我实现了 MouseMotionListener,也实现了 MouseListener。我在构造函数中添加newContentPane.addMouseListener(this)
了
newContentPane.addMouseMotionListener(this);
那还不够?类似mouseDragged(MouseEvent e),
mouseMoved(MouseEvent e)
的方法不会被调用。
import java.awt.BorderLayout;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
public class BorderFrame extends JFrame implements MouseListener,MouseMotionListener{
private static final long serialVersionUID = 1L;
private JButton northButton;
private JButton southButton;
private JButton westButton;
private JButton eastButton;
private JButton centerButton1;
private JButton centerButton2;
private JPanel newContentPane;
private JSplitPane splitPane1;
private JSplitPane splitPane2;
public BorderFrame(String title) {
super(title);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
newContentPane = new JPanel(new BorderLayout());
northButton = new JButton("North");
southButton = new JButton("South");
westButton = new JButton("West");
eastButton = new JButton("East");
centerButton1 = new JButton("Center1");
centerButton2 = new JButton("Center2");
newContentPane.add(northButton, "North");
newContentPane.add(southButton, BorderLayout.SOUTH);
newContentPane.add(westButton, BorderLayout.WEST);
newContentPane.add(eastButton, BorderLayout.EAST);
// newContentPane.add(centerButton, BorderLayout.CENTER);
splitPane1 = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, centerButton1,
centerButton2);
splitPane1.setResizeWeight(0.5);
splitPane1.setOneTouchExpandable(true);
splitPane1.setContinuousLayout(true);
newContentPane.add(splitPane1, BorderLayout.CENTER);
add(newContentPane);
newContentPane.addMouseListener(this);
newContentPane.addMouseMotionListener(this);
}
protected static void createAndShowGUI() {
final BorderFrame borderFrame = new BorderFrame("Test BorderLayout");
borderFrame.pack();
borderFrame.setLocationRelativeTo(null);
borderFrame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
createAndShowGUI();
}
});
}
//AUTOGENERATED methods
....
}