How to master functor?(done)

[codewaggon]

How to master functor and what's wrong in the peice of the code below?
Thank's in advance.

#include <iostream>
#include <functional>
using namespace std;

class Node{
public:
    explicit Node(int i = 300){ cout << "Node Constructor has called!" << endl; }
private:
    int _i, _j, _k;
};


typedef function<void(Node&, long, long)> Action;

struct Command{

    Action action;
    UINT  msg;
};

class CommandEXE{

public:
    CommandEXE(long wParam, long lParam)
                            : _wParam(wParam)
                            , _lParam(lParam){
            cout << "CommandEXE called with wParam, lParam" << endl;
    }

private:
    long _wParam;
    long _lParam;
};



Action DerivedAction(CommandEXE cmdexe){

    return [=] (Node& node, long wParam, long lParam){
		cmdexe(node, wParam, lParam);
	};
}

int main(){

    Action a = DerivedAction(CommandEXE(40, 50));

    return 0;
}

At last, the complie error info is:
D:\WinPro\LamdaTaste\main.cpp|82|error: no match for call to '(const CommandEXE) (Node&, long int&, long int&)'

[Peter87]

Not sure what you want cmdexe(node, wParam, lParam); to do. If you want this line to work you would have to overload operator() for CommandEXE (or change the type of cmdexe to something that does overload operator()).

[codewaggon]

Thank you very much. It does I make a mistake and I do understand.