'Selected: ' . $key . ' => ' . $text . "\r\n";
}

Gtk::main();
?>