[news.eclipse.platform] JFace, MenuManager, submenu in a popup-menu

[martin.j.steer@xxxxxxxxx (Martin J. Steer)]

I've Googled for this and scoured the web, but either I'm using the wrong 
search terms or perhaps it's just something that makes me unable to 
comprehend this. 

I'm trying to add a submenu to a popup menu in a TableViewer. The 
popup-menu works fine, but the submenu never shows. This is the code:

     // Sub menu
     final MenuManager subMenu = new MenuManager("Branch");
     subMenu.addMenuListener(new IMenuListener() {
        public void menuAboutToShow(IMenuManager manager) {
           manager.add(firstSubAction);
           manager.add(secondSubAction);
           manager.add(new 
Separator(IWorkbenchActionConstants.MB_ADDITIONS));
        }
     });

     // Main Popup menu
     final MenuManager popupMenu = new MenuManager("#PopupMenu");
     popupMenu.setRemoveAllWhenShown(true);
     popupMenu.addMenuListener(new IMenuListener() {
        public void menuAboutToShow(IMenuManager manager) {
           manager.add(firstAction);
           manager.add(secondAction);
           manager.add(thirdAction);
           manager.add(subMenu);
           manager.add(new 
Separator(IWorkbenchActionConstants.MB_ADDITIONS));
        }
     });

     final Menu menu = popupMenu.createContextMenu(viewer.getControl());
     viewer.getControl().setMenu(menu);
     getSite().registerContextMenu(popupMenu, viewer);

I thought this would result in a popup menu with first-, second- and 
thirdAction and then "Branch" with a submenu containing firstSub- and 
secondSubAction.

Any help is greatly appreciated.

kind regards,
   martin