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();
}
}