调用容器内对象成员函数

#include<boost/lexical_cast.hpp>
#include<vector>
using namespace std;
using namespace boost;
class Widget
{
string name;
public:
Widget(int x)
{
name=lexical_cast<string>(x);
}
~Widget()
{
}
void ShowValue()
{
cout<<name<<endl;
}
};
int main()
{
vector<Widget*> vec;
for (int i=100;i<200;i++)
{
vec.push_back(new Widget(i));
}
for_each(vec.begin(),vec.end(),mem_fun(&Widget::ShowValue));
return 0;
}