[gtkada] Heap corruption and other problems

[Chris Sparks]

I have been using GtkAda more to see if I can get something of what I 
had before running.  It seems that
my dependence on main_loops and a task router is not working, along with 
setting an Event_Handler.  So it
seems that I have make my own infinite loop and check for pending 
events.  Calling my event handler as
appropriate.  Cairo seems to be taking care of all the draw events but I 
have notice that my handler is
being called way too much and I think using Ada delays (I know it is not 
a desired approach) drops drawing
events.  More exploring to see if I can get past my sample program and 
to my real software.

chris
> 1. It seems that Gtk3 up to version 3.8 (Glib 2.36) has serious problem
> which corrupts Ada's memory pool sooner or later. The bug is sporadic and I
> cannot track it down, especially without building Glib from sources, which
> is a problem itself.
>
> 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.
>
> So far Gtk3 looks barely usable for any serious application. Sorry for all
> efforts AdaCore spent on GtkAda.
>