ou add a separator line above the buttons, there shall be a
marginHint() between the buttons and the separator and a
marginHint() above the separator as well.
</p>
<p>
<b>Example:</b>\n
</p>
<p>
<pre class="fragment">
   KDialog *dialog = new KDialog( this );
   dialog-&gt;setCaption( "My title" );
   dialog-&gt;setButtons( KDialog.Ok | KDialog.Cancel | KDialog.Apply );

   FooWidget *widget = new FooWidget( dialog );
   dialog-&gt;setMainWidget( widget );
   connect( dialog, SIGNAL( applyClicked() ), widge