0120おれさま ◆6CTEZS59O00a
2018/10/07(日) 05:31:13.22public class Main extends JFrame {
static Point pt;
Main() {
setSize(100, 100);
setLocationRelativeTo(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
addMouseListener(
new MouseListener() {
public void mouseClicked(MouseEvent e) {}
public void mousePressed(MouseEvent e) {//@
pt = e.getPoint();
}
public void mouseReleased(MouseEvent e) {//B
pt = null;
}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
}
);
addMouseMotionListener(
new MouseMotionListener() {
public void mouseDragged(MouseEvent e) {//A
Point currentPt = e.getLocationOnScreen();
setLocation(currentPt.x - pt.x, currentPt.y - pt.y);//
}
public void mouseMoved(MouseEvent e) {}
}
);
}
public static void main(String[] args) {
Main ma = new Main();
ma.setVisible(true);
}
}