接口MouseMotionListener用于在組件上,用于接收鼠標(biāo)移動事件。過程鼠標(biāo)移動事件的類需要實(shí)現(xiàn)這個接口。
以下是聲明為java.awt.event.MouseMotionListener接口:
public interface MouseMotionListener extends EventListener
S.N. | Method & Description |
---|---|
1 |
void mouseDragged(MouseEvent e) Invoked when a mouse button is pressed on a component and then dragged. |
2 |
void mouseMoved(MouseEvent e) Invoked when the mouse cursor has been moved onto a component but no buttons have been pushed. |
這個類繼承的方法從下面的接口:
java.awt.event.EventListener
選擇使用任何編輯器創(chuàng)建以下java程序D:/ > AWT > com > yiibai > gui >
AwtListenerDemopackage com.yiibai.gui; import java.awt.*; import java.awt.event.*; public class AwtListenerDemo { private Frame mainFrame; private Label headerLabel; private Label statusLabel; private Panel controlPanel; public AwtListenerDemo(){ prepareGUI(); } public static void main(String[] args){ AwtListenerDemo awtListenerDemo = new AwtListenerDemo(); awtListenerDemo.showMouseMotionListenerDemo(); } private void prepareGUI(){ mainFrame = new Frame("Java AWT Examples"); mainFrame.setSize(400,400); mainFrame.setLayout(new GridLayout(3, 1)); mainFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ System.exit(0); } }); headerLabel = new Label(); headerLabel.setAlignment(Label.CENTER); statusLabel = new Label(); statusLabel.setAlignment(Label.CENTER); statusLabel.setSize(350,100); controlPanel = new Panel(); controlPanel.setLayout(new FlowLayout()); mainFrame.add(headerLabel); mainFrame.add(controlPanel); mainFrame.add(statusLabel); mainFrame.setVisible(true); } private void showMouseMotionListenerDemo(){ headerLabel.setText("Listener in action: MouseMotionListener"); Panel panel = new Panel(); panel.setBackground(Color.magenta); panel.setLayout(new FlowLayout()); panel.addMouseMotionListener(new CustomMouseMotionListener()); Label msglabel = new Label(); msglabel.setAlignment(Label.CENTER); msglabel.setText("Welcome to TutorialsPoint AWT Tutorial."); panel.add(msglabel); controlPanel.add(panel); mainFrame.setVisible(true); } class CustomMouseMotionListener implements MouseMotionListener { public void mouseDragged(MouseEvent e) { statusLabel.setText("Mouse Dragged: ("+e.getX()+", "+e.getY() +")"); }上一篇:AWT Color類下一篇:AWT AdjustmentEvent類