如何通过程序而不是鼠标自动模拟（定义）鼠标拖动的事件

Question

我可以模拟鼠标拖动的事件吗？我有一个扩展自JPanel的自定义视图，并且我添加了一个mouseMotionListener，它为它实现了mouseDragged方法。现在，我想为此组件定义（新）一个鼠标拖动事件，以便它可以像被拖动一样，而不是真的使用鼠标。 我在Oracle.com中搜索MouseEvent类，但是我无法自己定义鼠标拖动的事件，您能否给我一些想法？ 我实现一个例子程序，这里是我的代码， 这是它实现了鼠标拖动的方法我的自定义视图：

public class Rect extends JLabel { 
private int width, height; 
private String title; 
public int interWidth = 1500; 
public int interHeight = 1000; 
private JFrame frame; 
private MouseMotionAdapter myAdapter; 
private MouseListener myListener; 

public Rect(int width, int height, String title, JFrame frame) { 
    this.width = width; 
    this.height = height; 
    this.title = title; 
    setText(this.title); 
    this.frame = frame; 
    this.myAdapter = new MouseMotionAdapter(){ 
     @Override 
     public void mouseDragged(MouseEvent me) { 
      System.out.println("dragged"); 
      me.translatePoint(me.getComponent().getLocation().x, me.getComponent().getLocation().y); 
      setLocation(me.getX(), me.getY()); 
      frame.repaint(); 
     } 
    }; 
    this.myListener = new MouseListener(){ 

     @Override 
     public void mouseClicked(MouseEvent e) { 
      // TODO Auto-generated method stub 
      System.out.println("click"); 
     } 

     @Override 
     public void mouseEntered(MouseEvent e) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void mouseExited(MouseEvent e) { 
      // TODO Auto-generated method stub 

     } 

     @Override 
     public void mousePressed(MouseEvent e) { 
      // TODO Auto-generated method stub 
      System.out.println("press"); 
     } 

     @Override 
     public void mouseReleased(MouseEvent e) { 
      // TODO Auto-generated method stub 
      System.out.println("release"); 

     } 

    }; 
    addMouseMotionListener(this.myAdapter); 
    addMouseListener(this.myListener); 
} 

public void paintComponent(Graphics g) { 
    super.paintComponent(g); 

    g.setColor(Color.black); 
    g.drawRoundRect(0, 0, this.width - 1, this.height - 1, 20, 20); 
} 

public void setWidth(int width) { 
    this.width = width; 
} 

public void setHeight(int height) { 
    this.height = height; 
} 

public int getWidth() { 
    return width; 
} 

public int getHeight() { 
    return height; 
} 

public MouseMotionAdapter getMyAdapter() { 
    return myAdapter; 
} 

public MouseListener getMyListener() { 
    return myListener; 
} 

}

这是主框架包含了矩形，可以拖动矩形通过鼠标，但我想通过模拟程序拖事件：

public class MainFrame extends JFrame { 

private JPanel contentPane; 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 
    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       MainFrame frame = new MainFrame(); 
       frame.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
} 

/** 
* Create the frame. 
*/ 
public MainFrame() { 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    setBounds(100, 100, 648, 518); 
    contentPane = new JPanel(); 
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 
    contentPane.setLayout(new BorderLayout(0, 0)); 
    setContentPane(contentPane); 

    Rect rect = new Rect(120,120,"example",this); 
    contentPane.add(rect); 

    Robot robot = new Robot(); 
    Point point = new Point(200,200); 
    robot.mouseMove(point.x,point.y); 
    robot.mousePress(InputEvent.BUTTON1_MASK); 
    robot.mouseMove(300, 300); 
    robot.mouseRelease(InputEvent.BUTTON1_MASK); 
} 

}

Answer 1

Robot robot; 
try { 
    robot = new Robot(); 
    Point point = rect.getLocationOnScreen(); //rect is my custom view 
    robot.mouseMove(point.x,point.y); 
    robot.mousePress(InputEvent.BUTTON1_MASK); 
    robot.mouseMove(point.x + 1,point.y + 1); 
    robot.mouseRelease(InputEvent.BUTTON1_MASK);//press+move+release = drag 
} catch (AWTException e1) { 
    e1.printStackTrace(); 
}