<para>The <seecref="M:GLib.Settings.WritableChanged"/> event utilizes this delegate:</para>
<para>Event data is passed via the <seecref="T:GLib.WritableChangedArgs"/> parameter.</para>
<para>To attach a <seecref="T:GLib.WritableChangedHandler"/> to an event, add the WritableChangedHandler instance to the event. The methods referenced by the WritableChangedHandler instance are invoked whenever the event is raised, until the WritableChangedHandler is removed from the event.</para>