GUI Hierarchy

• Component inherits from Object and is subclassed for most GUI objects
• ``Primitive'' objects are directly derived from Component
• Container objects are a subclass of Component
• MenuComponent inherits from Object and is subclassed for Menu elements
• Layout derives from Object and is used for geometry management
• Event is derived from Object and encodes all the event information
• Peer objects are used to give the native implementation, and should be ignored