+
+// initialize protocol and panel position
+void init_systray();
+void init_systray_panel(void *p);
+
+void draw_systray(void *obj, cairo_t *c);
+int resize_systray(void *obj);
+void on_change_systray(void *obj);
+
+
+// systray protocol
+// many tray icon doesn't manage stop/restart of the systray manager
+void start_net();
+void stop_net();