[FLEX] toolTip 사용법

<?xml version="1.0" encoding="utf-8"?>  

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="doInit();">  

<mx:Script>  

<!![CDATA[import mx.collections.ArrayCollection; // this holds the grid data  

[Bindable]  

private var myData:ArrayCollection = new ArrayCollection();private function doInit():void{  

myData.addItem({fname:"Joe",lname:"Bloggs"});  

myData.addItem({fname:"Joe1",lname:"Bloggs"});  

}  

  

private function buildToolTip(item:Object):String{  

var myString:String = "";  

if(item != null)  

{  

myStringmyString = myString + "Firstname : " + item.fname + "\n";  

myStringmyString = myString + "Lastname : " + item.lname + "\n"  

}  

return myString;  

}  

]]>  

</mx:Script>  

<mx:DataGrid id="dGrid"  dataProvider="{myData}"  visible="true" dataTipFunction="buildToolTip">  

<mx:columns>  

<mx:DataGridColumn dataField="fname" headerText="FirstName" showDataTips="true" />  

<mx:DataGridColumn dataField="lname" headerText="LastName" showDataTips="true" />  

</mx:columns>  

</mx:DataGrid>  

</mx:Application>