gtk and composing characters

[Jens Herden <jens khmeros info>]

Hi,

I have developed a keyboard for the X server and the Khmer language. It is 
working nice so far except an issue with the compose file. 
I had to use the compose file to generate two characters from one keystroke. 
This works in KDE and X but not in Gnome. I have found out that gtk does its 
own handling of character composing.

So what can I do that my custom compose rules find their way into gtk/Gnome? 

Any hint is welcome, thanks

Jens