gtk_signal_connect( GTK_OBJECT(sel->cancel_button), "clicked",
GTK_SIGNAL_FUNC(gtk_fontdialog_cancel_callback), (gpointer*)this );
gtk_signal_connect( GTK_OBJECT(sel->cancel_button), "clicked",
GTK_SIGNAL_FUNC(gtk_fontdialog_cancel_callback), (gpointer*)this );