[ Thanks to j00p34 for this link.
]
“It took me a lot of searching on the internet before I
found a reasonably easy way to do this. The point is (or seems to
be, I’m not an expert) that when I want to draw something to the
Desktop with Gtk2 I always need to create a window (A square shaped
window). I found out it’s pretty easy to set the window decoration
to false which provides me with a window consisting of a background
alone. What I wanted though was some kind of invisible canvas on
which I can draw an animation.”