AWT MouseMotionAdapter 类
简介
类 MouseMotionAdapter 是用于接收鼠标移动事件的抽象(适配器)类。此类的所有方法均为空。此类是创建侦听器对象的便利类。
类声明
以下是 java.awt.event.MouseMotionAdapter 类的声明:
public abstract class MouseMotionAdapter extends Object implements MouseMotionListener
类构造函数
S.N. | 构造函数 &描述 |
---|---|
1 | MouseMotionAdapter() |
类方法
S.N. | 方法 &描述 |
---|---|
1 | void mouseDragged(MouseEvent e) 当鼠标按钮在组件上按下然后拖动时调用。 |
2 | void mouseMoved(MouseEvent e) 当鼠标光标移动到组件上但未按下任何按钮时调用。 |
继承的方法
此类从以下类继承方法:
java.lang.Object
MouseMotionAdapter 示例
使用您选择的任何编辑器在 D:/ > AWT > com > tutorialspoint > gui > 中创建以下 Java 程序
AwtAdapterDemo.javapackage com.tutorialspoint.gui; import java.awt.*; import java.awt.event.*; public class AwtAdapterDemo { private Frame mainFrame; private Label headerLabel; private Label statusLabel; private Panel controlPanel; public AwtAdapterDemo(){ prepareGUI(); } public static void main(String[] args){ AwtAdapterDemo awtAdapterDemo = new AwtAdapterDemo(); awtAdapterDemo.showMouseMotionAdapterDemo(); } 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 showMouseMotionAdapterDemo(){ headerLabel.setText("Listener in action: MouseMotionAdapter"); Panel panel = new Panel(); panel.setBackground(Color.magenta); panel.setLayout(new FlowLayout()); panel.addMouseMotionListener(new MouseMotionAdapter(){ public void mouseMoved(MouseEvent e) { statusLabel.setText("Mouse Moved: ("+e.getX()+", "+e.getY() +")"); } }); Label msglabel = new Label(); msglabel.setAlignment(Label.CENTER); msglabel.setText("Welcome to TutorialsPoint AWT Tutorial."); panel.add(msglabel); controlPanel.add(panel); mainFrame.setVisible(true); } }
使用命令提示符编译程序。转到 D:/ > AWT 并键入以下命令。
D:\AWT>javac com utorialspoint\gui\AwtAdapterDemo.java
如果没有错误,则表示编译成功。使用以下命令运行程序。
D:\AWT>java com.tutorialspoint.gui.AwtAdapterDemo
验证以下输出
