Mozilla selections question

Hi there,

I/We am/are creating an application to manage selections a.k.a.
clipboards. The application is called Gnome Clipboard Manager... yes it's
a Gtk+/Gnome application.

I have noticed that some applications like OpenOffice.org manage it to get
the HTML-data behind a selection that originates from Mozilla. So when I
select some marked up tekst in Mozilla, copy and then paste in
OpenOffice.org then OpenOffice.org will also paste some HTML-tags. It
(OpenOffice.org) does not yet give the text the correct formatting (like
Ms Office vs. Internet Explorer does) but I assume that in near future
this will too, be possible using an OpenOffice.org vs Mozilla combination?


However, we want to give the user the same feature in our
clipboard-manager.. so to retrive the HTML-text of a selection in Mozilla.
So my question, how do I do this? Is it just by changing the Atom from for
example CLIPBOARD or PRIMARY to a Mozilla-defined Atom and if so which
one? Or is it a more complex way? Is there documentation about this
subject? Or should I start exploring the sources of OpenOffice.org and
Mozilla :-\ ? I have already started searching in the sources of Mozilla
and found files like nsClipboard.cpp..

-- 
Philip van Hoof aka freax (http://www.freax.eu.org)
irc: irc.openprojects.net mailto:freax @ linux.be