rem: D("on_checkbutton2_toggled");
context: on_checkbutton2_toggled (GtkToggleButton *togglebutton, gpointer user_data){                               	Totem *totem = (Totem *)user_data;	gboolean value;	D("on_checkbutton2_toggled");	value = gtk_toggle_button_get_active (togglebutton);	gconf_client_set_bool (totem->gc, GCONF_PREFIX"show_vfx",			value, NULL);}