Cascade Menu : Menu « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. Menu

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;

public class MenuCascade {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new GridLayout());

    Button bn = new Button(shell, SWT.FLAT);
    bn.setText("Right Click to see the popup menu");
    
    Menu popupMenu = new Menu(bn);
    MenuItem newItem = new MenuItem(popupMenu, SWT.CASCADE);
    newItem.setText("New");
    MenuItem refreshItem = new MenuItem(popupMenu, SWT.NONE);
    refreshItem.setText("Refresh");
    MenuItem deleteItem = new MenuItem(popupMenu, SWT.NONE);
    deleteItem.setText("Delete");

    Menu newMenu = new Menu(popupMenu);
    newItem.setMenu(newMenu);

    MenuItem shortcutItem = new MenuItem(newMenu, SWT.NONE);
    shortcutItem.setText("Shortcut");
    MenuItem iconItem = new MenuItem(newMenu, SWT.NONE);
    iconItem.setText("Icon");

    bn.setMenu(popupMenu);
    
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
  }
}

17.30.Menu
	17.30.1.	Add MenuItem to Menu
	17.30.2.	Add Menu Separator
	17.30.3.	Cascade Menu
	17.30.4.	Fill a menu dynamically (when menu shown)
	17.30.5.	Enable menu items dynamically (when menu shown)