child class method pointer to method parent argument c++

Question

it might be strange what i'm trying to see and i will try to clarify as much as possible. I'm using gcc 4.8 on ubuntu 14.04 and C++11.

What i want trying to do is:

• make a class A
• make a function in that class A which gets as argument
• a pointer to a class member of the same class
• make a new class B which inherits from A
• make a new method of class B

• give a pointer to that method of class B to a method of parentclass A as argument

  class A{
      typedef void(A::*METHOD);        
  
      void executeMethod(METHOD arg){};
  }
  
  class B : A{
  
      void sampleMethod(){};
  
      void childMethod(){              
  
        this->executeMethod(&B::sampleMethod); //<== error
      }
  }
  

However this brings me the following error in codeblocks:

error: no matching function to call for 'B::executeMethod(void B::*)'

Is there any way around this? Is there anything else i need to do to make it clear to you, what i'm trying to accomplish?

Answer 1

The problem is that sampleMethod isn't a member of A, it's a member of B and can't convert to a void(A::*).

Did you consider using virtual methods perhaps?