qt-splitter

在 qt designer 里面,选择两个 widgets 右键选择布局,里面有 splitter 布局可用

doc

设置宽度

QList<int> widgetSizes;
widgetSizes << 200 <<800;
ui.splitter->setSizes(widgetSizes);
ui.splitter->setStretchFactor(0, 1);
ui.splitter->setStretchFactor(1, 3);