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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="linkbutton.py" xml:lang="de">
<info>
<title type="text">LinkButton (Python)</title>
<link type="guide" xref="beginner.py#buttons"/>
<link type="next" xref="checkbutton.py"/>
<revision version="0.1" date="2012-05-23" status="draft"/>
<credit type="author copyright">
<name>Marta Maria Casetti</name>
<email its:translate="no">mmcasetti@gmail.com</email>
<years>2012</years>
</credit>
<desc>A button bound to an URL</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>LinkButton</title>
<media type="image" mime="image/png" src="media/linkbutton.png"/>
<p>A button that links to a web page.</p>
<links type="section"/>
<section id="code">
<title>Code used to generate this example</title>
<code mime="text/x-python" style="numbered">from gi.repository import Gtk
import sys
class MyWindow(Gtk.ApplicationWindow):
# a window
def __init__(self, app):
Gtk.Window.__init__(self, title="GNOME LinkButton", application=app)
self.set_default_size(250, 50)
# a linkbutton pointing to the given URI
button = Gtk.LinkButton(uri="http://live.gnome.org")
# with given text
button.set_label("Link to GNOME live!")
# add the button to the window
self.add(button)
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
</code>
</section>
<section id="methods">
<title>Useful methods for a LinkButton widget</title>
<list>
<item><p><code>get_visited()</code> returns the 'visited' state (<code>True</code> or <code>False</code>) of the URI where the LinkButton points. The button becomes visited when it is clicked.</p></item>
<item><p><code>set_visited(True)</code> sets the 'visited' state of the URI where the LinkButton points as <code>True</code> (analogously for <code>False</code>).</p></item>
<item><p>Each time the button is clicked, the signal <code>"activate-link"</code> is emitted. For an explanation of signals and callback functions, see <link xref="signals-callbacks.py"/>.</p></item>
</list>
</section>
<section id="references">
<title>API-Referenzen</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/GtkLinkButton.html">GtkLinkButton</link></p></item>
</list>
</section>
</page>
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