首先说明一点
按键绑定到键盘和设置快捷键是不一样的
按键绑定键盘是按键有了和button一样的功能,没有焦点时也能使用(WHEN_IN_FOCUSED_WINDOW),甚至有时候单独作为一个事件(有自己独立的AbstractAction子类的时候
设置快捷键紧紧是设置了快捷键(有点牵强)
键盘事实使用的监视器更加严格,是ActionListener的子接口Action, 不过AbstractAction类已经帮我实现了,我们只需要像以前那样extends AbstractAction,然后重写ActionPerformed()
InputMap inputmap1=button1.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);//获得映射 inputmap1.put(KeyStroke.getKeyStroke("A"),"dog");//前面获得键位,后面参数是一个映射的关键字 //为按钮的键盘操作指定监视器有两个语句 ActionMap actionmap1=button1.getActionMap()//获得一个可以加监视器的ActionMap对象 actionmap.put("dog",listener);//终于添加监视器了 - -
完整代码
class MyWin extends JFrame implements ActionListener{ JButton button1; MyWin(){ init(); setVisible(true); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } void init(){ setLayout(new FlowLayout()); button1=new JButton("click"); add(button1); add(new JTextField(8)); ActionPolice actionPolice1=new ActionPolice(); InputMap inputmap1=button1.getInputMap(JComponent.WHEN_FOCUSED); inputmap1.put(KeyStroke.getKeyStroke("A"),"dog"); ActionMap actionmap1=button1.getActionMap(); actionmap1.put("dog", actionPolice1); } } class ActionPolice extends AbstractAction{ public void actionPerformed(ActionEvent e){ JButton button1=(JButton)e.getSource(); int x=button1.getBounds().x; int y=button1.getBounds().y; button1.setLocation(x+10,y+10); } }
关于打印组件那部分
很遗憾,并不知道是什么,代码有莫名其妙的问题
不理了,交上代码就跑路
class MyWin extends JFrame implements ActionListener{ PrintJob p=null; Graphics g=null; JTextArea textArea1=new JTextArea(10,10); JButton button1=new JButton("文本框"),button2=new JButton("window"),button3=new JButton("button"); MyWin(){ super("dffsd"); init(); setVisible(true); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } void init(){ // setLayout(new FlowLayout()); button1.addActionListener(this); button2.addActionListener(this); button3.addActionListener(this); add(textArea1,"Center"); JPanel pane1=new JPanel(); pane1.add(button1); pane1.add(button2); pane1.add(button3); add(pane1,"South"); } public void actionPerformed(ActionEvent e){ if(e.getSource()==button1){ p=((Component)e.getSource()).getToolkit().getPrintJob(this,"ok",null); g=p.getGraphics(); g.translate(120, 200); textArea1.printAll(g); g.dispose(); p.end(); } if(e.getSource()==button2){ p=getToolkit().getPrintJob(this,"ok",null); g=p.getGraphics(); g.translate(120, 200); this.printAll(g); g.dispose(); p.end(); } if(e.getSource()==button2){ p=getToolkit().getPrintJob(this,"ok",null); g=p.getGraphics(); g.translate(120,200); button1.printAll(g); g.translate(78, 0); button2.printAll(g); g.translate(66, 0); button3.printAll(g); g.dispose(); p.end(); } }