<?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="spinbutton.vala" lang="pt-BR">
  <info>
  <title type="text">SpinButton (Vala)</title>
    <link type="guide" xref="beginner.vala#entry"/>
    <link type="seealso" xref="label.vala"/>
    <link type="seealso" xref="grid.vala"/>
    <revision version="0.1" date="2012-05-07" status="draft"/>

    <credit type="author copyright">
      <name>Tiffany Antopolski</name>
      <email its:translate="no">tiffany.antopolski@gmail.com</email>
      <years>2012</years>
    </credit>

    <desc>Retrieve an integer or floating point number.</desc>
  <credit type="translator copyright"><name>Rafael Fontenelle</name><email>rafaelff@gnome.org</email><years>2013, 2018</years></credit></info>

  <title>SpinButton</title>
  <media type="image" mime="image/png" src="media/spinbutton.png"/>
    <p>Choose a number, by entering it or by clicking on the -/+ buttons!</p>

<code mime="text/x-csharp" style="numbered">/* This is the application. */
public class MyApplication : Gtk.Application {
	Gtk.Label label;

	/* Override the 'activate' signal of GLib.Application. */
	protected override void activate () {
		var window = new Gtk.ApplicationWindow (this);
		window.title = "SpinButton Example";
		window.set_default_size (210, 70);
		window.set_border_width (5);

		var spinbutton = new Gtk.SpinButton.with_range (0, 100, 1);
		spinbutton.set_hexpand (true);

		label = new Gtk.Label ("Choose a number");

		var grid = new Gtk.Grid ();
		grid.attach (spinbutton, 0, 0, 1, 1);
		grid.attach (label, 0, 1, 1, 1);

		spinbutton.value_changed.connect (this.value_changed_cb);

		window.add (grid);
		window.show_all ();
	}

	void value_changed_cb (Gtk.SpinButton spin) {
		label.set_text ("The number you selected is %.0f.".printf (spin.get_value()));
	}
}

/* main creates and runs the application. */
public int main (string[] args) {
	return new MyApplication ().run (args);
}
</code>
<p>
  In this sample we used the following:
</p>
<list>
  <item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.SpinButton.html">Gtk.SpinButton</link></p></item>
</list>
</page>
