how to use addch with 8bit-characters (i.e German Umlaut 'ü')

[Felix Natter]

hi,

gtypist (http://www.gnu.org/software/gtypist/) reads characters one at a
time from a file and echos them. In another place reads characters one at a
time using getch, and echos them to the screen using addch.

But if I enter a German Umlaut (or any other 8bit-character), this results
in a blinking symbol (probably because addch interprets the 8th bit
as a blink bit ?)

how can I avoid this ?

*please cc any replies to address@hidden

thanks,

-- 
Felix Natter