Laptop Function key (KEY_FN) not recognized by XWindows

Hi All.

I am writing a Keyboard driver where the Function key (as seen in Laptop) is used as a modifier.
In my driver I have used "KEY_FN"(from include/linux/input.h) as the keycode for this key.

When I run "xev" the key press events do not get detected.
If I modify the keycode to say KEY_MEDIA, "xev" does show the event properly.

I am wondering how to go about getting this key detected and processed by XWindows.

Thanks and Regards
Rakesh
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