Re: compile error gtkextra-2

Hi Mike. I'm taking a look at those warnings. I can't reproduce them, 
though, but I get some warnings when I destroy the window. It's probably 
something trivial. I'm glad to hear that you are offering your diffs, 
please feel free to send them once you feel ready. Best regards, and 
thank you for all the help.
<ADRIAN>

Michael Noble wrote:

>>>The post above describes another issue with gtkplotcanvas.h.
>>>
>>Yes, I am now stuck at this one. Were you able to solve it? I am not a C programmer, allthough I was tought some C++ in the past...
>>
>
>Yes, add
>
>     void  (*add_item)            (GtkPlotCanvas *canvas,
>	                          GtkPlotCanvasChild *item);
>
>to the _GtkPlotCanvasClass struct definition within gtkplotcanvas.h.
>
>Now, as of about 2 weeks ago this (plus the earlier fix to the plot
>surface) was all I needed to do to get GtkExtra compiled from CVS.
>
>But, after your note yesterday I did another CVS extraction and
>encountered a third issue, this time in gtkplotgdk.c, at line 250:
>
>	GTK_OBJECT_CLASS(parent_class)->finalize(object);
>
>As of Gtk 2.0 GtkObject proper no longer contains a finalize member.
>It _is_ a member of GObject, from which GtkObject is "derived," and
>_was_ a member of GtkObject in Gtk 1.x, but the compiler is correct 
>to complain/fail at the cast being attempted above when compiled
>against Gtk 2.x.
>
>Changing the cast to 
>
>	G_OBJECT_CLASS(parent_class)->finalize(object);
>
>removes the compiler error but I can't vouch for it's correctness.
>Perhaps safer for now (i.e. until someone corrects CVS) is to just
>comment out the finalize call and accept whatever leaks might occur.
>
>Now, all that said, once I got the latest GtkExtra CVS to compile and
>ran the testgtkplot program, I was greeted with numerous warnings:
>
>   (lt-testgtkplot:31578): GLib-GObject-WARNING **: invalid unclassed
>   pointer in cast to `GtkObject'
>
>   (lt-testgtkplot:31578): Gtk-CRITICAL **: file gtkobject.c: line 745
>   (gtk_object_unref): assertion `GTK_IS_OBJECT (object)' failed
>
>   (lt-testgtkplot:31578): GLib-GObject-WARNING **: invalid cast from
>   `(null)' to `GtkObject'
>
>   (lt-testgtkplot:31578): Gtk-CRITICAL **: file gtkobject.c: line 745
>   (gtk_object_unref): assertion `GTK_IS_OBJECT (object)' failed
>
>So, GtkExtra seems a little unhealthy at present.
>
>Adrian, can you or anyone with CVS checkin privileges respond?  I've
>got almost a dozen modifications I'd like to offer, but was holding
>off to sync with CVS first before I sent in the diffs.
>
>Regards, Mike
>
>
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