Re: [Boost-users] [date_time] UNICODE and wcout problems

From: Jeff Garland (jeff_at_[hidden])
Date: 2007-05-25 11:17:00

Filip Konvička wrote:
> Hi,
> 
> in MSVC 8.0 _UNICODE build, after I send a ptime to wcout, I can no 
> longer print "international" characters. When I use a temporary 
> wostringstream for printing the ptime, everything is OK. Minimal repro 
> see below (the "2" at the end is never printed). With some characters 
> like the "Å¡" in the example, the output is totally cut off; with others, 
> like "á", the codepage is changed, so the characters are displayed 
> incorrectly.
> 
> Any suggestions?
> 
> Thanks,
> Filip
> 
> // _UNICODE must be defined; the "2" is never printed.
> #include <string>
> #include <iostream>
> #include <sstream>
> #include <locale.h>
> 
> #include <boost/date_time/posix_time/posix_time.hpp>
> using boost::posix_time::ptime;
> using boost::date_time::not_a_date_time;
> 
> int main() {
>   wstring intl=L"\x161";
>   wostringstream ss;
>   ss << ptime(not_a_date_time);
>   wcout << ss.str() << endl;
>   wcout << intl << endl;
>   wcout << L"1" << endl;
>   wcout << ptime(not_a_date_time) << endl;
>   wcout << intl << endl;
>   wcout << L"2" << endl;
> }

No ideas.  I suspect this is a bad interaction between streams and terminal 
i/o...somehow the unicode output is making the subsequent data invisible or 
something.  You could change the characters used for not_a_date_time in the 
facet and see if that makes things better, but no telling when you'd run into 
this in some other context.

Jeff