Fullscreen window

[Gabriele Greco <gabriele greco darts it>]

I'd like to open my application with the window "expanded", so that it 
covers all the visible part of the desktop except the kde/gnome/windows 
taskbar(s).

There is a portable way to do this?

gtk_window_fullscreen does something similar but "removes" both the 
titlebar and the taskbar, at least on win32, on linux it doesn't do 
nothing but this is maybe dued to the fact I'm using a remote display 
for the application.

Bye,
 Gabry