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From: Michael Brickenstein <bricken@rhrk.uni-kl.de>
To: "guile-gtk@sources.redhat.com" <guile-gtk@sources.redhat.com>
Subject: Bug in guile-gtk.c, procedure sgtk_build_args
Date: Tue, 19 Mar 2002 00:39:00 -0000
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Hello!
I 've found the following bug in gnome-guile-0.20, as I noticed, that 
expressions like

(gnome-canvas-item-new group 'GnomeCanvasLine 'points 
(gnome-canvas-points-from-coords #(0 0 500 500)))

fail with error-message:
no such arg for type `GnomeCanvasLine': points

The problem is:
sgtk_build_args tries to find out the 
if (args[i].type == GTK_TYPE_INVALID)
then error-message
But if this condition is true, this does not mean, that there is in fact an 
invalid argument, I found out; this sounds really ugly.
But:
First I found out GTK_TYPE_INVALID==0
secondly I looked at 
gnometypebuiltins_vars.c, as it is distributed in gnome-libs-1.4.1.4
There are many types, among them GTK_TYPE_GNOME_CANVAS_POINTS, set to 0, 
which is equal to GTK_TYPE_INVALID.
I am not very experienced with gnome and gtk, but this sounds to me either to 
be a bug in gnome-guile or in gnome-libs.


Yours sincerely
Michael Brickenstein