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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.vala" xml:lang="gl">
<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>Fran Dieguez</mal:name>
<mal:email>frandieguez@gnome.org</mal:email>
<mal:years>2012-2013.</mal:years>
</mal:credit>
</info>
<title>RadioButton</title>
<media type="image" mime="image/png" src="media/radiobutton.png"/>
<p>These RadioButtons report their activity in the terminal.</p>
<code mime="text/x-csharp" style="numbered">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);
}
</code>
<p>Neste exemplo empregaremos o seguinte:</p>
<list>
<item><p><link href="http://www.valadoc.org/gtk+-3.0/Gtk.RadioButton.html">Gtk.RadioButton</link></p></item>
</list>
</page>
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