Qt 第一次单击ListWidget的项是否会引发错误？

我想问你一个问题。当我第一次单击listwidget的项时，我看到应用程序输出中有一些文本行：

QPainter::begin: Paint device returned engine == 0, type: 3
QPainter::setWorldTransform: Painter not active
QPainter::worldTransform: Painter not active
QPainter::setWorldTransform: Painter not active
QPainter::setBrush: Painter not active
QPainter::setRenderHint: Painter must be active to set rendering hints
QPainter::setRenderHint: Painter must be active to set rendering hints
QPainter::setClipping: Painter not active, state will be reset by begin

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这是一个错误吗？如何在应用程序输出中隐藏/禁用这些文本行？

这些是QT的警告消息

您可能遇到图像原因类型==3的问题

看看这个