qt消除画图的锯齿painter->setRenderHints(QPainter::Antialiasing, true);版权声明：本文为a1725501402原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。原文链接：https://blog.csdn.net/a1725501402/article/details/104755843