il me semble que ça ne requiert pas de modification très particulière, x11vnc semble pouvoir le faire:
‐id windowid
Show the X window corresponding to windowid not the entire dis‐
play. New windows like popup menus, transient toplevels, etc,
may not be seen or may be clipped. Disabling SaveUnders or
BackingStore in the X server may help show them. x11vnc may
crash if the window is initially partially obscured, changes
size, is iconified, etc. Some steps are taken to avoid this and
the ‐xrandr mechanism is used to track resizes. Use xwininfo(1)
to get the window id, or use "‐id pick" to have x11vnc run xwin‐
info(1) for you and extract the id. The ‐id option is useful
for exporting very simple applications (e.g. the current view on
a webcam).
[^] # Re: c'est quoi
Posté par zecrazytux . En réponse à la dépêche Nouvelle sortie Ulteo : « Open Virtual Desktop ». Évalué à 4.
‐id windowid
Show the X window corresponding to windowid not the entire dis‐
play. New windows like popup menus, transient toplevels, etc,
may not be seen or may be clipped. Disabling SaveUnders or
BackingStore in the X server may help show them. x11vnc may
crash if the window is initially partially obscured, changes
size, is iconified, etc. Some steps are taken to avoid this and
the ‐xrandr mechanism is used to track resizes. Use xwininfo(1)
to get the window id, or use "‐id pick" to have x11vnc run xwin‐
info(1) for you and extract the id. The ‐id option is useful
for exporting very simple applications (e.g. the current view on
a webcam).