ToolTips for ComboBox Items or List Items

"... I initially thought this should be possible by setting the showDatatips and the dataTipField on the List, but it didn’t work as expected for me."

private var myDropdownFactory:ClassFactory;

private function initApp():void
{
    myDropdownFactory = new ClassFactory( List );
    myDropdownFactory.properties = { showDataTips:true, dataTipFunction:myDataTipFunction }
}

private function myDataTipFunction( value:Object ):String
{
    return ( value.name + "’s blog is " + value.blog );
}

<mx:ComboBox id="myCB" dataProvider="{ myDP }" labelField= name" dropdownFactory="{ myDropdownFactory }" />

http://raghuonflex.wordpress.com/