menu1.add(itemDelete);
itemCopy.addActionListener(this);
itemCopy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,InputEve
nt.CTRL_MASK));
itemCut.addActionListener(this);
itemCut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,InputEven
t.CTRL_MASK));
itemPaste.addActionListener(this);
itemPaste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,InputEv
ent.CTRL_MASK));
itemDelete.addActionListener(this);
itemDelete.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE,0
));
menu2=new JMenu("格式(O)"); //建立格式菜单项
menubar.add(menu2);
setJMenuBar(menubar);
itemLine=new JMenu("自动换行"); //建立二级菜单项
line1=new JMenuItem("选择自动换行");
line2=new JMenuItem("取消自动换行");
itemLine.add(line1);
itemLine.add(line2);
menu2.add(itemLine);
line1.addActionListener(this);
line2.addActionListener(this);
itemFont=new JMenuItem("字体");
menu2.add(itemFont);
itemFont.addActionListener(this);
menu3=new JMenu("查看(V)"); //建立查看菜单项
menubar.add(menu3);
setJMenuBar(menubar);
itemstate=new JCheckBoxMenuItem("状态栏"); //设置选勾菜单项
menu3.add(itemstate);