ConvertPoint Java不起作用

Question

我试着写一个gui，它会根据mouseClick改变标签。我实现了一个点击和拖动系统，但问题是它只在全屏时才有效？任何人都可以告诉我如何使我的点相对于框架？基本上，我的JLabels位置已关闭，我需要它来匹配面板而不是屏幕：

           int xbegin = 0, ybegin = 0, xend, yend= 0;
           Point px, p2x = null;
           for(int a = 0; a < states.size(); a++ ){
           if(states.get(a).getIcon() == yellowIcon){
            self = true;
            xbegin = states.get(a).getX();
            ybegin = states.get(a).getY();
            p2x  = (SwingUtilities.convertPoint(states.get(a), xbegin, ybegin, jPanel2));
            states.get(a).setIcon(rectangleIcon);
            yellow = false; 
        }
        else if(states.get(a).getIcon() == yellow2Icon){
                   System.out.println("this is zarir");
            xend = states.get(a).getX();
            yend = states.get(a).getY();
            px = (SwingUtilities.convertPoint(states.get(a), xend, yend,     jPanel2));
            Shape rect = new Rectangle2D.Double(p2x.x,60,px.x-p2x.x,2);
            ShapeIcon transit = new ShapeIcon(rect, Color.red);
            JLabel transitLabel = new JLabel(transit);
            transition.add(transitLabel);
            transitLabel.setText("Define Transition");
            transitLabel.setBounds(p2x.x,70,px.x-p2x.x, 200); 
            System.out.println(transitLabel.getBounds());
            states.get(a).setIcon(rectangleIcon);
            jPanel2.add(transitLabel);
            jPanel2.revalidate();
            jPanel2.repaint(); 
             }
           }
  }                                     

我每次点击我的面板时都会得到mouseCoordinates但是当我点击我的标签时我没有收到任何坐标？一般来说，GUI的任何提示都会非常有用