Well... I have a feeling that Unicode support will only happen if you're using the vc compile environment.
I finally found what's wrong with Unicode
Mingw can compile unicode
makefile (original)
# Inluclude Unicode support
# UNICODE = 1
# Inluclude Unicode support
UNICODE = 1
with the lib file libunicows.a
Maybe you discovered that before, but I'm really happy to be able, now, to compile with unicode support ^^