Cant print if the loadedSwf isn't added it to displaylist

programming flash
1

I’m having a problem- not being able to get the loaded_swf that is not added to display list to get printed . The printer prints a blank page instead.

I use Loader to load the external swf . If I add the loader to display list, the loaded_swf gets printed with no problem. However, I do not want to display the loaded_swf on screen .

Is this as3 limitation or did I do anything wrong? I attach the code below. ( the problem is at loadAsset function)

I also tried using addChild(loader) and then make the loader invisible (loaded.visible = false) . It also prints the blank page. I know I can move the loaded swf off stage, but hm…m that doesn’t seem like it fixes the problem at the root cause.

/*
This is a class document.
it loads assets/a.swf and the loaded file will get printed when you click print button.

*/

package{

import flash.display.*;
import flash.events.*;
import flash.printing.*;
import flash.geom.*;
import flash.text.*;      
import flash.net.URLRequest ;



public class PrintTest extends Sprite{

   private var _assetList              :Array=["assets/a1.swf"];
   private var _myContainer        :Sprite;
   private var _myContainer2      :Sprite; 
   private var _loadCounter        :Number=0;
   private var _myLoader             :Loader;
   
    
   public function PrintTest(){
               loadAsset(0);
   }
    
   private function loadAsset(assetIndex:Number){

            var assetSrc:String=_assetList[assetIndex];
            _myLoader= new Loader();
            _myLoader.contentLoaderInfo.addEventListener( Event.INIT,handleInit);
            _myLoader.load(new URLRequest(assetSrc));
               
              /*
                // problem here :  When i comment out  the following line and click print, It prints a blank page. 
             */
            //addChild(_myLoader);
            _myLoader.visible=false;
            displayPrintBtn();
   }
   
   private function displayPrintBtn():void{ 
               //create print button
            var myPrintBtn:Sprite=createPrintBtn(300,5,70,30,0xFFCC33,"click to print");
            addChild(myPrintBtn);
   }
   
   private function handleInit(event:Event):void{ 
               trace("handleInit"+_loadCounter);
   }

   private function createPrintBtn(x:Number,y:Number,w:Number,h:Number,c:Number,t:String):Sprite{
             var myPrintBtn:Sprite=createRec(x,y,w,h,c); 
            var myText:TextField=new TextField();
            myText.text=t;
            myText.x=x;
            myText.y=y;
            myPrintBtn.addChild(myText);
             myPrintBtn.addEventListener(MouseEvent.MOUSE_DOWN,printPages);
            return(myPrintBtn);
         }

    private function createRec(x:Number,y:Number,w:Number,h:Number,c:Number):Sprite{
            var myRec:Sprite=new Sprite(); 
            myRec.graphics.lineStyle();
            myRec.graphics.beginFill(c);
            myRec.graphics.drawRect(x,y,w,h);
            myRec.graphics.endFill();
            return(myRec); 
    }
    
     private function printPages(evt:Event):void{
            trace("printBtn clicked");
             var myPrintJob:PrintJob = new PrintJob();    
             myPrintJob.start();
            var printingSprite:Sprite=_myLoader.content as Sprite;
            myPrintJob.addPage(printingSprite);
            myPrintJob.send();
     }
}

}

Many thanks!!