类的数据成员指针和成员函数指针

#include

#include

using namespace std;

class Screen{

public:

// typedef std::string::size_type index;

typedef Screen& (Screen::*ActionF)();//函数指针

static ActionF Menu[];//函数指针表

Screen& home();

Screen& forward();

//private:

// std::string contents;

// index cursor;

// index height,width;

enum Directions{HOME,FORWARD};

Screen& move(Directions);

};

Screen::ActionF Screen::Menu[]={Screen::home,Screen::forward};

Screen& Screen::home()

{

cout<<"home\n";

return *this;

}

Screen& Screen::forward()

{

cout<<"forward\n";

return *this;

}

Screen& Screen::move(Directions cm)

{

(this->*Menu[cm])();

return *this;

}

int main()

{

Screen sc;

sc.move(Screen::HOME);

return 1;

}