public void mouseDown(MouseEvent e) { if (isChecked()) { if (e.button == 1 && e.stateMask == SWT.None) { point = new Point(e.x, e.y); // System.out.println( point ); tracker.setRectangles(new Rectangle[] {new Rectangle(point.x, point.y, 0, 0)}); // tracker.setStippled( true ); tracker.open(); } } }