@Override
	protected void createContents(final Composite parent) {
		// define mnemonic activator and create menu bar
		getShell().getDisplay().setData(RWT.MNEMONIC_ACTIVATOR, "CTRL+ALT");
		final Menu menuBar = new Menu(getShell(), SWT.BAR);

		// create cascading menu item
		final MenuItem cascadeMenuItem = createMenuItem(menuBar, SWT.CASCADE, "&Cascade Menu Item");

		// create sub menu item of cascading menu item
		final Menu submenu = new Menu(getShell(), SWT.DROP_DOWN);
		cascadeMenuItem.setMenu(submenu);
		createMenuItem(submenu, SWT.PUSH, "&Submenu");

		// create top level menu item
		createMenuItem(menuBar, SWT.PUSH, "&Top Level Menu Item");

		// set menu bar to shell
		getShell().setMenuBar(menuBar);
	}


	private static MenuItem createMenuItem(final Menu parent, final int style, final String text) {
		final MenuItem menuItem = new MenuItem(parent, style);
		menuItem.setText(text);
		menuItem.addSelectionListener(new SelectionAdapter() {
			@Override
			public void widgetSelected(final SelectionEvent e) {
				System.out.println("Selected item: " + text);
			}
		});
		return menuItem;
	}