How to convert a TCHAR array to std::string?

TCHAR is just a typedef that, depending on your compilation configuration, either defaults to char or wchar_t.

Standard Template Library supports both ASCII (with std::string) and wide character sets (with std::wstring). All you need to do is to typedef String as either std::string or std::wstring depending on your compilation configuration. To maintain flexibility you can use the following code:

#ifndef UNICODE    typedef std::string String; #else  typedef std::wstring String; #endif

Now you may use String in your code and let the compiler handle the nasty parts. String will now have constructors that lets you convert TCHAR to std::string or std::wstring.

TCHAR is either char or wchar_t, so a

typedef basic_string<TCHAR>   tstring;

is one way of doing it.

The other is to skip char altogether and just use std::wstring.

TCHAR type is char or wchar_t, depending on your project settings.

 #ifdef UNICODE     // TCHAR type is wchar_t #else     // TCHAR type is char #endif

So if you must use std::string instead of std::wstring, you should use a converter function. I may use wcstombs or WideCharToMultiByte.

TCHAR * text;#ifdef UNICODE    /*/    // Simple C    const size_t size = ( wcslen(text) + 1 ) * sizeof(wchar_t);    wcstombs(&buffer[0], text, size);    std::vector<char> buffer(size);    /*/    // Windows API (I would use this)    std::vector<char> buffer;    int size = WideCharToMultiByte(CP_UTF8, 0, text, -1, NULL, 0, NULL, NULL);    if (size > 0) {        buffer.resize(size);        WideCharToMultiByte(CP_UTF8, 0, text, -1, static_cast<BYTE*>(&buffer[0]), buffer.size(), NULL, NULL);    }    else {        // Error handling    }    //*/    std::string string(&buffer[0]);#else    std::string string(text);#endif