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(); }