Sorry for such a stupid question ... shame on myself for asking it :-/ I looked arround GdkWindow.h/c bit and actually did not find the definition of the type "GdkWindow", instead I only found the definition of _GdkWindowObject which looks quite like I imagine GdkWindow could look like. So where/how does a GdkWindowObject become to an GdkWindow or do I understand some things completly wrong? btw. yes I did read some docs about Glib's object model ;) Thank you in advance, lg Clemens _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list