Add tooltip to a VBox
<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:VBox toolTip="This is the VBox tool tip."> <mx:Button id="button" label="Button" toolTip="This is the button tool tip." /> <mx:TextInput id="textInput" /> </mx:VBox> </mx:Application>