Simple callbacks C++ OOP

#include <stdlib.h>
#include <stdio.h>
#include <vector>

class IDrawAction
{
public:

    IDrawAction() {}
    ~IDrawAction() {}

    virtual void draw() = 0;
};

class Drawer : public IDrawAction
{
    std::vector<IDrawAction *> drawable;

public:

    Drawer(){}
    ~Drawer() {}

    void draw()
    {
        for (const auto &I : drawable)
        {
            I->draw();
        }
    }

    void addDrawable(IDrawAction *ptr)
    {
        drawable.push_back(ptr);
    }
};

class SomeObject : public IDrawAction
{
public:
    SomeObject() {}
    ~SomeObject() {}

    void draw()
    {
        printf("wtf\n");
    }

};

int main()
{
    Drawer d;
    SomeObject obj;

    d.addDrawable(&obj);
    d.addDrawable(&obj);
    d.addDrawable(&obj);
    d.addDrawable(&obj);

    d.draw();

    getchar();

    return 0;
}