[C/C++] MFC / CString과 std::string 타입 변환

1. CString ▶ std::string

CString str = "hello";
std::string stdStr = str.GetBuffer(0);

2. std::string ▶ CString

std::string stdStr = "hello";
CString str  = stdStr.c_str();

또는

CString str("Hello");
// Convert a TCHAR string to a LPCSTR
CT2CA pszConvertedAnsiString(str);
// Construct a std::string using the LPCSTR input
std::string s(pszConvertedAnsiString);