All extended container widgets support the items resource. The items resource represents the collection of objects to be displayed in a list. The widgets also provide itemCount and selectionPolicy resources. These are similar to the resources of the same name in the common widgets' CwList. All extended container widgets support using an OrderedCollection for the items resource. Some of the widgets are more flexible in the value type for the items resource. Consult the definition of the items resource in a particular widget to see what type of value is required.