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<page xmlns="http://projectmallard.org/1.0/"
xmlns:its="http://www.w3.org/2005/11/its"
xmlns:xi="http://www.w3.org/2001/XInclude"
type="guide" style="task"
id="radiobutton.py">
<info>
<title type="text">RadioButton (Python)</title>
<link type="guide" xref="beginner.py#buttons"/>
<link type="seealso" xref="grid.py"/>
<link type="next" xref="buttonbox.py"/>
<revision version="0.1" date="2012-05-09" status="draft"/>
<credit type="author copyright">
<name>Marta Maria Casetti</name>
<email its:translate="no">mmcasetti@gmail.com</email>
<years>2012</years>
</credit>
<desc>Mutually exclusive buttons.</desc>
</info>
<title>RadioButton</title>
<media type="image" mime="image/png" src="media/radiobutton.png"/>
<p>Three RadioButtons. You can see in the terminal if they are turned off or on.</p>
<links type="section" />
<section id="code">
<title>Code used to generate this example</title>
<code mime="text/x-python" style="numbered"><xi:include href="samples/radiobutton.py" parse="text"><xi:fallback/></xi:include></code>
</section>
<section id="methods">
<title>Useful methods for a RadioButton widget</title>
<p>In line 16 the signal <code>"toggled"</code> is connected to the callback function <code>toggled_cb()</code> using <code><var>widget</var>.connect(<var>signal</var>, <var>callback function</var>)</code>. See <link xref="signals-callbacks.py"/> for a more detailed explanation.</p>
<p>As seen in <link xref="properties.py"/>, instead of <code>button1 = Gtk.RadioButton(label="Button 1")</code> we could create the button and label it with</p>
<code>
button1 = Gtk.RadioButton()
button1.set_label("Button 1").</code>
<p>Yet another way to create a new RadioButton with a label is <code>button1 = Gtk.RadioButton.new_with_label(None, "Button 1")</code> (the first argument is the group of the radiobuttons, which we can get with <code>get_group()</code>, the second argument is the label).</p>
</section>
<section id="references">
<title>API References</title>
<p>In this sample we used the following:</p>
<list>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkWindow.html">GtkWindow</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkGrid.html">GtkGrid</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/unstable/GtkRadioButton.html">GtkRadioButton</link></p></item>
</list>
</section>
</page>
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