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  Moving the Panel  (Read 1344 times)
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Offline ENC

Junior Member





« Posted 2006-07-19 12:39:07 »

Hi all...

Can someone tell me why how come when I move the panel it does not move with the cursor?
The sample code is below

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import javax.swing.*;

public class testDrag extends JFrame {

   private JPanel jContentPane = null;
   private JLayeredPane lp;

   private JPanel movePanel = null;
   public static void main(String []args){
       new testDrag();
   }


   public testDrag() {
      super();
      initialize();
   }

   private void initialize() {
      this.setDefaultCloseOperation(EXIT_ON_CLOSE);
      this.setSize(1000,1000);
      this.setContentPane(getJContentPane());
      this.setTitle("Test Drag");
      this.setVisible(true);
      lp = getLayeredPane();
      lp.add(getMovePanel(),JLayeredPane.MODAL_LAYER);
   }

   private javax.swing.JPanel getJContentPane() {
      if(jContentPane == null) {
         jContentPane = new javax.swing.JPanel();
         jContentPane.setLayout(new java.awt.BorderLayout());
      }
      return jContentPane;
   }
 
   private JPanel getMovePanel() {
      if (movePanel == null) {
         movePanel = new JPanel();
         movePanel.setBorder(javax.swing.BorderFactory.createLineBorder(java.awt.Color.red,5));
         movePanel.setSize(100, 100);
         movePanel.setLocation(10, 10);
         movePanel.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() {
            public void mouseDragged(java.awt.event.MouseEvent e) {   
                //int pX = getX();
               //int pY = getY();
               //int newX = e.getPoint().x;
               //int newY = e.getPoint().y;
               //int diffX = newX - pX;
               //int diffY = newY - pY;
               movePanel.setLocation(e.getPoint().x,e.getPoint().y);
                e.consume();
            }
         });
      }
      return movePanel;
   }
 }


The panel always moves around else where.. so I really dont understand why...

Can someone one explain why? Huh Huh
Offline oNyx

JGO Coder


Medals: 2


pixels! :x


« Reply #1 - Posted 2006-07-19 12:57:34 »

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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class MButton extends JFrame{
   JButton b=new JButton("bar");
   int x=20,y=20,xo=0,yo=0;
   public MButton(){
      JPanel p=new JPanel();
      p.setLayout(null);
      b.setBounds(x,y,60,20);
      p.add(b);
      getContentPane().add(p);
      setSize(500,500);
      setVisible(true);
      MBInputAdapter m=new MBInputAdapter();
      b.addMouseMotionListener(m);
      b.addMouseListener(m);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setVisible(true);
   }
   public static void main(String[]args){
      new MButton();
   }
   class MBInputAdapter extends MouseInputAdapter{
      public void mouseDragged(MouseEvent e){
         b.setLocation(x+=e.getX()-xo,y+=e.getY()-yo);
      }
      public void mousePressed(MouseEvent e){
         xo=e.getX();
         yo=e.getY();
      }
   }
}

弾幕 ☆ @mahonnaiseblog
Offline ENC

Junior Member





« Reply #2 - Posted 2006-07-20 03:06:01 »

Thanks!!  Grin

Needed sometime to understand the code
lolz

Cheers!
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