evo/Gtk4-tutorial: GTK 4 tutorial for beginners

docs/sec1.html
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Toshio Sekiya
Update section 1-16. Some bugs are fixed.
21 дек 2022, 16:31
21 дек 2022, 16:31fe3fba6
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<h1 id="prerequisite-and-license">Prerequisite and License</h1>
<h2 id="prerequisite">Prerequisite</h2>
<h3 id="gtk-4-on-a-linux-os">GTK 4 on a Linux OS</h3>
<p>This tutorial is about GTK 4 libraries. It is originally used on
Linux with C compiler, but now it is used more widely, on Windows and
MacOS, with Vala, Python and so on. However, this tutorial describes
only <em>C programs on Linux</em>.</p>
<p>If you want to try the examples in the tutorial, you need:</p>
<ul>
<li>PC with Linux distribution like Ubuntu or Debian.</li>
<li>GCC.</li>
<li>GTK 4. The stable version of GTK is 4.8.2 at present (13/Dec/2022),
but older version (4.0 or higher) may work. See <a
href="sec3.html">Section 3</a> for the installation for GTK 4.</li>
</ul>
<h3 id="ruby-and-rake-for-making-the-document">Ruby and rake for making
the document</h3>
<p>This repository includes Ruby programs. They are used to make GFM
(GitHub Flavoured Markdown) files, HTML files, Latex files and a PDF
file.</p>
<p>You need:</p>
<ul>
<li>Linux.</li>
<li>Ruby programming language. There are two ways to install it. One is
installing the distribution’s package. The other is using rbenv and
ruby-build. If you want to use the latest version of ruby, use
rbenv.</li>
<li>Rake. You don’t need to install it separately because it is a
standard library of Ruby.</li>
</ul>
<h2 id="license">License</h2>
<p>Copyright (C) 2020-2022 ToshioCP (Toshio Sekiya)</p>
<p>GTK4-tutorial repository contains tutorial documents and programs
such as converters, generators and controllers. All of them make up the
‘GTK4-tutorial’ package. This package is simply called ‘GTK4-tutorial’
in the following description. ‘GTK4-tutorial’ is free; you can
redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation; either
version 3 of the License or, at your option, any later version.</p>
<p>‘GTK4-tutorial’ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the <a
href="https://www.gnu.org/licenses/gpl-3.0.html">GNU General Public
License</a> for more details.</p>
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