// 事件bool CTestCfgWidget::eventFilter(QObject *, QEvent *evt){    //获取鼠标坐标和窗口坐标    static QPoint lastPnt;    static bool isHover = false;    static bool ismove = false;    // 鼠标按下    if (evt->type() == QEvent::MouseButtonPress)    {         QMouseEvent* e = static_cast
     
      (evt);        //得到水平布局的数量，循环判断鼠标在一个水平布局中        int layoutcount = m_processcfg_mainlayout->count();        for (int k=0;k
      
       (m_processcfg_mainlayout->itemAt(k));            if (!hlayout)            {                return true;            }            QRect rect = hlayout->geometry();            //is the mouse is clicking the key and //if the mouse click the right key            if (rect.contains(e->pos()) && (e->button() == Qt::LeftButton))             {                lastPnt = e->pos();                isHover = true;                //得到要移动的layout编号                m_layoutno = k;                break;            }        }                     }    // 鼠标移动    else if (evt->type() == QEvent::MouseMove && isHover)     {        ismove = true;         // 鼠标位置         QMouseEvent* e = static_cast
       
        (evt);        int dx = e->pos().x() - lastPnt.x();        int dy = e->pos().y() - lastPnt.y();        lastPnt = e->pos();                 // 修改对象位置        m_label[m_layoutno]->move(m_label[m_layoutno]->x(), m_label[m_layoutno]->y() + dy);        m_vec_process_cmdcombox[m_layoutno]->move(m_vec_process_cmdcombox[m_layoutno]->x(), m_vec_process_cmdcombox[m_layoutno]->y() + dy);        m_vec_process_devicecombox[m_layoutno]->move(m_vec_process_devicecombox[m_layoutno]->x(), m_vec_process_devicecombox[m_layoutno]->y() + dy);        m_isautocombox[m_layoutno]->move(m_isautocombox[m_layoutno]->x(), m_isautocombox[m_layoutno]->y() + dy);        m_vec_isdelete_processcfg_checkbox[m_layoutno]->move(m_vec_isdelete_processcfg_checkbox[m_layoutno]->x(), m_vec_isdelete_processcfg_checkbox[m_layoutno]->y() + dy);        //qDebug() << "m_layoutno:" << m_layoutno << endl;        if (m_firstmove)        {            QLayoutItem *item = m_processcfg_mainlayout->itemAt(m_layoutno);            m_processcfg_mainlayout->removeItem(item);            delete item;            qDebug() << "MOVE" << endl;            m_firstmove = false;        }    }    else if (evt->type() == QEvent::MouseButtonRelease && isHover &&ismove)    {        //插入布局,获得鼠标松开左键的坐标值，判断鼠标此时在哪一个布局内，在它之前插入布局        QMouseEvent* e = static_cast
        
         (evt);        int LayoutIndex = 0;        //插入移动的布局        QHBoxLayout *layout = new QHBoxLayout;        layout->addWidget(m_label[m_layoutno]);        layout->addWidget(m_vec_process_cmdcombox[m_layoutno]);        layout->addWidget(m_vec_process_devicecombox[m_layoutno]);        layout->addWidget(m_isautocombox[m_layoutno]);        layout->addWidget(m_vec_isdelete_processcfg_checkbox[m_layoutno]);        //如何获得布局index？可以通过算术来得到        int layoutcount = m_processcfg_mainlayout->count();        //qDebug() << "layoutcount:" << layoutcount << endl;        for (int k = 0; k < layoutcount; k++)        {            QHBoxLayout *hlayout = static_cast
         
          (m_processcfg_mainlayout->itemAt(k));            if (!hlayout)            {                return true;            }            QRect rect = hlayout->geometry();            QHBoxLayout *hlayout1 = static_cast
          
           (m_processcfg_mainlayout->itemAt(k+1)); //在移动到最下方的时候，因为在鼠标移动的时候已经删除布局 if (!hlayout1 && k == layoutcount-1) { LayoutIndex = k; break; } QRect rect1 = hlayout1->geometry(); if (e->pos().x()>rect.x() && (e->pos().y() > rect.y() && e->pos().y() < rect1.y() ) ) { LayoutIndex = k; break; } if (k==0 && e->pos().y()>0 && e->pos().y()
           
            insertLayout(LayoutIndex+1, layout); QLabel *label = m_label[m_layoutno]; m_label.remove(m_layoutno); if (LayoutIndex == m_label.size()) { m_label.push_back(label); } else { m_label.insert(LayoutIndex + 1, label); } qDebug() << "TEST1 ==============================================" << endl; QComboBox *cmd = m_vec_process_cmdcombox[m_layoutno]; m_vec_process_cmdcombox.remove(m_layoutno); if (m_vec_process_cmdcombox.size() == LayoutIndex) { m_vec_process_cmdcombox.push_back(cmd); } else { m_vec_process_cmdcombox.insert(LayoutIndex + 1, cmd); } QComboBox *device = m_vec_process_devicecombox[m_layoutno]; m_vec_process_devicecombox.remove(m_layoutno); if (m_vec_process_devicecombox.size() == LayoutIndex) { m_vec_process_devicecombox.push_back(device); } else { m_vec_process_devicecombox.insert(LayoutIndex + 1, device); } qDebug() << "TEST2 ==============================================" << endl; QComboBox *isauto = m_isautocombox[m_layoutno]; m_isautocombox.remove(m_layoutno); if (m_isautocombox.size() == LayoutIndex) { m_isautocombox.push_back(isauto); } else { m_isautocombox.insert(LayoutIndex + 1, isauto); } QCheckBox *removecheck = m_vec_isdelete_processcfg_checkbox[m_layoutno]; m_vec_isdelete_processcfg_checkbox.remove(m_layoutno); if (m_vec_isdelete_processcfg_checkbox.size() == LayoutIndex) { m_vec_isdelete_processcfg_checkbox.push_back(removecheck); } else { m_vec_isdelete_processcfg_checkbox.insert(LayoutIndex + 1, removecheck); } qDebug() << "TEST3 ==============================================" << endl; //重置label的编号 int size = m_label.size(); for (int i=0;i
            
             setText(number); } int testcount = m_processcfg_mainlayout->count(); //qDebug() << "testcount:" << testcount << endl; //删除正在移动的布局 //计算index的值 int index = -1; //1 获得鼠标点击左键的坐标值,2 获得label编号，循环判断鼠标此时在哪一个水平布局内,3 得到index，删除该水平布局 //如果选中，删除该行的控件 testcount = m_processcfg_mainlayout->count(); m_processcfg_widget->setLayout(m_processcfg_mainlayout); ui.ProcessCfgscrollArea->setWidget(m_processcfg_widget); isHover = false; m_firstmove = true; ismove = false; } return false;}
            
           
          
         
        
       
      
     

在所需页面调用installEventFilter函数，如下：

m_processcfg_widget->installEventFilter(this);