Alternative to c++ static virtual methods

Question

In C++ is not possible to declare a static virtual function, neither cast a non-static function to a C style function pointer.

Now, I have a plain ol\' C SDK that us

Answer 1

A common pattern when passing a function pointer (a callback) to a C SDK uses the fact that many such functions allow a void * parameter that is "user data". You can define your callbacks to be simple global functions, or static class member functions. Then each callback can cast the "user data" parameter to a base class pointer so you can call a member function that does the work of the callback.