xorg get windows visible stack (active, behind the active, behind again…)

[Giuseppe Penone]

Hi, thanks to the excellent wmctrl (http://tomas.styblo.name/wmctrl/) it
was easy for me to retrieve the C code needed to list the visible windows.

What I still need though is to obtain the information about what is the
active window, what is behind the active window, what behind again then...

Does anybody know if and how I can obtain this information?

Thanks.
Giuseppe.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.x.org/archives/xorg/attachments/20120618/66f9b209/attachment.html>