WhyCan Forum(哇酷开发者社区)

static void button_event_cb(lv_obj_t * slider, lv_event_t e);

static lv_obj_t *button2, *button3;

	button2 = lv_btn_create(h, NULL);
	lv_obj_set_event_cb(button2, button_event_cb);
	lv_obj_t* label2 = lv_label_create(button2, NULL);
	lv_label_set_text(label2, "红色主题");

	button3 = lv_btn_create(h, NULL);
	lv_obj_set_event_cb(button3, button_event_cb);
	lv_obj_t* label3 = lv_label_create(button3, NULL);
	lv_label_set_text(label3, "绿色主题");

static void button_event_cb(lv_obj_t * button, lv_event_t e)
{
	if (e == LV_EVENT_RELEASED)
	{
		if (button2 == button)
		{
			lv_theme_t * theme = LV_THEME_DEFAULT_INIT(LV_COLOR_RED,
				LV_THEME_DEFAULT_COLOR_SECONDARY,
				LV_THEME_DEFAULT_FLAG,
				LV_THEME_DEFAULT_FONT_SMALL,
				&myFont,
				LV_THEME_DEFAULT_FONT_SUBTITLE,
				LV_THEME_DEFAULT_FONT_TITLE);

			lv_theme_set_act(theme);
		}
		else if (button3 == button)
		{
			lv_theme_t * theme = LV_THEME_DEFAULT_INIT(LV_COLOR_GREEN,
				LV_THEME_DEFAULT_COLOR_SECONDARY,
				LV_THEME_DEFAULT_FLAG,
				LV_THEME_DEFAULT_FONT_SMALL,
				&myFont,
				LV_THEME_DEFAULT_FONT_SUBTITLE,
				LV_THEME_DEFAULT_FONT_TITLE);

			lv_theme_set_act(theme);
		}

	}
}