I18n text input

[Russell Shaw]

Hi,
For functions XkbLookupKeySym(), XLookupString(), XKeycodeToKeysym(),
XKeysymToString etc, how can i tell if the keysym is a graphic printable
character like "a", or a control character such as "Left" (XK_Left) ?

I need to tell automatically if it's a normal unicode character that can be
printed in an entry box for any written language.

Do these functions return UTF-8 unicode?