package com.jebysun.test.globalhotkey;  import java.awt.Color; import java.awt.Cursor; import java.awt.Point; import java.awt.event.MouseEvent;  import javax.swing.JLabel; import javax.swing.JWindow; import javax.swing.event.MouseInputListener;  /** * 自定義程序窗口，鼠標可拖拽移動其位置。 * @author Jeby Sun * */ public class MyFrame extends JWindow {    private static final long serialVersionUID = 1L;      JLabel titleLbl;      public MyFrame() {     //設置背景顏色不能直接調用其setBackground方法，而要設置其ContentPane的背景顏色。     this.getContentPane().setBackground(new Color(0x99FF66));     this.setBounds(100,100,600,400);     this.setLayout(null);          titleLbl = new JLabel(" 自定義窗口標題欄");     titleLbl.setOpaque(true);     titleLbl.setBackground(new Color(0x66CC00));     titleLbl.setBounds(0, 0, 600, 30);     this.add(titleLbl);     //鼠標事件處理類     MouseEventListener mouseListener = new MouseEventListener(this);     titleLbl.addMouseListener(mouseListener);     titleLbl.addMouseMotionListener(mouseListener);          this.setVisible(true);   }    /**   * 鼠標事件處理   * @author Jeby Sun   *   */   class MouseEventListener implements MouseInputListener {          Point origin;     //鼠標拖拽想要移動的目標組件     MyFrame frame;          public MouseEventListener(MyFrame frame) {       this.frame = frame;       origin = new Point();     }          @Override     public void mouseClicked(MouseEvent e) {}      /**     * 記錄鼠標按下時的點     */     @Override     public void mousePressed(MouseEvent e) {       origin.x = e.getX();        origin.y = e.getY();     }      @Override     public void mouseReleased(MouseEvent e) {}      /**     * 鼠標移進標題欄時，設置鼠標圖標為移動圖標     */     @Override     public void mouseEntered(MouseEvent e) {       this.frame.setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));     }          /**     * 鼠標移出標題欄時，設置鼠標圖標為默認指針     */     @Override     public void mouseExited(MouseEvent e) {       this.frame.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));     }      /**     * 鼠標在標題欄拖拽時，設置窗口的坐標位置     * 窗口新的坐標位置 = 移動前坐標位置+（鼠標指針當前坐標-鼠標按下時指針的位置）     */     @Override     public void mouseDragged(MouseEvent e) {       Point p = this.frame.getLocation();       this.frame.setLocation(         p.x + (e.getX() - origin.x),          p.y + (e.getY() - origin.y));      }      @Override     public void mouseMoved(MouseEvent e) {}        }      public static void main(String[] args) {     new MyFrame();   }  }