public static void main(String[] args) {
	Display display = new Display();
	Shell shell = new Shell(display);
	shell.setLayout(new FillLayout());
	StyledText text = new StyledText(shell, SWT.NONE);
	text.setText("This is some text in a styled text widget.\n"+
			"It is just like an an editor.\n");
	text.addListener(SWT.Paint, new Listener() {
		public void handleEvent(Event event) {
			event.gc.drawRectangle(20, 20, 40, 40);
		}
	});
	shell.open();
	while(!shell.isDisposed()) {
		if(!display.readAndDispatch()) display.sleep();
	}
	display.dispose();
}