4.

4.

 class object {   public:     template <class T> virtual      T * dynamic_cast(const type_info& t = typeid(T) ) };  , 1995 

2 IUnknown . , . , , . QueryInterface ( ) ++- dynamic_cast, .

, QueryInterface , , this , . , , C++ dynamic_cast.

QueryInterface , IUnknown , . , , .

Unknown
QueryInterface
QueryInterface
QueryInterface


QueryInterface IUnknown




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