Qt右击菜单栏实现

Qt右击菜单栏实现

2016年02月17日 09:18:16 vaychouzww 阅读数 972

1.以treeview控件为例，首先，设置treeview的右击属性，

   ui->treeView_2->setContextMenuPolicy(Qt::CustomContextMenu);

2.创建treeview右击菜单槽函数，如：

void MainWindow::on_treeView_2_customContextMenuRequested(const QPoint &pos)

{

    QAction* common = nullptr;

    common = new QAction(QIcon(":/TreeIcon/TreeIcon/refresh.png"), tr("刷新列表"), this);

    QAction* cc_1 = nullptr;

    cc_1 = new QAction(QIcon(":/TreeIcon/TreeIcon/changelib.png"), tr("修改设备"), this);

    QAction* cc_2 = nullptr;

    cc_2 = new QAction(QIcon(":/TreeIcon/TreeIcon/property.png"), tr("设备属性"), this);

    QMenu *menu = new QMenu(this);

    menu->addAction(common);

    menu->addAction(cc_1);

    menu->addAction(cc_2);

    connect(common, &QAction::triggered, this, &MainWindow::UpdateDevList); //每个Action信号相应一个槽函数

    connect(cc_1, &QAction::triggered, this, &MainWindow::changedev);

    connect(cc_2, &QAction::triggered, this, &MainWindow::showdevsta);

    menu->setStyleSheet("QMenu{background-color:rgb(255,255,255);color:rgb(35, 103, 174);font:10pt ""Microsoft YaHei"";}"

    "QMenu::item:selected{background-color:#CCDAE7;}"

    "QMenu::item:disabled{color:#BFBFBF;}");

    QModelIndex index = ui->treeView_2->indexAt(pos);

    if(index.data().toString().isEmpty())

    {

        cc_1->setDisabled(true);

        cc_2->setDisabled(true);

        menu->exec(QCursor::pos());

    }else if(!index.parent().isValid())

    {

        cc_1->setDisabled(true);

        cc_2->setDisabled(true);

        menu->exec(QCursor::pos());

    }else if(index.parent().isValid())

    {

        /*QModelIndex cur_p = index.parent();

        int selectrow_p = cur_p.row();

        int selectrow_c = index.row();

        QStandardItemModel* model = static_cast(ui->treeView->model());

        QStandardItem* item = model->item(selectrow_p,0)->child(selectrow_c,0);

        libm_storied = item->accessibleText().toStdString();

        QList::iterator it2;

        for(it2 = facewin.begin();it2 != facewin.end();++it2)

        {

            if(QString::fromStdString(libm_storied).toInt() == (*it2)->storeid)

            {

                libm_confide = QString::number((*it2)->confide).toStdString();

                break;

            }

        }*/

        menu->exec(QCursor::pos());

    }

}