From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	ip-172-31-74-118.ec2.internal
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.6
Path: eternal-september.org!reader02.eternal-september.org!aioe.org!v8j8diosp9R6yoS0SZP34g.user.46.165.242.91.POSTED!not-for-mail
From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Gtk.Image.Gtk_Image
Date: Thu, 24 Mar 2022 14:35:29 +0100
Organization: Aioe.org NNTP Server
Message-ID: <t1hs30$s7j$1@gioia.aioe.org>
References: <fantome.forums.tDeContes-0254C7.13550424032022@news.free.fr>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Info: gioia.aioe.org; logging-data="28915"; posting-host="v8j8diosp9R6yoS0SZP34g.user.gioia.aioe.org"; mail-complaints-to="abuse@aioe.org";
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101
 Thunderbird/91.7.0
X-Notice: Filtered by postfilter v. 0.9.2
Content-Language: en-US
Xref: reader02.eternal-september.org comp.lang.ada:63623
List-Id: <comp.lang.ada>

On 2022-03-24 13:55, Thomas wrote:

> To display images, I had a Gtk.Pixmap.Gtk_Pixmap in a
> Gtk.Event_Box.Gtk_Event_Box.
> 
> Since Gtk.Pixmap is obsolescent, I try to replace it by
> Gtk.Image.Gtk_Image.
> 
> 
> When I replace Gtk.Pixmap.Gtk_Pixmap by Gtk.Image.Gtk_Image, it doesn't
> work.
> 
> Why? What's specific to Gtk_Pixmap or Gtk_Image so it has not the same
> behavior in Gtk_Event_Box?
> 
> 
> When I replace Gtk.Event_Box.Gtk_Event_Box by Gtk.Image.Gtk_Image, it
> works fine, except the replacement by an other image.
> (I try it using Gtk.Image.Get and Gtk.Image.Set, but it doesn't work.)
> 
> Is there an other container, that I should use instead of
> Gtk.Event_Box.Gtk_Event_Box that would work and that I should use
> to replace the image inside?

I don't know what are you trying to achieve. If you want to change a 
child of a container, remove the old child and add a new one.

Another method of doing "animation" through a set of images is by using 
a Gtk_Box. Add all images to the box use Hide on all of them and Show on 
the one show.

If you want drawing use Gtk_Drawing_Area, Cairo and event "draw" 
handler. Use Gdk_Pixbuf for drawing a whole image.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de