QT之 给控件添加右键菜单

一、效果预览

二、代码

cpp文件

//listView右键菜单
void MainWindow::Rightclicklistview()
{


    //初始化一级菜单
    TotalRightclick =new QMenu(this);
    AddDevice = new QMenu(this);
    upDevice = new QAction(this);
    DownDevice = new QAction(this);
    Delete = new QAction(this);
    EditDevice = new QAction(this);

    //初始化二级菜单
    DeviceIS6201A =new QMenu(this);
    DeviceIS6202A = new QMenu(this);
    DeviceIS6203A = new QMenu(this);

    //初始化三级菜单
    DeviceIS6201A_IIC = new QAction(this);
    DeviceIS6201A_PMBV1 = new QAction(this);
    DeviceIS6201A_PMBV2= new QAction(this);

    //各级图标
    //一级图标
    QIcon iconadd = QIcon(":/Res/tools/add.png");  //加载图片
    QIcon iconUp = QIcon(":/Res/tools/moveup.png");  //加载图片
    QIcon iconDown = QIcon(":/Res/tools/movedown.png");  //加载图片
    QIcon iconDelete = QIcon(":/Res/tools/delete.png");  //加载图片
    QIcon iconEdit = QIcon(":/Res/tools/paste.png");  //加载图片
    
    
    //二级图标
    QIcon iconUser = QIcon(":/Res/tools/user.png");  //加载图片
    
    //三级图标
    QIcon iconChip = QIcon(":/Res/tools/xinpian.png");  //加载图片

    //子对象在父对象里面从属关系匹配
    AddDevice  = TotalRightclick->addMenu(iconadd,"  Add Device");
    upDevice = TotalRightclick->addAction(iconUp,"  Move Up Device");
    DownDevice = TotalRightclick->addAction(iconDown,"  Move Down Device");
    Delete = TotalRightclick->addAction(iconDelete,"  Delete Device");
    EditDevice = TotalRightclick->addAction(iconEdit,"  Edit Device");

    DeviceIS6201A = AddDevice->addMenu(iconUser,"  IS6201A");
    DeviceIS6202A = AddDevice->addMenu(iconUser,"  IS6202A");
    DeviceIS6203A = AddDevice->addMenu(iconUser,"  IS6203A");

    DeviceIS6201A_IIC = DeviceIS6201A->addAction(iconChip,  "  IS6201A_IIC");
    DeviceIS6201A_PMBV1 = DeviceIS6201A->addAction(iconChip,"  IS6201A_PMBV1");
    DeviceIS6201A_PMBV2= DeviceIS6201A->addAction(iconChip, "  IS6201A_PMBV2");


      //给动作设置信号槽
      connect( upDevice, &QAction::triggered, [=]()
      {
          qDebug()<<"I'm upDevice";
      });
      connect( DownDevice, &QAction::triggered, [=]()
      {
          qDebug()<<"I'm DownDevice";
      });
      //给动作设置信号槽
      connect( Delete, &QAction::triggered, [=]()
      {
		}


          qDebug()<<"I'm DeleteAction";
      });
      connect( EditDevice, &QAction::triggered, [=]()
      {
          qDebug()<<"I'm btnSecondAction";
      });


  
      connect( DeviceIS6201A_PMBV1, &QAction::triggered, [=]()
      {
 		 qDebug()<<"I'm DeviceIS6201A_PMBV1";
      });

      connect( DeviceIS6201A_PMBV2, &QAction::triggered, [=]()
      {
          qDebug()<<"I'm DeviceIS6201A_PMBV2";
      });



      //绑定控件显示右键菜单给控件设置上下文菜单策略
      ui->listView->setContextMenuPolicy(Qt::CustomContextMenu);
      //鼠标右键点击控件时会发送一个void QWidget::customContextMenuRequested(const QPoint &pos)信号
      //给信号设置相应的槽函数
      connect(ui->listView,&QLabel::customContextMenuRequested,[=](const QPoint &pos)
      {
          qDebug()<<pos;//参数pos用来传递右键点击时的鼠标的坐标，这个坐标一般是相对于控件左上角而言的
          TotalRightclick->exec(QCursor::pos());
      });


}
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h文件

private:

    void Rightclicklistview();
    // 声明动作
    QAction * upDevice;
    QAction * DownDevice;
    QAction * Delete;
    QAction * EditDevice;
    QAction * DeviceIS6201A_IIC;
    QAction * DeviceIS6201A_PMBV1;
    QAction * DeviceIS6201A_PMBV2;


    //声明菜单
    QMenu * TotalRightclick;
    QMenu * AddDevice;
    QMenu * DeviceIS6201A;
    QMenu * DeviceIS6202A;
    QMenu * DeviceIS6203A;

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文档解释参考一

参考二

参考三