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QT: 操作主从视图及XML

时间：2024-11-13 21:49:03浏览次数：1  
标签：XML const QT void 视图 ui QString include MainWindow

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connectdlg.h 

#ifndef CONNECTDLG_H
#define CONNECTDLG_H

#include <QDialog>
#include <QMessageBox>

class QSqlError;

namespace Ui {
class ConnDlg;
}

class ConnDlg : public QDialog
{
    Q_OBJECT

public:
   // explicit ConnDlg(QWidget *parent = nullptr);
   // ~ConnDlg();
    explicit ConnDlg(QWidget *parent = 0);
    ~ConnDlg();
    QString driverName() const;
    QString databaseName() const;
    QString userName() const;
    QString password() const;
    QString hostName() const;
    int port() const;
    QSqlError addConnection(const QString &driver, const QString &dbName,
                            const QString &host, const QString &user,
                            const QString &passwd, int port = -1);


private:
    Ui::ConnDlg *ui;
   // Ui::QSqlConnectionDialogUi *ui;

private slots:
    void createDB();
    void addSqliteConnection();
    void on_okButton_clicked();
    void on_cancelButton_clicked(){ reject(); }
    void driverChanged(const QString &);
};

#endif // CONNECTDLG_H

　　

connectdlg.cpp 

#include "connectdlg.h"
#include "ui_connectdlg.h"

#include <QtSql/QSqlDatabase>
#include <QtSql/QSql>
#include <QtSql/QtSql>

ConnDlg::ConnDlg(QWidget *parent) :
    QDialog(parent)
    ,ui(new Ui::ConnDlg)
{
    ui->setupUi(this);
    QStringList drivers = QSqlDatabase::drivers(); // 查找数据库驱动
    ui->comboDriver->addItems(drivers);
    connect(ui->comboDriver,SIGNAL(currentIndexChanged(const QString &)),this,
            SLOT(driverChanged(const QString &)));
    ui->status_label->setText(tr("准备连接数据库！"));
}


QString ConnDlg::driverName() const
{
    return ui->comboDriver->currentText();
}

QString ConnDlg::databaseName() const
{
    return ui->editDatabase->text();
}

QString ConnDlg::userName() const
{
    return ui->editUsername->text();
}

QString ConnDlg::password() const
{
    return ui->editPassword->text();
}

QString ConnDlg::hostName() const
{
    return ui->editHostname->text();
}

int ConnDlg::port() const
{
    return ui->portSpinBox->value();
}

QSqlError ConnDlg::addConnection(const QString &driver, const QString &dbName, const QString &host, const QString &user, const QString &passwd, int port)
{
    QSqlError err;
    QSqlDatabase db = QSqlDatabase::addDatabase(driver);
    db.setDatabaseName(dbName);
    db.setHostName(host);
    db.setPort(port);
    if(!db.open(user,passwd))
    {
        err = db.lastError();
    }
    return err;
}

void ConnDlg::createDB()
{
    //创建数据库
    QSqlQuery query ;
    query.exec("create table factory (id int primary key, manufactory varchar(40),"
               "address varchar(40) )");
    query.exec(QObject::tr("insert into factory values(1,'一汽大众','长春')"));
    query.exec(QObject::tr("insert into factory values(2,'二汽神龙','武汉')"));
    query.exec(QObject::tr("insert into factory values(3,'上海大众','上海')"));

    query.exec("create table cars (carid int primary key, name varchar(50),"
               "factoryid int, year int, foreign key(factoryid) references factory"
               "  )");
    query.exec("insert into cars values(1,'奥迪A6',1,2005)");
    query.exec("insert into cars values(2,'捷达',1,1993)");
    query.exec("insert into cars values(3,'宝来',1,2000)");
    query.exec("insert into cars values(4,'毕加索',2,1999)");
    query.exec("insert into cars values(5,'富康',2,2004)");
    query.exec("insert into cars values(6,'标致',2,2001)");
    query.exec("insert into cars values(7,'桑塔纳',3,1995)");
    query.exec("insert into cars values(8,'帕萨特',3,2000)");
}

void ConnDlg::addSqliteConnection()
{
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName("databasefile.db");
    if(!db.open())
    {
        ui->status_label->setText(db.lastError().text());
        return;
    }
    ui->status_label->setText(tr("创建SQLite数据库成功！"));

}

void ConnDlg::on_okButton_clicked()
{
    //
    if(ui->comboDriver->currentText().isEmpty()){
        ui->status_label->setText(tr("请选择一个数据库驱动！"));
        ui->comboDriver->setFocus();
    }
    else if(ui->comboDriver->currentText() == "QSQLITE")
    {
        addSqliteConnection();
        createDB();//创建数据库表，如已存在则无须执行
        accept();
    }
    else
    {
        QSqlError err = addConnection(driverName(),databaseName(),hostName(),userName(),
                                      password(),port());
        if(err.type() != QSqlError::NoError)
            ui->status_label->setText(err.text());
        else{
            ui->status_label->setText("连接数据库成功！");
            accept();
        }
    }
}

void ConnDlg::driverChanged(const QString &text)
{
    //
    if(text == "QSQLITE")
    {
        ui->editDatabase->setEnabled(false);
        ui->editUsername->setEnabled(false);
        ui->editPassword->setEnabled(false);
        ui->editHostname->setEnabled(false);
        ui->portSpinBox->setEnabled(false);
    }
    else
    {
        ui->editDatabase->setEnabled(true);
        ui->editUsername->setEnabled(true);
        ui->editPassword->setEnabled(true);
        ui->editHostname->setEnabled(true);
        ui->portSpinBox->setEnabled(true);
    }
}

