Modern C++ Programming Cookbook

How to do it...

To implement the curiously recurring template pattern in order to achieve static polymorphism, do the following:

1. Provide a class template that will represent the base class for other classes that should be treated polymorphically at compile time. Polymorphic functions are invoked from this class:

        template <class T>        class control        {        public:          void draw()          {            static_cast<T*>(this)->erase_background();            static_cast<T*>(this)->paint();          }        };

2. Derived classes use the class template as their base class; the derived class is also the template argument for the base class. The derived class implements the functions that are invoked from the base class:

        class button : public control<button>        {        public:          void erase_background()          { std::cout ...