Tooltip Fade effect
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" width="600" height="600" initialize="app_init();"> <mx:Script> import mx.managers.ToolTipManager; public function app_init():void { ToolTipManager.showEffect = fadeIn; } </mx:Script> <mx:Fade id="fadeIn" alphaFrom="0" alphaTo="1" duration="1000"/> <mx:Button id="b1" label="Click me" toolTip="This is a ToolTip."/> </mx:Application>