std::string -> std::wstring

#include <vector>
#include <string>
#include <fstream>
#include <iterator>
std::vector<std::string> refs;

std::string file_name="Результат.txt";
std::ofstream ofs1(file_name.c_str());
if(ofs1)
   {
    std::ostream_iterator<std::string>b(ofs1,"\n");
    std::copy(refs.begin(),refs.end(),b);
    ofs1.close();
   }

#include <vector>
#include <string>
#include <fstream>
#include <iterator>
std::vector<std::wstring> refs;
std::string file_name="Результат.txt";
std::wofstream ofs1(file_name.c_str());
if(ofs1)
   {
    std::ostream_iterator<std::wstring>b(ofs1,"\n");
    std::copy(refs.begin(),refs.end(),b);
    ofs1.close();
   }

std::vector<std::wstring> refs;
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
std::string file_name="Результат.txt";
std::wofstream ofs1(file_name.c_str());
if(ofs1)
   {
    std::ostream_iterator<std::wstring>b(ofs1,"\n");// !!! Could not find a match for 'std::ostream_iterator<std::wstring,char,std::char_traits<char> >::ostream_iterator(std::wofstream,const wchar_t *)'
    std::copy(refs.begin(),refs.end(),b);
    ofs1.close();
   }
}
//---------------------------------------------------------------------------

std::ostream_iterator<std::wstring, wchar_t, std::char_traits<wchar_t>>

std::string file_name="Результат.txt";
std::wofstream ofs1(file_name.c_str());
if(ofs1)
   {
       //std::ostream_iterator<std::wstring>b(ofs1,"\n");
      std::ostream_iterator<std::wstring, wchar_t, std::char_traits<wchar_t> > b(ofs1,L"\n");
      std::copy(refs.begin(),refs.end(),b);
      ofs1.close();
   }
}