package {
    import flash.display.MovieClip;
    import starling.core.Starling;
    
    public class Sample extends MovieClip {
        public function StarlingParticles() {
            new Starling(MainView, stage).start();
        }
    }
}
import starling.display.Sprite;
import starling.events.Event;
internal class MainView extends Sprite {
    public function MainView() {
        addEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
    }
    
    private function addedToStageHandler(event:Event):void {
		// ここに記述
    }
}