Question

I am trying to use a function pointer, but the 3 lines below just do not seem to want to cooperate…

I’m getting error code C3867.

Can you see what I’m doing wrong?

In .h file

void MyFunc(int, FILEINFO*(*)(FILEINFO*), FILEINFO*, int);

The definition in the .cpp file

void MyFunc(int number, FILEINFO*(*GetFiles)(FILEINFO*), FILEINFO* args, int type);

Then here is where I’m actually calling the function

MyFuncClass->MyFunc(GetNumber(), &BigClass::PassThis, GetArgs(), TheType);

Any problems jump out?

Answer 1

You cannot pass a non-static member function of a class as an
ordinary function pointer, since a member function implicitly uses the
this-pointer. A solution for this is to define a static member function that takes a pointer
to the class as it’s first argument and wraps the call to BigClass::PassThis and pass a pointer to that member function instead. Please see
The Function Pointer Tutorials for more information.

A better solution might be to look into using functors instead.