问一个怎么监听全屏幕的问题

[ww_goddess]

我想写一个小程序，就是鼠标移动到屏幕任何一点，就显示该点的RGB值。
程序是写完了，但只能在程序的当前窗口中使用，移出去了就没用了。
其他界面代码就略了，请帮我看看下面的代码怎么改好。
private void formMouseMoved(java.awt.event.MouseEvent evt)
try {
java.awt.Robot r=new java.awt.Robot();
String s=r.getPixelColor((int)evt.getX(),(int)evt.getY()).toString();

jLabel1.setText(s);
} catch (AWTException ex) {
ex.printStackTrace();
}
}

[joejoe1991]

我以前写的 你看看吧 初学者 哪里写的不对的还请指教 呵呵。

import java.awt.*;

import javax.swing.*;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import java.awt.event.MouseMotionAdapter;

public class Frame1 extends JFrame {
JPanel contentPane;
Robot bot=null;
JTextField txtred = new JTextField();
JTextField txtblue = new JTextField();
JTextField txtgreen = new JTextField();
JLabel jLabel1 = new JLabel();
JLabel jLabel2 = new JLabel();
JLabel jLabel3 = new JLabel();
int screenwidth=0;
public Frame1() {
try {
setDefaultCloseOperation(EXIT_ON_CLOSE);
jbInit();
} catch (Exception exception) {
exception.printStackTrace();
}
}

/**
* Component initialization.
*
* @throws java.lang.Exception
*/

private void jbInit() throws Exception {
contentPane = (JPanel) getContentPane();
contentPane.setLayout(null);
this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);
this.setResizable(false);
setSize(new Dimension(229, 114));
setTitle("得到RGB值");
screenwidth=(int)Toolkit.getDefaultToolkit().getScreenSize().getWidth();
this.setLocation(0,0);

try {
bot=new Robot();
} catch (Exception ex) {
System.out.println(ex);
}
txtred.setBorder(BorderFactory.createEtchedBorder());
txtred.setBounds(new Rectangle(58, 8, 157, 18));
txtblue.setBorder(BorderFactory.createEtchedBorder());
txtblue.setBounds(new Rectangle(58, 36, 157, 18));
txtgreen.setBorder(BorderFactory.createEtchedBorder());
txtgreen.setBounds(new Rectangle(58, 66, 157, 18));
jLabel1.setText("红");
jLabel1.setBounds(new Rectangle(15, 1, 20, 30));
jLabel2.setText("蓝");
jLabel2.setBounds(new Rectangle(15, 29, 17, 31));
jLabel3.setText("绿");
jLabel3.setBounds(new Rectangle(15, 49, 14, 41));
contentPane.addMouseMotionListener(new
Frame1_contentPane_mouseMotionAdapter(this));
contentPane.add(jLabel3);
contentPane.add(jLabel2);
contentPane.add(txtred);
contentPane.add(txtblue);
contentPane.add(txtgreen);
contentPane.add(jLabel1);
this.setVisible(true);

new xiancheng(this);
this.setAlwaysOnTop(true);

}

public static void main(String[] args)
{
Frame1 bb=new Frame1();

}


class xiancheng extends Thread{

public xiancheng(Frame1 aa)
{
super("xiancheng");

this.start();
}

public void run()
{
try {
while (true) {
int x = (int) MouseInfo.getPointerInfo().getLocation().getX();
int y = (int) MouseInfo.getPointerInfo().getLocation().getY();


Color color = bot.getPixelColor(x, y);
txtred.setText("" + color.getRed());
txtblue.setText("" + color.getBlue());
txtgreen.setText("" + color.getGreen());

this.sleep(10);
}
} catch (InterruptedException ex) {
} catch (HeadlessException ex) {
}
}
}

int i=0;
public void contentPane_mouseMoved(MouseEvent e) {
if (i%2==0)
{
this.setLocation(screenwidth-this.getWidth(),0);
i++;
}else
{
this.setLocation(0,0);
i++;
}
}


}


class Frame1_contentPane_mouseMotionAdapter extends MouseMotionAdapter {
private Frame1 adaptee;
Frame1_contentPane_mouseMotionAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
}

public void mouseMoved(MouseEvent e) {
adaptee.contentPane_mouseMoved(e);
}
}

[orangemike]

ls 写的好！我顶！

[ww_goddess]

谢谢，很有用

[quaitong]

二楼是牛人，顶一个。。。

[vkong_007]

不错.值得学习