Question

I am extending a template class using C++ in Visual Studio 2005. It is giving me an error when I try to extend the template base class with:

template <class K, class D> class RedBlackTreeOGL : public RedBlackTree<K, D>::RedBlackTree  // Error 1 {  public:   RedBlackTreeOGL();   ~RedBlackTreeOGL(); 

and a second error when I try to instantiate the object:

RedBlackTreeOGL<double, std::string> *tree = new RedBlackTreeOGL<double, std::string>; // error 2 

Error 1:

**redblacktreeopengl.hpp(27) : error C2039: ‘{ctor}’ : is not a member of ‘RedBlackTree’ with [ K=double, D=std::string ] **

Error 2:

main.cpp(50) : see reference to class template instantiation ‘RedBlackTreeOGL’ being compiled

Answer 1

The code is trying to inherit a constructor, not a class 🙂

The start of the class declaration should be

template <class K, class D> class RedBlackTreeOGL : public RedBlackTree<K, D>