package {
	import flash.display.Sprite;
	import flash.net.*;
	import flash.events.*;
	import flash.errors.*;
	import flash.text.TextField;

	public class DispatchEventTest extends Sprite
	{
		private const MY_ERROR:String = "my_error";
		private var _rss:String = "hoge.txt";
		
		public function DispatchEventTest()
		{
			addEventListener(this.MY_ERROR, myErrorHandler);
			loadRss();
		}
		
		private function loadRss():void
		{
			var request:URLRequest = new URLRequest(this._rss);
			var loader:URLLoader = new URLLoader();
			loader.load(request);
			
			loader.addEventListener(IOErrorEvent.IO_ERROR, loadIoErrorHandler);
			//... ...

			try
			{
				loader.load(request);
			}
			catch (error:Error)
			{
				//......
			}
		}
		
		private function loadIoErrorHandler(event:IOErrorEvent):void
		{
			// ■loadRss()を呼び出している側でMY_ERRORを監視したいので、独自のMY_ERRORをイベントフローに送出する
			dispatchEvent(new Event(this.MY_ERROR));
		}
		
		private function myErrorHandler(event:Event):void
		{
			var tf:TextField = new TextField();
			tf.text = "myError!!";
			addChild(tf);
		}
	}
}