Re: Find out if a widget or window is actually visible?

[Toralf Lund <toralf procaptura com>]

> > I suspect that you did not understand my original question. I want to
> > know if the user can actually see the widget, not just if it is
> > theoretically visible in the sense that it has been shown via show() and
> > not subsequently hidden via hide(). In other words, I'm looking for a
> > call that also returns "false" if for instance the widget is covered by
> > a different window.
> >     
>
> I have already explained that Gtk::Widget::is_visible() does this,
Nobody else seems to think so, though, based on the response here and 
the Gtk(mm) documentation. I even asked a couple Linux programs, and 
they said their impression had always been that is_visible() returns a 
flag that's set on show() and reset on hide(), and never touched by 
anyone else. Apparently, they have a cousin over in Win32 land that 
agrees with them, too.
>  and that 
> you can get greater information about whether a widget is fully or partially 
> obscured by connecting to the Gtk::Widget::signal_visibility_notify_event() 
> signal.
>
> If this does not work for you then you must be doing something wrong.
>   
It's a method with no input and a simple return value. I can probably 
find 10 or 15 ways of using that wrong. I call it creativity.

- Toralf