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<title>Writing an applet in languages other than C: Panel Applet Reference Manual</title>
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<div class="titlepage"><div><div><h2 class="title">
<a name="getting-started.introspection"></a>Writing an applet in languages other than C</h2></div></div></div>
<p>
The Panel Applet library comes with support for
<a class="ulink" href="http://live.gnome.org/GObjectIntrospection" target="_top">GObject Introspection</a>.
This makes it possible to write applets in the languages that have
<a class="ulink" href="http://live.gnome.org/GObjectIntrospection/Users" target="_top">bindings based on GObject Introspection</a>.
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<p>
Here is a simple example of a python applet:
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<a name="id-1.3.9.3.1"></a><p class="title"><b>Example 4. Hello World applet, in Python</b></p>
<div class="example-contents"><pre class="programlisting">
from gi.repository import Gtk
from gi.repository import PanelApplet
def applet_fill(applet):
label = Gtk.Label("Hello World")
applet.add(label)
applet.show_all()
def applet_factory(applet, iid, data):
if iid != "HelloWorldApplet":
return False
applet_fill(applet)
return True
PanelApplet.Applet.factory_main("HelloWorldFactory",
PanelApplet.Applet.__gtype__,
applet_factory, None)
</pre></div>
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<p><br class="example-break">
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<p>
The only limitation of writing an applet in a language other than C is that the applet will
not be able to run in the panel process: it will have to stay out-of-process. However, since
it is recommended to leave applets out-of-process, this limitation is mitigated.
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