How does AltGr Work ?

[Laurent Marzullo]

Hello,
I've just install cygwin and XFree86 and got some problem for AltGr to work.
I've take an xmodmap file that work correctly on Solaris 8 (intel), named
belgian.map.
It's the belgian (french) layout. I've made a lot of change because of the
UK physical keyboard.
All the key work except all AltGr + key !
here some part of my belgian.map file:
...
clear shift
clear lock
clear control
clear mod1
clear mod2
clear mod3
clear mod4
clear mod5
...
!
! set up keys
!
! Key Unshifted Shifted AltGraph AltGraph-Shifted
! --- --------------- --------------- --------------- ----------------
keycode 9 = Escape
keycode 10 = ampersand 1 bar
keycode 11 = eacute 2 at
keycode 12 = quotedbl 3 numbersign
keycode 13 = apostrophe 4 braceleft
keycode 14 = parenleft 5 bracketleft
...
keycode 113 = Alt_R
...
add shift = Shift_L Shift_R
add lock = Caps_Lock
add control = Control_L Control_R
add mod1 = Alt_L
add mod2 = Alt_R
<<END>>
All character under AltGr column do not print when pressing AltGr + Key !
What should I do for AltGr + Key print the 3rd column (bar, at, numbersign
etc.) ?
Thank you very much.
Laurent Marzullo