doubleclick studio. access parent stage. AS3 - actionscript-3

Question

Im working on a banner for google double-click studio. My parent swf loads a child swf and adds it to the stage. I need to get access to the parent swf stage from my child. How would i do that?
This is my parent code
import com.google.ads.studio.HtmlEnabler;
import com.google.ads.studio.events.StudioEvent;
import com.google.ads.studio.display.StudioLoader;
import flash.events.Event;
import flash.net.URLRequest;
import flash.display.MovieClip;
var enabler:HtmlEnabler = HtmlEnabler.getInstance();
enabler.init(this);
var loadedHandler:Function = function(event:StudioEvent):void {
var myLoader:StudioLoader = new StudioLoader();
var req:URLRequest = new URLRequest("child.swf");
myLoader.load(req);
holder.addChild(myLoader);
}
My child swf has a document class where i want do access the stage.
the problem is:
_enabler = new ProxyEnabler();
stage.align = StageAlign.TOP_LEFT;
On stage i get: #1009: Cannot access a property or method of a null object reference.
Anyone know how to solve this?

Answer 1

this.parent.stage should do the trick. Make sure you use it after the child has been added to the parent/stage. Note: You could just move the stage.align = StageAlign.TOP_LEFT; to the parent if you don't need a different setting.

Answer 2

Wanted to give my own two cents on this piece. I tried the other answer but it didnt work. I got in touch with Doubleclick Support and they gave me an answer that worked out perfectly. In this example i am creating a stage mouseover and mouseout event handler.
In your example you would change
stage.align = StageAlign.TOP_LEFT;
to be
this.addEventListener(Event.ADDED_TO_STAGE, isAddedToStage);
function isAddedToStage(e){
stage.align = StageAlign.TOP_LEFT;
}
And here is my example with a stage mouseover and mouseout event handler.
this.addEventListener(Event.ADDED_TO_STAGE, isAddedToStage);
function isAddedToStage(e){
stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMoved);
}
function mouseMoved(evt:Event):void
{
//custom script here
mouseIsOver = true;
stage.removeEventListener(MouseEvent.MOUSE_MOVE, mouseMoved);
stage.addEventListener(Event.MOUSE_LEAVE, mouseLeft);
}
function mouseLeft(evt:Event):void
{
//custom script here
mouseIsOver = false;
stage.removeEventListener(Event.MOUSE_LEAVE, mouseLeft);
stage.addEventListener(MouseEvent.MOUSE_MOVE, mouseMoved);
}