How to call a class member function via function pointer in map [C++]

S

Shaitan00

Junior Contributor
Joined
Aug 11, 2003
Messages
358
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I'm trying to declare a std::map that is keyed by a char and has a function pointer as a second parameter, these functions would be a member function of my class. But for some odd reason I cannot call the functions when extracted...

So, I have a class A as shown below, it contains a map as well as a function

Code: 
class A
{
private:
	map<char, void (A::*)(void)> mapA;
public:
	void func();

Next I have main code that looks like this:
Code: 
A::A()	// constructor
{
	// Generate User Options
	mapA['a'] = &A::func;
}

Now, I try to execute func by extracting it from the map and running the function:
Code: 
	map<char, void (A::*)(void)>::iterator it;
	for ( it=mapA.begin() ; it != mapA.end(); it++ )
	{
		(*it).second();
	}

I would assume this would launch function "func" as it is stored in the map, but instead it generates the following error message:
error C2064: term does not evaluate to a function taking 0 arguments

Any help would be greatly appreciated...
Thanks,
 
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