rem: checkbox_set_value ( GtkWidget * checkbox, guint * data, gboolean update )
add: void checkbox_set_value ( GtkWidget * checkbox, guint * data, gboolean update )
context: checkbox_set_value ( GtkWidget * checkbox, guint * data, gboolean update ){  if (data)    {      gulong hook_uid = gtk_object_get_data ( GTK_OBJECT(checkbox), "hook" );      if ( hook_uid >= 0 )	g_signal_handler_block ( checkbox, hook_uid);      g_signal_handler_block ( checkbox,			       gtk_object_get_data ( GTK_OBJECT(checkbox), 						     "set-boolean" ));      gtk_toggle_button_set_active ( GTK_TOGGLE_BUTTON ( checkbox ),				     *data );            if ( hook_uid >= 0 )	g_signal_handler_unblock ( checkbox, hook_uid );      g_signal_handler_unblock ( checkbox,				 gtk_object_get_data ( GTK_OBJECT(checkbox), 						       "set-boolean" ));    }  if (update)    gtk_object_set_data ( GTK_OBJECT ( checkbox ), "pointer", data);  return checkbox;}