Martin v. Löwis wrote:
MultiByteToWideChar certainly works for Japanese code pages, such as 932 (Japanese Shift-JIS). It works for all code pages for which Microsoft has released a version of Windows, and that certainly includes Japanese.
Right, I think this was a misunderstanding. Yoshiki had already sent a screenshot that shows that he can display file names properly so we know that WideCharToMultiByte and back works (see http://lists.squeakfoundation.org/pipermail/squeak-dev/2007-June/117487.html). The problem appears to be on the IME input (which has no relation at all to those functions).
Cheers, - Andreas