Pointers to class members can only be passed as arguments to functions, or used with the following operators:

• assignment operators
• comparison operators
• .*
• —>*
• ?: conditional (ternary) operator
• && logical AND operator
• || logical OR operator

In order to call a member function pointer, one must supply an instance of the class for it to call upon. 

For example:

class A {
public:
   myex();
};
typedef int (A::*Amfptr)();
myex()
{
   Amfptr mmyex = &A::myex;
   return (*mmyex)();  //error
}

This will compile:

class A {
public:
   myex();
};
typedef int (A::*Amfptr)();
foo()
{
   A a;
   Amfptr mmyex = &A::myex;
   return (a.*mmyex)();
}