Cursor does not line up

Question

hi
when i add a cursor to my panel inside a frame
the cursor never lines up with the x and y varibles it is always
a cm away from where i clicked?
do i have to resize the cursor some how?

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
public class CursorCheck extends JPanel {
    Point loc = new Point();
    public CursorCheck() {
        BufferedImage image = getImage();
        Point hotspot = new Point(16,16);
        setCursor(Toolkit.getDefaultToolkit()
                         .createCustomCursor(image, hotspot, null));
        addMouseListener(ml);
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setPaint(Color.blue);
        g2.drawLine(0, loc.y, getWidth()-1, loc.y);
        g2.drawLine(loc.x, 0, loc.x, getHeight()-1);
    private BufferedImage getImage() {
        int w = 27, h = 27,
            type = BufferedImage.TYPE_INT_ARGB_PRE;
        BufferedImage image = new BufferedImage(w, h, type);
        Graphics2D g2 = image.createGraphics();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setPaint(new Color(0x333333));
        g2.draw(new Line2D.Double(w/2, 0, w/2, 8));    // n
        g2.draw(new Line2D.Double(0, h/2, 8, h/2));    // w
        g2.draw(new Line2D.Double(w/2, h-8, w/2, h));  // s
        g2.draw(new Line2D.Double(w-8, h/2, w, h/2));  // e
        g2.dispose();
        return image;
    public static void main(String[] args) {
        JFrame f = new JFrame("click me");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(new CursorCheck());
        f.setSize(400,400);
        f.setLocation(200,200);
        f.setVisible(true);
    private MouseListener ml = new MouseAdapter() {
        public void mousePressed(MouseEvent e) {
            loc = e.getPoint();
            repaint();
}