public static function createRendererWithProperties(renderer:Class,
properties:Object ):IFactory {
  var factory:ClassFactory = new ClassFactory(renderer);
  factory.properties = properties;
  return factory;
}

<mx:List dataProvider="{['Foo', 'Bar']}" itemRenderer="{createRendererWithProperties(Label, {toolTip: 'Hello'})}"/>

Posted by 미랭군