import flash.display.Bitmap;
 function cropToBitmap ( displayObject:DisplayObject, x:Number = 0, y:Number = 0, width:Number = 0, height:Number = 0):Bitmap 
{
    width = (width == 0 ? displayObject.width : width);
    height = (height == 0 ? displayObject.height : height);
    var area:Rectangle = new Rectangle(0,0,width,height);
    var bm:Bitmap = new Bitmap(new BitmapData(width,height),'always',true);
    bm.bitmapData.draw ( displayObject , new Matrix(1, 0, 0, 1, x, y) , null, null, area, true );
    return bm;
 } 

<?xml version="1.0" encoding="utf-8"?>
<s:view xmlns:fx="<a href="/>http://ns.adobe.com/mxml/2009" </s:view>
xmlns:s="library://ns.adobe.com/flex/spark" title="Karta" creationComplete="view1_creationCompleteHandler(event)" viewActivate="view1_viewActivateHandler(event)">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.core.UIComponent;
import mx.events.FlexEvent;
 
import spark.events.ViewNavigatorEvent;
 
protected function view1_creationCompleteHandler(event:FlexEvent):void
{
var container:UIComponent = new UIComponent();
 
var sp:Sprite = new Sprite();
sp.graphics.beginFill(0);
sp.graphics.drawRect(0,0,100,100);
sp.graphics.endFill();
 
container.addChild(sp);
 
holder.addElement(container);
}
protected function view1_viewActivateHandler(event:ViewNavigatorEvent):void{}
 
]]>
</fx:Script>
<s:Group id="holder" left="0" right="0" top="0" bottom="0">
</s:Group>
</s:View>

m.target
m.currentTarget 

import flash.display.MovieClip;
import flash.events.MouseEvent;

var holder:MovieClip = new MovieClip();
holder.name = 'holder';
holder.graphics.beginFill(0xff00aa,.2);
holder.graphics.drawRect(0,0,400,300);
holder.graphics.endFill();
holder.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler);

var cube:MovieClip = new MovieClip();
cube.name = 'cube';
cube.graphics.beginFill(0x333333);
cube.graphics.drawRect(0,0,50,50);
cube.graphics.endFill();
cube.x = cube.y = 100;

var ring:MovieClip = new MovieClip();
ring.name = 'ring';
ring.graphics.beginFill(0x000000);
ring.graphics.drawCircle(0,0,30);
ring.graphics.endFill();
ring.x = 150;
cube.addChild(ring);
holder.addChild(cube);
addChild(holder);

function mouseUpHandler(m:MouseEvent):void{
    trace(m.currentTarget.name + ' - ' + m.target.name);
}