... Allocate Object to Classes 分配对象到多个类 Display Object in Classes 显示多个类中的对象 Allocate Class to Classes 分配类到多个类 ...
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In your given example program1, display method is defined in both base and sub classes and you are trying to invoke it with the sub class object.
在你给的例子程序1，显示的方法是在基站和子类的定义和你试图调用它的子类对象。
For ATL-based COM object classes, class View reads the COM map in the ATL class to display the relationship between the ATL class and any interfaces it implements.
对基于AT L的COM对象类，类视图读取atl类中的COM映射以显示AT l类和它实现的任何接口间的关系。
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