Getting at widget toplevel parent...

[Ron Forrester <rjf zero-ping com>]

I would like to call gtk_object_set_data() on the root level window
after I create it, and then, from within callbacks for various widgets
(menu items, buttons, etc), get back that data.

Is there a way for me to get the toplevel windows data (without making
its variable global) from anywhere in a GTK app, i.e. via some
gtk_get_toplevel_window() call?

Thanks!
rjf&


P.S. The reason I am needing to do this is that currently, all my
widget stuff is in a structure, which I pass around as the data into
various signals. But I have come to need to get at that data, as well
as another distinct piece of data (which is transient, and cannot be
made part of the currently passed around struct).