<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.vala" xml:lang="de">

  <info>

  <title type="text">RadioButton (Vala)</title>

    <link type="guide" xref="beginner.vala#buttons"/>

    <link type="seealso" xref="togglebutton.vala"/>

    <link type="seealso" xref="grid.vala"/>

    <revision version="0.1" date="2012-05-09" status="draft"/>

    <credit type="author copyright">

      <name>Tiffany Antopolski</name>

      <email its:translate="no">tiffany.antopolski@gmail.com</email>

      <years>2012</years>

    </credit>

    <desc>A choice from multiple CheckButtons.</desc>

    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">

      <mal:name>Mario Blättermann</mal:name>

      <mal:email>mario.blaettermann@gmail.com</mal:email>

      <mal:years>2011, 2013</mal:years>

    </mal:credit>

  </info>

  <title>Auswahlknopf</title>

  <media type="image" mime="image/png" src="media/radiobutton.png"/>

  
These RadioButtons report their activity in the terminal.

public class MyWindow : Gtk.ApplicationWindow {

	internal MyWindow (MyApplication app) {

		Object (application: app, title: "RadioButton Example");

		this.border_width = 20;

		this.set_default_size (250, 100);

		/* We demonstrate 3 different RadioButton creation methods */

		//Create a Radio Button

		var button1 = new Gtk.RadioButton (null);

		button1.set_label ("Button 1");

		//Create a RadioButton with a label, and add it to the same group as button1.

		var button2 = new Gtk.RadioButton.with_label (button1.get_group(),"Button 2");

		//Create a RadioButton with a label, adding it to button1's group.

		var button3 = new Gtk.RadioButton.with_label_from_widget (button1, "Button 3");

		//Attach the buttons to a grid.

		var grid = new Gtk.Grid ();

		grid.attach (button1, 0, 0, 1, 1);

		grid.attach (button2, 0, 1, 1, 1);

		grid.attach (button3, 0, 2, 1, 1);

		//Add the button to the window.

		this.add (grid);

		//Connect the signal handlers (aka. callback functions) to the buttons.

		button1.toggled.connect (button_toggled_cb);

		button2.toggled.connect (button_toggled_cb);

		button3.toggled.connect (button_toggled_cb);

	}

	void button_toggled_cb (Gtk.ToggleButton button)

	{

		var state = "unknown";

		if (button.get_active ())

			state = "on";

		else {

			state = "off";

			print ("\n");

		}

		print (button.get_label() + " was turned " + state + "\n");

	}

}

public class MyApplication : Gtk.Application {

	protected override void activate () {

		//Show all of the things.

		new MyWindow (this).show_all ();

	}

	internal MyApplication () {

		Object (application_id: "org.example.MyApplication");

	}

}

public int main (string[] args) {

	return new MyApplication ().run (args);

}

  In this sample we used the following:

<list>

  <item>
<link href="http://www.valadoc.org/gtk+-3.0/Gtk.RadioButton.html">Gtk.RadioButton</link>
</item>

</list>

</page>