How to prevent windows to be raised at the top of the stack when clicked?

["Olivier Guillion - Myriad" <olivier myriad-online com>]

Hi,

I'm struggling with this problem for several days now, and can't find any 
solution.

I'm writing an application for Ubuntu using GTK in C language.
This application manages various windows (floating palettes, documents, 
toolbars, etc), with a complex stacking (Z-order) strategy.
I would want to manage the stacking myself, by calling gtk_window_restack 
appropriately.

It works well, except for one thing : when a window is clicked, it seems to be 
automatically sent to front (top of the stack) by the system before my program 
receives any signal.
For instance, if I put a breakpoint in the "focus_in_event" or 
"button_press_event" signal callback, the window has already been sent to top 
before the breakpoint is reached.

Is there a way to prevent a clicked window from being automatically sent to top 
of the stack ? 
Any help would be greatly appreciated.

Thank you,
Olivier