Thread: casting a void* to a pointer to a member function

This is driving me nuts! Here's my problem, I'll illustrate by example here for clarity.
In brief, what I want to do is pass the address of a member function of a child class into a function of it's base class.
But the compiler insinuates that this just isn't possible because child::function does not match parameter parent::function.
I have tried all sorts of casts but the compiler stands firm.
So my idea was to define the parameter i the parent class as type void*.
Inside the function, I could then cast the child::function into a parent::function beneath the prying eyes of the compiler, and thus go about my day.
But now it just says "cannot convert 'function' from type 'void *' to type 'void (Parent::*)()'..."


example:

Code:

class Parent {
public:

void (Parent:: *invoke)(void);

void AttachA(void (Parent:: *function)(void)) {
invoke = function;
}

void AttachB(void * function) {
invoke = (void (Parent:: *)(void)) function;
}
};




class Child : public Parent {
public:

void ThisFunction() {

 }


void Attach() {
 
 AttachA(&Child::ThisFunction); //...error: no matching call to AttachA(void (Child::(*)())...(canidates are "Parent::")...

 AttachA(&Parent::ThisFunction); //...error: ThisFunction not a member of parent...

 AttachB((void*)ThisFunction); //..error: cannot resolve based on conversion to type void*...
}

};

Anyone know a good way around that?