Hello Christian,

If I understand your problem right, you could
use class pointers (but you won't achieve strong 
typing at compile time), or templates.

TEMPLATE EXAMPLE:

template <class T> class A {
 virtual void foo(T param);
};

CLASS POINTER EXAMPLE:

class A {
public:
 virtual void foo(A* param);
};

class B : A {
 virtual void foo(A* param)  
 {
  B* cast = dynamic_cast<B*>(a);
  if (cast) {
   ...
  }
 }
};

cheers,

 Manuel

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