<?xml version='1.0' encoding='UTF-8'?>
<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>
