ATL / WTL / STL

#include <atlbase.h>
#include <atlconv.h>
#include <string>

void this_is_your_function()
{
   USES_CONVERSION;
   std::string s = "whatever";
   std::wstring ws = A2CW(s.c_str());
}

<br />
    //wstring to string<br />
    wstring w = L"This is a string";<br />
    string s;<br />
    copy (w.begin(), w.end(), back_inserter(s));<br />
<br />
    //string to wstring<br />
    string s1 = "This is another string";<br />
    wstring w1;<br />
    copy (s1.begin(), s1.end(), back_inserter(w1));<br />
<br />

<br />
int iTest = *objSetVt[2].find(7);<br />

<br />
set<int>::iterator it = objSetVt[0].find(7);<br />
if (it != objSetVt[0].end())<br />
	int iTest = *objSetVt[0].find(7);<br />

#include <iostream>
#include <string>

int main(int,char**)
{
   std::basic_string<unsigned long> ls;
   std::basic_string<unsigned long> ls2;

   ls.push_back('A');
   ls2 = ls;
   ls += ls2;
   ls += ls;
   ls += ls;


   std::cout << ls.length() << std::endl;
}