知識點是看 陳皓大哥的部落格，程式碼也參考了他的，不過做了很小的改動。

#include "stdio.h"

class Base
{
public:
	virtual void Fun1()
	{
		printf("Call Base Fun1\n");
	}
	virtual void Fun2()
	{
		printf("Call Base Fun2\n");
	}
	virtual void Fun3()
	{
		printf("Call Base Fun3\n");
	}
private:
	virtual void Fun4()
	{
		printf("Call Base Fun4\n");
	}
};

class Derived : public Base
{
public:
	virtual void Fun1()
	{
		printf("Call Derived Fun1\n");
	}
	virtual void Fun5()
	{
		printf("Call Fun5\n");
	}
};

typedef void(*Fun)(void);

void main(void)
{
	Derived lDerived;

	int** lpVtableAdd = (int**)&lDerived;


	for (int i = 0; i< 5; ++i)
	{
		Fun lpFun = (Fun)(lpVtableAdd[0][i]);

		lpFun();
	}

	printf("First add of Base:%d, and first virtual Fun add:%d\n",(int*)(&lDerived),&lpVtableAdd);

}