//test.h

#include <string>

using namespace  std;

struct AA

{

    string a1;

    string a2;

    string a3;

};

class test

{

public:

    void ReadString(vector<AA> vv);

};

#include "StdAfx.h"

#include "test.h"

void test::ReadString(vector<AA> vv)

{

    vector<AA>::iterator it;

    for (it=vv.begin();it!=vv.end();++it)

    {

        string ss=it->a1;

    }

}

void CtttttttDlg::OnBnClickedButton1()

{

    // TODO: Add your control notification handler code here

   AA aa1;

   aa1.a1="aaaa11";

   aa1.a2="aaaa12";

   aa1.a3="aaa13";

   AA aa2;

   aa2.a1="aaaa21";

   aa2.a2="aaaa22";

   aa2.a3="aaa23";

   vector<AA> vv;

   vv.push_back(aa1);

   vv.push_back(aa2);

   /*vector<AA>::iterator it;

   for (it=vv.begin();it!=vv.end();++it)

   {

       string ss=it->a1;

   }

  */

   test ts;

   ts.ReadString(vv);

}