wprintf does write unicode strings to a console, the problem in your test is that it doesn't change the locale from the default "C" to russian, and the conversion from unicode to code page simply fails.
I'm attaching a modified version of your test, with some results/conclusions:
I failed to compile it under mingw32 nor winegcc as-is: con_test_dmitry.c:33:21: converting to execution character set: Invalid or incomplete multibyte or wide character con_test_dmitry.c:50:21: converting to execution character set: Invalid or incomplete multibyte or wide character
WriteConsole uses current console output code page to translate strings.
wine - yes. windows - no. See attach.
WriteConsole does produce an output when not redirecting output to a file.
Yes.
WriteConsole does not produce an output when redirecting output to a file, returns FALSE and sets last error to 6 (ERROR_INVALID_HANDLE).
Yes.
wprintf translates unicode strings to current CRT multibyte locale before printing them either to a console or to a file.
printf doesn't care about locale at all, it simply prints what it has.
I do not know much about msvcrt, but I can say, they suffer from the same bug as WriteConsole.
So, the patch sent by Jason is OK, except using wchar_t instead of WCHAR.
Yes, it is OK. I understood that a bit later...
I've slightly modified your test to make it compile under mingw32. The results under windows and wine are attached.
-- Kirill
P.S. I've appiled Jason's patch during tests.
