>> Does Gtkmm/Gdkmm offer a nice and simple way to find out if a widget or
>> window is actually visible to the user, i.e. is mapped *and not obscured
>> by another window*? I mean, .e.g Gdk::Window::is_viewable () and
>> Gdk::Window::is_visible ()/Gtk::Widget::is_visible() will answer only
>> first half of that question, I believe, i.e. they will tell me whether
>> the window/widget is mapped, but not check if it is covered by something
>> else.
>>
>> - Toralf
>>
>
> Hi,
>
> I am not sure if it about GTKmm at all. The system manages windows 
> that represent a space for different applications. Each application 
> can be written using it's own GUI framework: GTKmm, Qt, Tkinter, and 
> so on. Thus maybe your question should be addressed to a "guy" that is 
> responsible for sending a sort of "REDRAW_WINDOW" signal whenever it 
> is needed and a part of window becomes visible. I guess that should be 
> some kind of System GUI Manager that is definitely different in Linux, 
> Windows, Mac OS X, etc. Therefor the "guy" you are looking is System.
No, I don't think so. By that argument, Gdk::Window should never be 
used. Or even be there in the first place. No, wait, you can make that 
all of Gdk. And add the event handling infrastructure in Gtk. 'Cause the 
job is done by the back-end GUI libs or windowing system, really...
But isn't one of the prime features of Gtk actually that it allows you 
to interact with windows without having to worry about system details or 
platform differences? It's a cross-platform toolkit, you see...

- Toralf


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