void prefs_toolbar_register_plugin_item(ToolbarType toolbar_type, const gchar *plugin_name, const gchar *item_name, ToolbarPluginCallback cb, gpointer cb_data);
void prefs_toolbar_unregister_plugin_item(ToolbarType toolbar_type, const gchar *plugin_name, const gchar *item_name);
-void prefs_toolbar_execute_plugin_item(ToolbarType toolbar_type, const gchar *id);
+void prefs_toolbar_execute_plugin_item(gpointer parent, ToolbarType toolbar_type, const gchar *id);
#endif /* __PREFS_CUSTOM_TOOLBAR_H__ */