Compiler Error C3766

 

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The latest version of this topic can be found at Compiler Error C3766.

type' must provide an implementation for the interface method 'function'

A class that inherits from an interface must implement the interface members.

The following sample generates C3766.

// C3766.cpp  
// compile with: /clr /c  
  
delegate void MyDel();  
  
interface struct IFace {  
   virtual event MyDel ^ E;  
};  
  
ref struct Class1 : public IFace {};   // C3766  
  
// OK  
ref struct Class2 : public IFace {  
   virtual event MyDel ^ E {  
      void add(MyDel ^) {}  
      void remove(MyDel ^) {}  
   }  
};  

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