LFC-$9.lzx

<canvas height="140" debug="true">
   <simplelayout/>
   <button name="eventSender" onmouseover="this.customevent.sendEvent('over')" onmouseout="this.customevent.sendEvent('out')">
     <event name="customevent"/>
   </button>

   <view bgcolor="red" width="20" height="20">
     <handler name="customevent" reference="eventSender" args="event">
       Debug.debug("event: %s", event);
       this.setAttribute('x', this.x + 10);
     </handler>
   </view>
 </canvas>