QWidget 调整大小信号? [英] QWidget resize signal?

问题描述

我想在调整小部件大小时采取行动.

I want to take an action when a widget was resized.

有没有办法在不安装该小部件上的事件过滤器的情况下捕获它(显然，没有子类化它)?AFAIK，QWidget 没有 resized 信号.

Is there a way to catch that without installing an event filter on that widget (and, obviously, without subclassing it)? AFAIK, QWidget does not have a resized signal.

推荐答案

如果您有任何其他 QObject 可以与该 QWidget 有严格关系，您可以使用 QObject::installEventFilter(QObject * filter)并重载bool eventFilter(QObject *, QEvent *).在 Qt 文档

If you have any other QObject that can have strict relation to that QWidget you may use QObject::installEventFilter(QObject * filter) and overload bool eventFilter(QObject *, QEvent *). See more at Qt docs

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