Flex PNGEncoder 與 BitmapData 配合將Stage畫面以.png檔存於本機端

//將stage上之顯示元件轉成.PNG檔案,並存於本機端,包含stage也可轉存
<?xml version="1.0" encoding="utf-8"?>
<mx:Application applicationComplete="init()" xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
     import mx.graphics.codec.PNGEncoder;
     private var enable:Boolean;
     private function init():void
    {
        enable = true;
    }

AS3開啟系統檔案處理

package
{
     //顯示相關
     import flash.display.Sprite;
     import flash.display.DisplayObject;
     import flash.display.Graphics;
     import flash.display.Loader;