public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    final Button button = new Button(shell, SWT.NONE);
    button.setSize(100, 100);
    button.setText("Click");
    shell.pack();
    shell.open();
    button.addListener(
        SWT.MouseDown,
        new Listener() {
          @Override
          public void handleEvent(Event e) {
            System.out.println(
                "Mouse Down (button: " + e.button + " x: " + e.x + " y: " + e.y + ")");
          }
        });
    final Point pt = display.map(shell, null, 50, 50);
    new Thread() {
      Event event;

      @Override
      public void run() {
        try {
          Thread.sleep(300);
        } catch (InterruptedException e) {
        }
        event = new Event();
        event.type = SWT.MouseMove;
        event.x = pt.x;
        event.y = pt.y;
        display.post(event);
        try {
          Thread.sleep(300);
        } catch (InterruptedException e) {
        }
        event.type = SWT.MouseDown;
        event.button = 1;
        display.post(event);
        try {
          Thread.sleep(300);
        } catch (InterruptedException e) {
        }
        event.type = SWT.MouseUp;
        display.post(event);
      }
    }.start();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) display.sleep();
    }
    display.dispose();
  }