WBadge

A WBadge is a short text, often shown against a contrasting background, which is used to convey important information at a glance.

Example
A Simple Badge
source 
  void Badge() {
    WContainerWidget container = new WContainerWidget();
    WBadge badge = new WBadge("A Simple Badge");
    container.addWidget(badge);
  }

A badge can also be added to any WPushButton or WMenuItem. This is useful to attract the user's attention to a particular button or menu item.

Example
source 
  void BadgeInPopupMenu() {
    final WCssDecorationStyle redBadgeStyle = new WCssDecorationStyle();
    redBadgeStyle.setBackgroundColor(new WColor(255, 0, 0));
    final WCssDecorationStyle yellowBadgeStyle = new WCssDecorationStyle();
    yellowBadgeStyle.setBackgroundColor(new WColor(255, 200, 0));
    yellowBadgeStyle.setForegroundColor(new WColor(0, 0, 0));
    WContainerWidget container = new WContainerWidget();
    WPushButton button = new WPushButton("Features");
    container.addWidget(button);
    WPopupMenu popupMenu = new WPopupMenu();
    popupMenu.addItem("Old boring feature");
    WBadge newBadge = new WBadge("New");
    newBadge.setDecorationStyle(redBadgeStyle);
    newBadge.setUseDefaultStyle(false);
    popupMenu.addItem("New exciting feature").setBadge(newBadge);
    WBadge premiumBadge = new WBadge("Premium");
    premiumBadge.setDecorationStyle(yellowBadgeStyle);
    premiumBadge.setUseDefaultStyle(false);
    popupMenu.addItem("Premium feature").setBadge(premiumBadge);
    button.setMenu(popupMenu);
    WBadge buttonBadge = new WBadge("1");
    buttonBadge.setDecorationStyle(redBadgeStyle);
    buttonBadge.setUseDefaultStyle(false);
    button.setBadge(buttonBadge);
  }