Looking for detailed documentation about event-handling

[Guido Schimmels <gushi arcor de>]

Hi,

I'm doing an experiment adding window-manager functionality into ROX- 
Filer. I'm starting from the Oroborus codebase and xfwm4+metacity for  
reference.
What I expected all along, the tricky part is joining the event-loops.  
First I looked at xfwm4, whose event-handling seems pretty awkward.  
Metacity more simple and straight-forward. Still looking at the code  
and the gtk-doc documentation for gtk+ I understand only half of what  
I'm seeing. I really need some more detailed documentation about  
Xevents and how they relate to gdk-events. And how gdk finally passes  
events to it's callbacks. E.g. why is it necessary to stack incoming  
events in my own ad-hoc implemented fifo-queue, which both xfwm4 and  
metacity seem to do. What's the background for having to complicate  
matters so much?
I hope I'm making at least a little sense. I've only just started on  
this, but don't want to spend too much time on trial-and-error.  
Therefore I'm asking here early on.

Guido Schimmels