本文介绍了获取QGraphicsView的大小的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想知道某个 QGraphicsView 的大小。它的大小不是固定的，因为窗口小部件是网格布局的一部分。我尝试使用 this-> ui-> myGraphicsView-> width（）及其高度等效，但这些值不准确。
I want to know the size of a certain QGraphicsView. Its size isn't fixed because the widget is part of a grid layout. I tried using this->ui->myGraphicsView->width() and its height equivalent but these values aren't accurate.
如何获得 QGraphicsView 的当前大小？
推荐答案
不断接收100x30作为我的QGraphicsView的大小，以及。原来我要求的大小QGraphicsView之前它被显示。
Constantly received 100x30 as the size of my QGraphicsView as well. It turned out I was asking for the size of the QGraphicsView before it was shown.
将我的初始化代码移动到showEvent后，我得到正确的尺寸。
After moving my initialization code to showEvent, I got the correct dimensions.
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