C++ Function Callbacks: Cannot convert from a member function to a function signature

Question

I\'m using a 3rd party library that allows me to register callbacks for certain events. The register function looks something like this. It uses the Callback signature.

Answer 1

Member functions are not convertible to the normal functions for its own good reasons. If your design allows, then make MyStruct::myCallback() a static member method and the code should work fine.

struct MyStruct {
  ...
  static int myCallback(std::string str);
  ^^^^^^
};