You cannot obtain a pointer to a class interface since a class interface lacks the corresponding type to pass to the second parameter 的接口指针。但无法获得指向类接口的指针,这是因为类接口中没有传递给第二个参数(
Specifies the most general representation of a pointer to a member of a class to be one that uses either no inheritance or single inheritance 指定指向类成员的指针的最通用表示形式为不使用继承或使用单一继承的表示形式。
The subclass always includes the superclass and defines a pointer to the class description and to the metaclass description if there is a new one 子类总是包含了基类,还定义指向类描述的指针以及指向元类描述? ?如果有新的的话? ?的指针。
When you specify one of these inheritance - model options , that model is used for all pointers to class members , regardless of their inheritance type or whether the pointer is declared before or after the class 当指定这些继承模型选项之一时,该模型用于所有指向类成员的指针,而不管它们的继承类型或指针是在类前还是类后声明。