static bool robotDragMouse(final Point a, int delay, final Point b) ctex {
  mouseMover().enable();
  if (mouseMover().blocked()) false;
  final new Robot robot;
  robot.mouseMove(a.x, a.y);
  final int button = InputEvent.BUTTON1_DOWN_MASK;
  robot.mousePress(button);
  swingLater(delay, r {
    mouseMover().moveMouse(Pt(b.x, b.y));
    robot.mouseRelease(button);
  });
  true;
}