下皆来自qt官方文档：

void QWidget::paintEvent(QPaintEvent *event)

This event handler can be reimplemented in a subclass to receive paint events passed in event.

A paint event is a request to repaint all or part of a widget. It can happen for one of the following reasons:

• repaint() or update() was invoked,

• the widget was obscured and has now been uncovered, or

• many other reasons.（好评在此粗！）

总结

以上是生活随笔为你收集整理的Qt文档趣事的全部内容，希望文章能够帮你解决所遇到的问题。

如果觉得生活随笔网站内容还不错，欢迎将生活随笔推荐给好友。