看不懂的程序。。。帮忙解释下、谢谢

#include <iostream>

using namespace std;

class Base
{
public:
    virtual void VirtualFunction1() { cout << "Base::VirtualFunction1()" << endl; }
    virtual void VirtualFunction2() { cout << "Base::VirtualFunction2()" << endl; }
    void PlaneFunction() { cout << "Base::PlaneFunction()" << endl; }
    int Data1;
    int Data2;

    Base() : Data1(10), Data2(20){}
};

typedef void(*VFP)(void);      

int main()
{
    Base obj;

    int* p1 = (int*)*((int*)&obj+0)+0;
    int* p2 = (int*)*((int*)&obj+0)+1;

    VFP vfp1 = (VFP)*p1;
    VFP vfp2 = (VFP)*p2;

    printf("%p != %p\n", &Base::VirtualFunction1, vfp1);
    printf("%p != %p\n", &Base::VirtualFunction2, vfp2);
}

注释红色部分即可、、、