Konvertieren zwischen CString und std::string

Q: How to convert between 'CString' and 'std::string'?

A:

'CString' to 'std::string':

1CString cs("Hello");
2std::string s((LPCTSTR)cs);

'std::string' to 'CString':

1std::string s("Hello");
2CString cs(s.c_str());

std::string cannot always construct from a LPCTSTR i.e. the code will fail for UNICODE builds.

As std::string can construct only from LPSTR / LPCSTR, a programmer who uses VC++ 7.x or better can utilize conversion classes such as CT2CA as an intermediary.

Like this:

1CString cs ("Hello");
2
3// Convert a TCHAR string to a LPCSTR
4CT2CA pszConvertedAnsiString (cs);
5
6// construct a std::string using the LPCSTR input
7std::string strStd (pszConvertedAnsiString);