anchor.diff:      _context.game.stage.addChild(buttonText);
   
     }
  -
  +  /**
  +   * Sets the coordinates of the button object.
  +   * 
  +   * **important:** Please use this for setting the coordinates.
  +   */
     void setCoordinates(int x, int y) {
       this.x = x;
       this.y = y;
  
positive.code:     buttonText.y = y;
    }
  
    StageXL.EventStream<StageXL.MouseEvent> get onMouseOver =>
        StageXL.InteractiveObject.mouseOverEvent.forTarget(buttonText);
    StageXL.EventStream<StageXL.MouseEvent> get onMouseDown =>
  
negative.code: part of dartrocket;
  
  /**
   * Represents a simple Button.
   * 
   * Example:
   *      Button button = new Button(this, "resourceName", "buttonText")
   *        ..setCoordinates(300, 400)
   *        ..onMouseClick() //mouse click eventlistener
   *        ..onTouchEnd(); //touch eventlistener
   */
  class Button extends InteractiveBitmap {
  
    State _context;
    /**
     * Text on the button.
     */
    Text buttonText;
  
    /**
     * Makes a Button object.
     */
    Button(State context, String resourceName, String text, {bool addToStage:
        true}) : super(context.game.resourceManager.getBitmapData(resourceName)) {
      _context = context;
  