Calling a c++ class's member function from Fortran?

[frinxor]

I have something like this:

Class A
{

public:

void CalculateSolution();

void UpdateSolution(int newSolution);

private:

int solution;

}

where CalculateSolution calls a very time-intensive Fortran function. Is there a way the Fortran function can callback to UpdateSolution(int) every once in a while, while it is running? I've read through the mixed language topics, but that only addresses global functions.

If not, I guess I can just create a global function with a pointer to my instance of Class A to do the update?

[Steven_L_Intel1]

Fortran can't call C member functions directly - even if you can get the external name, you don't know how to pass the context it wants. Create a regular C++ wrapper function.

[frinxor]

Did you mean to switch the C/C++ ?

[Steven_L_Intel1]

I mean write an "extern" C++ function, callable from Fortran, that calls the member function.