Qt QHBoxLayout百分比大小 [英] Qt QHBoxLayout percentage size

问题描述

如何在两个QHBoxLayouts之间保持长宽比？

How can I maintain an aspect ratio between two QHBoxLayouts?

例如，我希望QHBoxLayout占整个窗口宽度的三分之一，而另一个则为两个整个窗口宽度的三分之二：

For instance I want a QHBoxLayout to be one third of the entire window width and the other to be two thirds of the entire window width:

如何实现？我尝试弄乱它们中控件的大小提示，但没有成功

How can I achieve this? I tried messing with the size hints of the controls in them but that didn't work out

推荐答案

void QSizePolicy :: setHorizo​​ntalStretch（uchar StretchFactor）

示例：

QHBoxLayout* layout = new QHBoxLayout(form);

QWidget* left = new QWidget(form);
QSizePolicy spLeft(QSizePolicy::Preferred, QSizePolicy::Preferred);
spLeft.setHorizontalStretch(1);
left->setSizePolicy(spLeft);
layout->addWidget(left);

QWidget* right = new QWidget(form);
QSizePolicy spRight(QSizePolicy::Preferred, QSizePolicy::Preferred);
spRight.setHorizontalStretch(2);
right->setSizePolicy(spRight);
layout->addWidget(right);

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