Called when the hidden state was toggled

toggled;

EFL_UI_PANEL_EVENT_TOGGLED(void)

static void
on_efl_ui_panel_event_toggled(void *data, const Efl_Event *event)
{
    void info = event->info;
    Eo *obj = event->object;
    Data *d = data;
 
    /* event hander code */
}
 
static void
setup_event_handler(Eo *obj, Data *d)
{
    efl_event_callback_add(obj, EFL_UI_PANEL_EVENT_TOGGLED, on_efl_ui_panel_event_toggled, d);
}