[gtkada] Heap corruption and other problems

[Pascal]

Hello Dmitry,

I’ve just tried your simple example with GTKAda GPL 2013 (GTK Ada 3.4.2 with GTK+ 3.4.1) on MacOS 10.9 with no errors :
$ ./simple 


Have you still issues?

Regards, Pascal.
http://blady.pagesperso-orange.fr


Le 12 août 2013 à 10:36, Dmitry A. Kazakov <mailbox at dmitry-kazakov.de> a écrit :

> On Mon, 12 Aug 2013 09:37:45 +0200, you wrote:
> 
8<…>8
>>> 2. Another serious problem is in GDK which shows itself as:
>>> 
>>>  Gdk-CRITICAL **: gdk_device_get_source: assertion `GDK_IS_DEVICE
>>> (device)' failed
>>> 
>>> on many occasions. E.g. in combo boxes after resizing them.
>> 
>> We have seen that one at some point, but it is gone in the development
>> versions now.
> 
> Create a window with combo box in it:
> 
> with Gtk.Box;             use Gtk.Box;
> with Gtk.Main;
> with Gtk.Window;          use Gtk.Window;
> with Gtk.Combo_Box_Text;  use Gtk.Combo_Box_Text;
> 
> procedure Simple is
>   Window : Gtk_Window;
>   Combo  : Gtk_Combo_Box_Text;
>   Box    : Gtk_VBox;
> 
> begin
>   Gtk.Main.Init;
>   Gtk_New (Window);
> 
>   Gtk_New_VBox (Box);
>   Window.Add (Box);
>   Window.Set_Title ("Test");
>   Gtk_New (Combo);
>   Box.Pack_Start (Combo, False, False);
>   Combo.Append_Text ("A");
>   Combo.Append_Text ("B");
>   Combo.Append_Text ("C");
> 
>   Window.Show_All;
> 
>   Gtk.Main.Main;
> end Simple;
> 
> Start program. Resize window so that combo box resizes. Select something in
> the box. Done.
> 
>> I think it is part of our own patches to gtk+, did you apply these ?
>> They are in the contrib/ directory (of course, that's in case you recompile your
>> own gtk+, I don't remember what system you are working on).
> 
> I don't know how to do it under MinGW. The Gtk I am using I took from
> mingw32 Fedora packages (Gtk 3.8.2). I simply copied /bin /lib etc and
> changed Path environment variable. That resolved some issues, e.g.
> GtkColorButton crash.
> 
>>> So far Gtk3 looks barely usable for any serious application. Sorry for all
>>> efforts AdaCore spent on GtkAda.
>> 
>> We do use it very successfully for the upcoming version of GPS in fact. The
>> transition is indeed somewhat painful, but then things seem to work as expected
>> for us. Of course, we may have made progress or fixes since the last GPL release.
> 
> I hope you are right. The problem is difficult is reproduce. In my
> application I need a lot of clicking (creating and removing widgets) for
> the problem to show. Which suggests a race condition somewhere.
> 
> -- 
> Regards,
> Dmitry A. Kazakov
> http://www.dmitry-kazakov.de
> _______________________________________________
> gtkada mailing list
> gtkada at lists.adacore.com
> http://lists.adacore.com/mailman/listinfo/gtkada

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