点击时画一个点

Question

您好，我想知道如何获取鼠标在方法之外的位置 鼠标点击我需要在有人点击的地方画一个点。.这是我现在使用的代码。有人可以帮助我吗？

    Dot punt = new Dot();
public void paintComponent(Graphics g) {
    super.paintComponent(g);
    punt.setDot(g, getX(), getY(), 5);
    repaint();
}
@Override
public void mouseClicked(MouseEvent m) {
    // TODO Auto-generated method stub
    gebeurtenisverslag.setText( 
            m.getClickCount() + " keer geklikt op " + m.getX() + "," + m.getY());
}

Answer 1

为鼠标单击修改的类设置一个变量。

private int X;
private int Y;
@Override
public void mouseClicked(MouseEvent m) {
    gebeurtenisverslag.setText( 
            m.getClickCount() + " keer geklikt op " + m.getX() + "," + m.getY());
    X = m.getX();
    Y = m.getY();
}
public void paintComponent(Graphics g) {
    super.paintComponent(g);
    //Probably want to add logic here to verify X & Y have been set
    punt.setDot(g, X, Y, 5);
    repaint();
}