EggTrayIcon: how to know if the systray area is available/visible to the user

[Saulius Menkevičius <bob nulis lt>]

Hello,

Don't know if its the right place to ask questions for experimental 
functionality in LibEGG, but maybe anyone knows if there any means to 
detect if system tray area is available (in GNOME/KDE environments).

I need this to check if I can hide the application window, so the user 
still has another mean to make popup the application window show up 
again (with a click on the systray icon).

I've skipped through the EggTrayicon.h but didn't seem to find any 
method/signal that would tell me if my icon is really visible to the 
user (thus, if theres no systray area, -- no icons are shown).

Thanks,
 -- Saulius Menkevičius, bob nulis lt