A CascadeButton should be used to post a Pulldown Menu. This component must be composed of a button, with either a text or graphics Label. Following the Label, this component should also include an arrow graphic, pointing in the direction that the Menu will be posted to distinguish it from a PushButton. The graphic is usually not shown in a MenuBar.
A CascadeButton must have no internal navigation.
CascadeButtons follow the Menu activation model described in Menu Traversal. The following text describes the other operations of this component:
For more information, see the reference pages for Menus.