又请教大佬，如何动态切换布局？水平和垂直轮流换 - QTCN开发网

FormInput::FormInput(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::FormInput)
{
    ui->setupUi(this);

    m_Hlayout = new QHBoxLayout;
    m_Vlayout = new QVBoxLayout;
    /*&QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(ui->label);
    layout->addWidget(ui->lineEdit);

    this->setLayout(layout);*/
// 先全部装起来

    m_Hlayout->addWidget(ui->label);
    m_Hlayout->addWidget(ui->lineEdit);

    m_Vlayout->addWidget(ui->label);
    m_Vlayout->addWidget(ui->lineEdit);

    this->setLayout(m_Hlayout);
}

FormInput::~FormInput()
{
    delete ui;
}
// 布局切换，不好使

void FormInput::setLayout2(bool isH)
{
    // 删除layout
    QLayoutItem *item;

    // https://blog.csdn.net/weixin_34357962/article/details/93190444
    /*while ((item = m_Vlayout->takeAt(0))){
        m_Vlayout->removeWidget(item->widget());
        //item->widget()->setParent(0);// 为空后从界面消失?
        delete item;
    }
    while ((item = m_Hlayout->takeAt(0))){
        m_Hlayout->removeWidget(item->widget());
        //item->widget()->setParent(0);
        delete item;
    }*/

    if(isH){
        //m_Hlayout->addWidget(ui->label);
        //m_Hlayout->addWidget(ui->lineEdit);
        //setLayout(m_Hlayout);
    }else{
        //m_Vlayout->addWidget(ui->label);
        //m_Vlayout->addWidget(ui->lineEdit);
        //setLayout(m_Vlayout);
    }
}