RE: X crash when switching in full-screen mode

["Dos Santos, Oliveira" <dossantos ebu ch>]

Hi Yoann,

A Gtk::DrawingArea is used to draw something; The realize signal is used to map into the Gtk::DrawingArea 
some signal/action/event/data and instantiates it....

In your source code, I never see the signal_realize. So you should write something like that :

Gtk::DrawingArea * DA; 
DA->signal_realize().connect(sigc::mem_fun(*this, &GlDrawingArea::on_realize))


To set a DrawingArea in fullscreen, you must disable the main window decorations (the main window contains 
the DrawingArea), then maximize the window and set it as fullscreen.

set_decorated(!get_decorated());
(get_decorated()) ? unmaximize() : maximize();
(get_decorated()) ? unfullscreen() : fullscreen();


Marco Dos Santos Oliveira
EBU/European Broadcasting Union
Technology and Innovation Department


-----Original Message-----
From: gtkmm-list [mailto:gtkmm-list-bounces gnome org] On Behalf Of Yoann LE BARS
Sent: dimanche 24 février 2013 04:49
To: gtkmm-list gnome org
Subject: Re: X crash when switching in full-screen mode


Hello everybody out there!

        Well, I have made some progress. Attached to this message, a tarball with some code which actually 
can start in full-screen mode. But I cannot be certain there is no major flaw.

        Here is what I did, and why. It will be nice if someone can confirm I am not mistaken.

        After investigating the web, it seems a widget has to go through the following steps during its life:

                - creation;

                - property setting (which is usually made into constructor);

                - realizing (assigning back-end resources, e.g. an X Window);

                - mapping (make widget appearing on screen);

                - show (actually does the previous two steps);

                - unmapping (removing widget from screen);

                - hide (simple version of unmap);

                - destroying.

        I have put "show();" before asking for full-screen mode, and then the code became been able to start 
into full-screen mode. I have tried with just "realize();", but it was not enough to avoid X crashing. So it 
seems to me Gtk+ cannot set a widget into full-screen mode before having mapped it.

        My question is: did someone know if I get it well, or did I still missed something?

        Regards.

                                                        Yoann
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