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<section id="coding-guidelines-for-supporting-accessibility">
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<h1>Coding Guidelines for Supporting Accessibility<a class="headerlink" href="#coding-guidelines-for-supporting-accessibility" title="Permalink to this headline">#</a></h1>
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<p>Here are some things you can do in your code to make your program work as well
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as possible with assistive technologies.</p>
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<ul>
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<li><p>For components that don’t display a short string (such as an image button),
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specify a name for it by setting the <code class="docutils literal notranslate"><span class="pre">GTK_ACCESSIBLE_PROPERTY_LABEL</span></code>. You
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might want to do this for image-only buttons, panels that provide logical
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groupings, text areas, and so on.</p></li>
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<li><p>If you can’t provide a tooltip for an UI element, use <code class="docutils literal notranslate"><span class="pre">GTK_ACCESSIBLE_PROPERTY_DESCRIPTION</span></code>
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||
instead to provide a description that assistive technologies can give the
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user. For example, to provide an accessible description for a Close button:</p>
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<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="n">gtk_accessible_update_property</span><span class="w"> </span><span class="p">(</span><span class="n">GTK_ACCESSIBLE</span><span class="w"> </span><span class="p">(</span><span class="n">button</span><span class="p">),</span><span class="w"></span>
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<span class="w"> </span><span class="n">GTK_ACCESSIBLE_PROPERTY_DESCRIPTION</span><span class="p">,</span><span class="w"></span>
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<span class="w"> </span><span class="n">_</span><span class="p">(</span><span class="s">"Closes the window"</span><span class="p">),</span><span class="w"></span>
|
||
<span class="w"> </span><span class="mi">-1</span><span class="p">);</span><span class="w"></span>
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||
</pre></div>
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</div>
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||
</li>
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||
<li><p>If several components form a logical group, try to put them in one container.</p></li>
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||
<li><p>Whenever you have a label that describes another component, use the
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||
<code class="docutils literal notranslate"><span class="pre">GTK_ACCESSIBLE_RELATION_LABELLED_BY</span></code> relation:</p>
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<div class="highlight-c notranslate"><div class="highlight"><pre><span></span><span class="n">gtk_accessible_update_relation</span><span class="w"> </span><span class="p">(</span><span class="n">GTK_ACCESSIBLE</span><span class="w"> </span><span class="p">(</span><span class="n">text_entry</span><span class="p">),</span><span class="w"></span>
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||
<span class="w"> </span><span class="n">GTK_ACCESSIBLE_RELATION_LABELLED_BY</span><span class="p">,</span><span class="w"></span>
|
||
<span class="w"> </span><span class="n">label</span><span class="p">,</span><span class="w"> </span><span class="nb">NULL</span><span class="p">,</span><span class="w"></span>
|
||
<span class="w"> </span><span class="mi">-1</span><span class="p">);</span><span class="w"></span>
|
||
</pre></div>
|
||
</div>
|
||
</li>
|
||
<li><p>If you create a custom widget, make sure it supports accessibility. Custom
|
||
components that are descendants of other GTK widgets should override
|
||
inherited accessibility information as necessary.</p></li>
|
||
<li><p>Don’t break what you get for free! If your application has an inaccessible
|
||
container, any components inside that container may become inaccessible.</p></li>
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</ul>
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<div class="title">Making Custom Components Accessible</div>
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