Date: Fri, 17 Sep 2004 12:15:14 +0200 (CEST)
Message-Id: <20040917.121514.59468587.oandrieu at nerim.net>
To: garrigue at kurims.kyoto-u.ac.jp
Cc: lablgtk at kaba.or.jp
Subject: Re: (Q) How to store "pixbuf" into GTree.model?
From: Olivier Andrieu <andrieu at ijm.jussieu.fr>
In-Reply-To: <20040917.090542.59460509.garrigue at kurims.kyoto-u.ac.jp>
References: <20040914151922.733e64d0 at tintin.inria.fr>
	<20040914.160525.92586750.oandrieu@nerim.net>
	<20040917.090542.59460509.garrigue@kurims.kyoto-u.ac.jp>
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 > Jacques Garrigue [Fri, 17 Sep 2004]:
 > From: Olivier Andrieu <andrieu@ijm.jussieu.fr>
 > > Anyway, the GTree code needs some fixing : right now it converts the
 > > GTypes of the column list to fundamental types before creating the
 > > GtkListStore of GtkTreeStore. It's wrong, I don't know why it does
 > > this.
 > 
 > This is due to the fact columns are made from data_conv's, and
 > data_conv's only know fundamental types.

Ah yes, right.

 > GTK only checks the fundamental type of columns (accessing them
 > with g_value_get_{object,boxed,...}), so this information is
 > sufficient, at least for gobject's.

Not anymore, unfortunately. In GTK 2.6 there's a new widget,
GtkIconView, using a GtkTreeModel with a string and a GdkPixbuf column
and this widget wants a derived gtype for the pixbuf column (ie using
a GOBJECT column causes an error).

To work around this, I added a [`OTHER of g_type] variant in
Gobject.data_kind and a gobject_by_name data_conv

    val gobject_by_name : string -> 'a obj data_conv

(none of this is in the CVS yet)

Do you think that will do ?

-- 
   Olivier