Basic menubar
i quite new flex , have been unable wrap myself around menubars. looking @ basic design in developer's guide , structure seems straight forward. question how state change when 1 of menuitems clicked? <mx:menubar id="mymenubar" labelfield="@label"> <mx:xmllist> <menuitem label="menuitem a" > <menuitem label="submenuitem a-1" enabled="false"/> <menuitem label="submenuitem a-2"/> </menuitem> <menuitem label="menuitem b" type="check" selected="true"/> <menuitem label="menuitem c" type="check" selected="false"/> <menuitem label="menuitem d" > <menuitem label="submenuitem d-1" type="radio" groupname="one"/> <menuitem label="submenuitem d-2" type="radio" groupname="one" selected="true"/> <menuitem label="su...