// update progressbar, 1% for each call
static Eina_Bool progressbar_value_set(void *data) {
	Evas_Object *progressbar = data;
	double progress = elm_progressbar_value_get(progressbar);
	if (progress < 1.0) {
		progress += 0.01;
		elm_progressbar_value_set(progressbar, progress);
		return ECORE_CALLBACK_RENEW;
	}
	return ECORE_CALLBACK_CANCEL;
}


static void progressbar_test(appdata_s *ad) {
    
	// create a progressbar
	Evas_Object *progressbar = elm_progressbar_add(ad->win);
	evas_object_resize(progressbar, 200, 50);
	evas_object_move(progressbar, 100, 100);
	
	// set its style to a regular progressbar
	elm_object_style_set(progressbar, "progressbar");
	
	evas_object_show(progressbar);
	elm_progressbar_value_set(progressbar, 0);

	// add a timer to change progressbar values (demo)
	ecore_timer_add(0.1, progressbar_value_set, progressbar);
}