Конвертация строк wstring -> LPTSTR

 std::vector<std::wstring> v;

(LPTSTR) ( getVectorElement(Index).c_str() );

const value_type *_Myptr() const
{ // determine current pointer to buffer for nonmutable string
return (this->_BUF_SIZE <= this->_Myres
? _STD addressof(*this->_Bx._Ptr)
: this->_Bx._Buf);
}

appendLogText((LPСТSTR) ( getVectorElement(Index).c_str() ));

void appendLogText(LPCTSTR newText)
    {
        int ndx = GetWindowTextLength(hEdit);
        SetFocus(hEdit);
#ifdef WIN32
        SendMessage(hEdit, EM_SETSEL, (WPARAM)ndx, (LPARAM)ndx);
#else
        SendMessage(hEdit, EM_SETSEL, 0, MAKELONG(ndx, ndx));
#endif
        SendMessage(hEdit, EM_REPLACESEL, 0, (LPARAM)((LPSTR)newText));
        SetWindowText((HWND)IDC_EDIT1, newText);
 
    }

(LPWSTR) ( getVectorElement(Index).c_str() );

// Convert a wide Unicode string to an UTF8 string
std::string utf8_encode(const std::wstring &wstr)
{
    if( wstr.empty() ) return std::string();
    int size_needed = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], (int)wstr.size(), NULL, 0, NULL, NULL);
    std::string strTo( size_needed, 0 );
    WideCharToMultiByte                  (CP_UTF8, 0, &wstr[0], (int)wstr.size(), &strTo[0], size_needed, NULL, NULL);
    return strTo;

Example: (No Error Checking for brevity)
 
 
LPWSTR pwszUserName; // Unicode user name
PSZ pszUserName; // User name which already points to multi-byte string
 
 
int nUserNameLenUnicode = lstrlenW( pwszUserName ); // Convert all UNICODE characters
int nUserNameLen = WideCharToMultiByte( CP_ACP, // ANSI Code Page
0, // No special handling of unmapped chars
pwszUserName, // wide-character string to be converted
nUserNameLenUnicode,
NULL, 0, // No output buffer since we are calculating length
NULL, NULL ); // Unrepresented char replacement - Use Default 
pszUserName = new char[ nUserNameLen ]; // nUserNameLen includes the NULL character
WideCharToMultiByte( CP_ACP, // ANSI Code Page
0, // No special handling of unmapped chars
pszUserName, // wide-character string to be converted
nUserNameLenUnicode,
pszUserName, 
nUserNameLen,
NULL, NULL ); // Unrepresented char replacement - Use Default