在Java窗口中捕获(捕获)鼠标光标

编辑：

这是你的一些SSCCE.此代码会将鼠标捕获到窗口中.要离开你只需要在生成的框架内直接移动到关闭按钮.如果您注意到鼠标试图离开时它会自动返回(0,0).我需要知道的是如何让它回到它退出的坐标.我尝试使用getX()和getY()来代替(0,0),但是机器人不会在那里返回鼠标(我认为响应时间会变慢).我也让机器人将鼠标移回crosshair.x和crosshair.y但是如果用户在正确的时刻点击,这个(以及其他人)仍然允许鼠标逃脱.有什么想法吗？

主类：

import java.awt.AWTException;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferStrategy;
import java.awt.image.MemoryImageSource;
import java.awt.Point;
import java.awt.Robot;
import java.awt.Toolkit;
import javax.swing.JFrame;

public class Game extends JFrame implements MouseMotionListener,MouseListener{

    private int windowWidth = 640;
    private int windowHeight = 480;
        private Crosshair crosshair;

    public static void main(String[] args) {
        new Game();
    }

    public Game() {
        this.setDefaultCloSEOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(windowWidth,windowHeight);
        this.setResizable(false);
        this.setLocation(0,0);
        this.setVisible(true);

        this.createBufferStrategy(2);
                addMouseMotionListener(this);
                addMouseListener(this);
        initGame();

        while(true) {
            long start = System.currentTimeMillis();
            gameLoop();
            while(System.currentTimeMillis()-start < 5) {
                            //empty while loop
            }
        }
    }

    private void initGame() {
            hideCursor();
            crosshair = new Crosshair (windowWidth/2,windowHeight/2);
    }

        private void gameLoop() {
            //game logic
            drawFrame();
        }

        private void drawFrame() {

            BufferStrategy bf = this.getBufferStrategy();
            Graphics g = (Graphics)bf.getDrawGraphics();
            try {
                g = bf.getDrawGraphics();
                Color darkBlue = new Color(0x010040);
                g.setColor(darkBlue);
                g.fillRect(0,windowWidth,windowHeight);
                drawCrossHair(g);
            } finally {
                g.dispose();
            }
            bf.show();
            Toolkit.getDefaultToolkit().sync();
        }

        private void drawCrossHair(Graphics g){
            Color yellow = new Color (0xEDFF62);
            g.setColor(yellow);
            g.drawOval(crosshair.x,crosshair.y,40,40);

            g.fillArc(crosshair.x + 10,crosshair.y + 21,20,-45,-90);
            g.fillArc(crosshair.x - 1,crosshair.y + 10,-135,-90);
            g.fillArc(crosshair.x + 10,crosshair.y - 1,-225,-90);
            g.fillArc(crosshair.x + 21,-315,-90);
        }

        @Override
        public void mouseDragged(MouseEvent e) {
        //empty method
        }

        @Override
        public void mouseMoved(MouseEvent e) {
        crosshair.x = e.getX();
        crosshair.y = e.getY();
        }

        private void hideCursor() {
            int[] pixels = new int[16 * 16];
            Image image = Toolkit.getDefaultToolkit().createImage(new MemoryImageSource(16,16,pixels,16));
            Cursor transparentCursor = Toolkit.getDefaultToolkit().createCustomCursor(image,new Point(0,"invisiblecursor");
            getContentPane().setCursor(transparentCursor);
    }

        public void mouseExited(MouseEvent e) {
            System.out.println("Event: " + e);
            try {
                Robot robot = new Robot();
                robot.mouseMove(0,0);// When I use (getX(),getY()) instead of (0,0) the robot will not move the mouse at all even though getX() and getY() are the coordinates I want the mouse to be moved to.  Also the mouse can still escape,even when crosshair.x and crosshair.y are used as the coordinates.  It seems that robot is too slow.
            }
            catch (AWTException ex) {
                ex.printStackTrace();
            }
        }

        public void mouseEntered(MouseEvent e){
        }

        public void mousePressed(MouseEvent e) {
        }

        public void mouseReleased(MouseEvent e) {
        }

        public void mouseClicked(MouseEvent e) {
        }
}

另一类：

public class Crosshair{
        public int x;
    public int y;
    public Crosshair(int x,int y) {
        this.x = x;
        this.y = y;
        }
}