#include <sstream>
int => std::string;
int nValue = 22;
std::ostringstream stom;
stom<<nValue;
std::string strTemp = stom.str();
CString => std::string;
CString strValue = _T("aaa");
CT2CA pszca(strValue)
std::string strStringTemp(pszca);
std::string => CString;
std::string strData;
CString strTemp = CString(strData.c_str());