I've seen that characters that need to be typed won't appear in X11 window (an event is generated but the character doesn't show).
I suppose this is a keyboard mapping issue, how can I solve it please ?
I am using xmodmap to set the correct keyboard mapping:
On debian you need to have the following packages installed:
Seems to work (I've got a xmodmap.fr tailored for Cygwin/X here http://www-user.tu-chemnitz.de/~goal/xfree/#modmap)
XEmacs barfs about modifiers so I'll try to create a custom xmodmap file asap.