Thread: using more about macros

the question is more geral.
because i need create 1 macro that i don't know how, but i belive that it's possible...
but for understand what i need, heres a sample:

Code:

class test
{
    public:
          void test2(); //it's a prototype
};

classwithprototypes(test, testbase);//classwithprototypes it's the new macro

so the classwithprototypes macro must convert the code to:

Code:

class testbase:public test
{
    public:
          void test2(); //ok... here we use 1 function.. but imagine with 2 or more
};

so the best question for start would be: how can i get the functions prototypes using macros?

heres my actual code:

Code:

#include <iostream>class a
{
    public:
    int b;
    void hello(); //adding these on macro
};


#define ClassWithEvents(DerivedClass,InstanceName) \
                class InstanceName : public DerivedClass {}InstanceName;


ClassWithEvents(a, c);
ClassWithEvents(a, d);
using namespace std;
int main()
{
    c.b=10;
    d.b=20;
    cout << c.b << d.b;
    return 0;
}

see the class 'a':

Code:

class a{
    public:
    int b;
    void hello(); //adding these on macro
};

and now see the macro:

Code:

#define ClassWithEvents(DerivedClass,InstanceName) \
                class InstanceName : public DerivedClass {}InstanceName;

using macros, how can i add the functions prototype between blocks\breaks?

Also posted here.

heres my actual code:

Code:

#include <iostream>

//create the class, from base class and the functions prototype, that don't need instances
//the '...' and '__VA_ARGS__' is for constructor parameters:
#define ClassWithEvents(DerivedClass, MacroEventsUsed, InstanceName, ...) \
                class InstanceName : public DerivedClass {public: InstanceName():DerivedClass(__VA_ARGS__){;} \
                ~InstanceName(){;}  MacroEventsUsed}InstanceName;


//macro that have the function prototypes:
#define FormEvents public: void MouseClick(); void Move();


//heres an entire sample:
class test
{
    public:
        int inttest=0;
    test()
    {
        MouseClick();
        Move();
    }
    virtual void MouseClick(){} ;
    virtual void Move(){};
};


//creating an 'instance':
ClassWithEvents(test,FormEvents, b);//yes i can create anothers like 'b'


//define the functions prototype:
void b::MouseClick()
{
    std::cout << "Mouse click";
}


//but don't need to be all prototype functions:
/*void b::Move()
{
   std::cout << "Move";
}*/


int main()
{
    b.inttest=100;
    b.MouseClick();
    std::cout << b.inttest;
    std::cin.get();
    return 0;
}

the Move() isn't defined, so i have 2 errors:
1 - "obj\Debug\testingevents.o:testingevents.cpp.rdata$_ZTV1b[__ZTV1b]+0xc)||undefined reference to `b::Move()'|"
2 - ||error: ld returned 1 exit status|

how can i fix these error?
what i need is the FormEvents macro been universal and then just define what i need. how can i do it?