import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class MyPanel extends JPanel{
// Image img=Toolkit.getDefaultToolkit().getImage("C:\图片1.png");
public void Paint(Graphics g){
g.drawImage(img,0,0,this);
}
}
public class MainForm extends JFrame implements ActionListener
{
JMenu mSystem=new JMenu("系统");
JMenuItem mExit=new JMenuItem("退出");
JMenu mOperate=new JMenu("数据操作");
JMenuItem mAdd=new JMenuItem("添加");
JMenuItem mDel=new JMenuItem("删除");
JMenuItem mModify=new JMenuItem("修改");
JMenu mQuery=new JMenu("查询");
JMenuItem mName=new JMenuItem("按姓名查找");
JMenuItem mScore=new JMenuItem("按成绩查找");
JMenu mHelp=new JMenu("帮助");
JMenuItem mAbout=new JMenuItem("信息");
JMenuBar mBar=new JMenuBar();
MainForm()
{super("学生成绩管理系统");
setSize(875,583);
mSystem.add(mExit);
mOperate.add(mAdd);
mOperate.add(mDel);
mOperate.add(mModify);
mQuery.add(mName);
mQuery.add(mScore);
mHelp.add(mAbout);
mBar.add(mSystem);
mBar.add(mOperate);
mBar.add(mQuery);
mBar.add(mHelp);
setJMenuBar(mBar);
mExit.addActionListener(this);
mAdd.addActionListener(this);
mDel.addActionListener(this);
mModify.addActionListener(this);
mName.addActionListener(this);
mScore.addActionListener(this) ;
mAbout.addActionListener(this);
setContentPane(new MyPanel());
setVisible(true);}
public void actionPerformed(ActionEvent ae)
{if(ae.getSource()==mExit)System.exit(0);
if (ae.getSource()==mAbout) JOptionPane.showMessageDialog(this,"学生成绩管理系统","信息",JOptionPane.INFORMATION_MESSAGE)
if(ae.getSource()==mAdd) new AddForm().setVisible(true);
if(ae.getSource()=mDel) new DeleteForm().setVisible(true);
if (ae.getSource()==mModify) new ModifyForm().setVisible(true);
if(ae.getSource()==mName) new NameQueryForm().setVisible(true);
if(ae.getSource()==mScore) new ScoreQueryForm().setVisible(true);
}
public static void main(String[] args)
{new MainForm();
}