From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	ip-172-31-65-14.ec2.internal
X-Spam-Level: 
X-Spam-Status: No, score=-0.0 required=3.0 tests=BAYES_20,FREEMAIL_FROM,
	T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Received: by 2002:ad4:4bcb:0:b0:464:692c:6985 with SMTP id l11-20020ad44bcb000000b00464692c6985mr2758359qvw.48.1654053509640;
        Tue, 31 May 2022 20:18:29 -0700 (PDT)
X-Received: by 2002:a81:70f:0:b0:2fb:79b3:27a8 with SMTP id
 15-20020a81070f000000b002fb79b327a8mr67664636ywh.335.1654053509506; Tue, 31
 May 2022 20:18:29 -0700 (PDT)
Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!usenet.blueworldhosting.com!feed1.usenet.blueworldhosting.com!peer01.iad!feed-me.highwinds-media.com!news.highwinds-media.com!news-out.google.com!nntp.google.com!postnews.google.com!google-groups.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Tue, 31 May 2022 20:18:29 -0700 (PDT)
In-Reply-To: <t7342i$1set$1@gioia.aioe.org>
Injection-Info: google-groups.googlegroups.com; posting-host=73.121.127.66; posting-account=JSxOkAoAAADa00TJoz2WZ_46XrZCdXeS
NNTP-Posting-Host: 73.121.127.66
References: <fa06c2df-0b2b-4ddc-9534-b025df4d3f76n@googlegroups.com>
 <t71p94$obr$1@gioia.aioe.org> <ea3ce162-277d-487a-af19-8126892d2ef9n@googlegroups.com>
 <t7342i$1set$1@gioia.aioe.org>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <409bb984-2e7f-45e6-a5c1-7b637bec2c22n@googlegroups.com>
Subject: Re: GtkAda's "On_Edited"
From: John Perry <devotus@yahoo.com>
Injection-Date: Wed, 01 Jun 2022 03:18:29 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2072
Xref: reader02.eternal-september.org comp.lang.ada:63895
List-Id: <comp.lang.ada>

On Monday, May 30, 2022 at 1:57:30 PM UTC-5, Dmitry A. Kazakov wrote:
> > In the end I made it work with an On_* design...
> If that is OK to you, but in production code you need a lot of stuff to=
=20
> do in a handler, most of it is unrelated to the tree view.

I agree with what you write, and learned a bit. I've never been in a situat=
ion where I had to implement a TreeView-like object before, so I never had =
to think about it much. I probably won't pursue it since the project I'm wo=
rking on is a small, personal project with corresponding amounts of time av=
ailable.

> BTW, derived widgets is also a GtkAda feature, in GTK a derived widget=20
> require a lot of work. In GtkAda they are trivial.

Interesting! I'll probably look into this more at some future point.

thanks again
john perry