How can I convert an Int to a CString?

Question

I can convert a Double to a CString using _ecvt

result_str=_ecvt(int,15,&decimal,&sign);

So, is there a method like the one above that converts an int to CString?

Mycah

Note: The cstring tag is for the standard C++ header cstring, not for Microsofts string thing. – Galling

Maybe itoa is what you are looking for? – Baker

Answer 1

Here's one way:

CString str;
str.Format("%d", 5);

In your case, try _T("%d") or L"%d" rather than "%d"

Zellner

Can't do it much faster than that. You may want to wrap the string with the _T macro to match the LPCTSTR parameter type. – Highstepper

@Eslam How specifically did it not work? Didn't compile? Runtime error? Wrong result? – Highstepper

@Daniel, the following error arises error C2664: 'void ATL::CStringT<BaseType,StringTraits>::Format(const wchar_t *,...)' : cannot convert parameter 1 from 'const char [3]' to 'const wchar_t *' – Mycah

@Eslam Try _T("%d") or L"%d" rather than "%d". – Highstepper

It is not working for me! I am getting error 'cannot convert argument 1 from 'const char [3]' to 'const unsigned short *'. Weird. – Luther

Answer 2

If you want something more similar to your example try _itot_s. On Microsoft compilers _itot_s points to _itoa_s or _itow_s depending on your Unicode setting:

CString str;
_itot_s( 15, str.GetBufferSetLength( 40 ), 40, 10 );
str.ReleaseBuffer();

it should be slightly faster since it doesn't need to parse an input format.

Routine

Answer 3

template <typename Type>
CString ToCString (Type value)
    {
    return std::to_wstring (value).data ();
    }

int main ()
    {
    const auto msg = ToCString (10);
    std::wcout << msg.GetString () << std::endl;

    return 0;
    }

Commeasure

Answer 4

CString(std::to_string(123).c_str())

Belak