Shows the development of a simple component, illustrating the interaction between client and component, object lifetime and circular references, debugging clients and components, and using shared methods and instance methods.

• 说明简单组件的开发,阐释了客户端和组件之间的交互、对象生存期和循环引用、客户端和组件的调试以及共享方法和实例方法的使用。