包含事件数据的自定义事件

package
{
    import flash.events.Event;

    public class CustomEvent extends Event
    {
        public static const START:String = "START";
        public static const STOP:String  = "STOP";

        public var data:*;

        public function CustomEvent(type:String, data:*,
                                    bubbles:Boolean=false, cancelable:Boolean=false)
        {
            super(type, bubbles, cancelable);

            if (data)
                this.data = data;
        }
    }
}

要发送自定义事件：

var dataObject:Object = {name: "Example Data"};

dispatchEvent(new CustomEvent(CustomEvent.START, dataObject))

要收听自定义事件：

addEventListener(CustomEvent.STOP, stopHandler);

function stopHandler(event:CustomEvent):void
{
    var dataObject:* = event.data;
}