    <interface>
      <object class="GtkDialog" id="dialog1">
        <child internal-child="vbox">
          <object class="GtkVBox" id="vbox1">
            <property name="border-width">10</property>
            <child internal-child="action_area">
              <object class="GtkHButtonBox" id="hbuttonbox1">
                <property name="border-width">20</property>
                <child>
                  <object class="GtkButton" id="ok_button">
                    <property name="label">gtk-ok</property>
                    <property name="use-stock">TRUE</property>
                    <signal name="clicked" handler="ok_button_clicked"/>
                  </object>
                </child>
              </object>
            </child>
          </object>
        </child>
      </object>
    </interface>