QWidget::paintEngine: Should no longer be called QPainter::begin: Paint device returned engine == 0
来源：互联网 发布：注册淘宝小号的技巧 编辑：程序博客网 时间：2024/06/05 12:11
在paintEvent函数外使用QPainter进行绘图时出现此错误，将绘图代码移入paintEvent中则正常运行。
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