General :: Allow Users Of Program To Choose Filenames With Unicode Chars?

I'm working with an embedded Linux (Montavista 5.0). I want to allow users of my program to choose filenames with Unicode chars like the German All Unicode chars are visible inside the program (dialogs, buttons,...) and I can write Unicode chars into files and read them. But it is not possible for me to create a file with an Unicode filename! I can't write such Unicode chars in the shell! I set my locals to "de_DE.utf8". locale charmap says UTF-8! But when I try

Every Unicode char is writte to the shell in this way with a leading The same happens when I write such chars from my program to the shell with printf!