说明：  QT的入门教程，适合初学者使用。对于大神级人物，就不用读了。谢谢各位支持哦，祝各位学者，学习进步，事业有成。愿计算机视觉都能给你我带来美好的明天。
(QT introductory tutorial for beginners. For large class people of God, do not read. Thank you for your support, oh, I wish you a scholar, academic progress, career. Is willing to give you my computer vision can bring a better tomorrow.)