测试鼠标的事件响应,但是没反应。下面是代码
[code="java"]import javax.swing.*;
import java.awt.event.*;
import java.awt.BorderLayout;
public class TestMouseMotion implements MouseListener {
/**
* 测试底层鼠标事件
*/
int flag;//响应事件的标识;
JFrame mf = new JFrame("鼠标事件测试");
JLabel g_m_label = new JLabel("鼠标测试!", SwingConstants.RIGHT);
public TestMouseMotion(){
flag = 7;
mf.setBounds(100, 100, 300, 200);
//BorderLayout mf_layout = new BorderLayout();
//mf.setLayout(mf_layout);
mf.getContentPane().add(g_m_label, BorderLayout.SOUTH);
if (flag == 0){
mf.add(new JLabel("鼠标放在了面板上!", SwingConstants.CENTER));
}
else if(flag == 1){
mf.add(new JLabel("鼠标点击了面板!", SwingConstants.CENTER));
}
else if (flag == 2){
mf.add(new JLabel("鼠标离开了面板!", SwingConstants.CENTER));
}
mf.setResizable(false);
mf.setVisible(true);
}
public static void main(String[] args) {
new TestMouseMotion();
}
public void mousePressed(MouseEvent me) {
}
public void mouseReleased(MouseEvent me) {
}
public void mouseClicked(MouseEvent me) {
flag = 0;
}
public void mouseEntered(MouseEvent me) {
flag = 1;
}
public void mouseExited(MouseEvent me) {
flag = 2;
}
}
[/code]
由于是自学,基础不扎实,swing的事件响应和框架面板一团浆糊。希望有人帮忙,谢谢。