c++QTreeWidgetItem显示xml的标签，双击treewidgetitem获取desc和name -QT开发中文网

以下是一个示例代码，可以实现将上述XML字符串显示为QTreeWidget，并在双击节点时获取该节点的Desc和Name属性值：

#include <QtWidgets>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);    

    // 创建XML文档
    QString xmlStr = "<MyItem>\n"
                     "  <Package Head=\"check\" Desc=\"\" Name=\"接收数据\" Id=\"9\">\n"
                     "    <Field Desc=\"经度\" Value=\"118.244\" Type=\"Float\" Name=\"经度\"/>\n"
                     "  </Package>\n"
                     "</MyItem>";
    QDomDocument doc;
    if (!doc.setContent(xmlStr)) {
        qDebug() << "Failed to parse XML.";
        return -1;
    }

    // 创建QTreeWidget并显示XML内容
    QTreeWidget treeWidget;
    QDomElement root = doc.documentElement();
    treeWidget.setHeaderLabels(QStringList() << root.tagName());
    displayXmlNode(&treeWidget, root, nullptr);

    // 连接treewidgetitem的双击信号
    QObject::connect(&treeWidget, &QTreeWidget::itemDoubleClicked, [&](QTreeWidgetItem *item, int) {
        QDomElement elem = item->data(0, Qt::UserRole).value<QDomElement>();
        QString name = elem.attribute("Name");
        QString desc = elem.attribute("Desc");
        qDebug() << "Name:" << name << ", Desc:" << desc;
    });

    // 显示窗口
    treeWidget.show();
    return app.exec();
}

void displayXmlNode(QTreeWidget *treeWidget, const QDomNode &node, QTreeWidgetItem *parentItem)
{
    QTreeWidgetItem *item = new QTreeWidgetItem(parentItem);
    item->setText(0, node.nodeName());
    item->setData(0, Qt::UserRole, QVariant::fromValue(node.toElement()));

    // 处理节点的属性
    QDomNamedNodeMap attrs = node.attributes();
    for (int i = 0; i < attrs.count(); ++i) {
        QDomNode attrNode = attrs.item(i);
        QTreeWidgetItem *attrItem = new QTreeWidgetItem(item);
        attrItem->setText(0, QString("%1=%2").arg(attrNode.nodeName()).arg(attrNode.nodeValue()));
    }

    // 处理子节点
    for (QDomNode child = node.firstChild(); !child.isNull(); child = child.nextSibling()) {
        displayXmlNode(treeWidget, child, item);
    }
}

运行程序，可以看到如下效果：