Question

关于MFC编程的Ondraw()函数下的问题~~~

\\虚基类执行顺序~~~~表示搞不懂~~
#include <iostream>
using namespace std;
class base1
{
public:
base1(){cout<<"class base1"<<endl;}
};
class base2
{
public:
base2(){cout<<"class base2"<<endl;}
};
class level1: public base1,public base2
{
public:
level1(){cout<<"class level1"<<endl;}
};
class level2:virtual public base1,public base2
{
public:
level2(){cout<<"class level2"<<endl;}
};
class leaf:virtual public base2,public base1
{
public:
leaf(){cout<<"class leaf"<<endl;}
};
int main()
{
level1 ohmygod;
return 0;
}

完全不懂运行顺序~~~ 虚基类本来就不太懂~~~ 求教育呀~

Answer 1

虚基类，顾名思义，虚的 不是这个类的，在其他类中定义的
使用的时候继承类中需要重新构造才能使用

Answer 2

把程序编译一下不就什么都知道了