DataGrid中每个cell点击的位置判断

<?xml version="1.0"?>
<!-- dpcontrols/DataGridEvents.mxml -->
<mx:Application xmlns:mx="" layout="absolute" width="500" height="400">
   <mx:Script>
   <![CDATA[
      import mx.events.ListEvent;
      private function itemClickEvent(event:ListEvent):void {
         clickColumn.text=String(event.columnIndex);
         clickRow.text=String(event.rowIndex);
         eventType.text=event.type;
      }
   ]]>
   </mx:Script>
   <mx:DataGrid id="myGrid" width="350" height="150"
         itemClick="itemClickEvent(event);" x="0" y="0">
        
      <mx:ArrayCollection>
         <mx:Object Artist="Pavement" Price="11.99"
            Album="Slanted and Enchanted" />
         <mx:Object Artist="Pavement" Album="Brighten the Corners"
            Price="11.99" />
      </mx:ArrayCollection>
   </mx:DataGrid>
   <mx:Label text="ColumnIndex:" x="0" y="158"/>
   <mx:TextInput id="clickColumn" x="94" y="156" width="84"/>
   <mx:Label text="RowIndex:" x="0" y="184"/>
   <mx:TextInput id="clickRow" x="94" y="182" width="84"/>
   <mx:Label text="EventType::" x="0" y="210"/>
   <mx:TextInput id="eventType" x="94" y="208" width="84"/>
</mx:Application>