Re: Receiving events on a gdk window.

[Tristan Van Berkom <tvb gnome org>]

Michel Van den Bergh wrote:
> Hello,
>
> I am trying to write an xscreensaver using gtk (pygtk really). An 
> xscreensaver must draw on an
> externally supplied X window (either supplied on the command line or as 
> a virtual root).
> Can somebody explain to me how to make such an externally supplied 
> window react to exposure events?  I do know
> how to draw on them.

You should be able to get the GdkWindow with
 gdk_window_foreign_new ( xid );

> The gtk connect method seems to work only with widgets, not gdk windows.

I'm not sure if there's an easy way to catch events off of it,
you could write a widget for that and handle this stuff
in the realize method (i.e. widget->window = gdk_window_foreign_new())
with the gdk_window_set_user_data to point to the widget;
then my guess is that you can treat it like any other widget.

Cheers,
                      -Tristan