ActiveX控件的应用与工作原理：控件的编写，如何为控件安排属性、方法、事件、属性页，持久性存储，控件如何通知容器自身属性的改变。如何注册控件与取消控件注册等。-Application and ActiveX control works: preparation of control, how to arrange for the control properties, methods, events, property pages, persistent storage, control t