ConnDlg::~ConnDlg()
{
    delete ui;
}

　　

connectdlg.ui 详细代码：

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>ConnDlg</class>
 <widget class="QDialog" name="ConnDlg">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>450</width>
    <height>397</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>数据库连接</string>
  </property>
  <widget class="QGroupBox" name="connGroupBox">
   <property name="geometry">
    <rect>
     <x>10</x>
     <y>10</y>
     <width>431</width>
     <height>261</height>
    </rect>
   </property>
   <property name="title">
    <string>数据库连接设置</string>
   </property>
   <widget class="QComboBox" name="comboDriver">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>30</y>
      <width>221</width>
      <height>22</height>
     </rect>
    </property>
   </widget>
   <widget class="QLineEdit" name="editDatabase">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>70</y>
      <width>181</width>
      <height>21</height>
     </rect>
    </property>
    <property name="text">
     <string>databasefile.db</string>
    </property>
   </widget>
   <widget class="QLineEdit" name="editUsername">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>100</y>
      <width>181</width>
      <height>21</height>
     </rect>
    </property>
    <property name="text">
     <string>admin</string>
    </property>
   </widget>
   <widget class="QLineEdit" name="editPassword">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>130</y>
      <width>181</width>
      <height>21</height>
     </rect>
    </property>
    <property name="text">
     <string>123456</string>
    </property>
    <property name="echoMode">
     <enum>QLineEdit::Password</enum>
    </property>
    <property name="placeholderText">
     <string/>
    </property>
   </widget>
   <widget class="QLineEdit" name="editHostname">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>160</y>
      <width>181</width>
      <height>21</height>
     </rect>
    </property>
    <property name="text">
     <string>localhost</string>
    </property>
   </widget>
   <widget class="QSpinBox" name="portSpinBox">
    <property name="geometry">
     <rect>
      <x>170</x>
      <y>190</y>
      <width>181</width>
      <height>22</height>
     </rect>
    </property>
    <property name="maximum">
     <number>65535</number>
    </property>
   </widget>
   <widget class="QLabel" name="textLabel2">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>30</y>
      <width>72</width>
      <height>15</height>
     </rect>
    </property>
    <property name="text">
     <string>驱动：</string>
    </property>
   </widget>
   <widget class="QLabel" name="textLabel3">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>70</y>
      <width>72</width>
      <height>15</height>
     </rect>
    </property>
    <property name="text">
     <string>数据库名：</string>
    </property>
   </widget>
   <widget class="QLabel" name="textLabel4">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>100</y>
      <width>72</width>
      <height>15</height>
     </rect>
    </property>
    <property name="text">
     <string>用户名：</string>
    </property>
   </widget>
   <widget class="QLabel" name="textLabel4_2">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>130</y>
      <width>72</width>
      <height>15</height>
     </rect>
    </property>
    <property name="text">
     <string>密码：</string>
    </property>
   </widget>
   <widget class="QLabel" name="textLabel5">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>170</y>
      <width>72</width>
      <height>15</height>
     </rect>
    </property>
    <property name="text">
     <string>主机名：</string>
    </property>
   </widget>
   <widget class="QLabel" name="textLabel5_2">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>200</y>
      <width>72</width>
      <height>15</height>
     </rect>
    </property>
    <property name="text">
     <string>端口：</string>
    </property>
   </widget>
  </widget>
  <widget class="QLabel" name="status_label">
   <property name="geometry">
    <rect>
     <x>30</x>
     <y>290</y>
     <width>391</width>
     <height>16</height>
    </rect>
   </property>
   <property name="text">
    <string>状态：</string>
   </property>
  </widget>
  <widget class="QWidget" name="horizontalLayoutWidget">
   <property name="geometry">
    <rect>
     <x>20</x>
     <y>330</y>
     <width>401</width>
     <height>41</height>
    </rect>
   </property>
   <layout class="QHBoxLayout" name="horizontalLayout">
    <item>
     <spacer name="horizontalSpacer">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>
        <width>40</width>
        <height>20</height>
       </size>
      </property>
     </spacer>
    </item>
    <item>
     <widget class="QPushButton" name="okButton">
      <property name="text">
       <string>连接</string>
      </property>
     </widget>
    </item>
    <item>
     <widget class="QPushButton" name="cancelButton">
      <property name="text">
       <string>取消</string>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
 </widget>
 <resources/>
 <connections>
  <connection>
   <sender>cancelButton</sender>
   <signal>clicked()</signal>
   <receiver>ConnDlg</receiver>
   <slot>reject()</slot>
   <hints>
    <hint type="sourcelabel">
     <x>373</x>
     <y>349</y>
    </hint>
    <hint type="destinationlabel">
     <x>224</x>
     <y>198</y>
    </hint>
   </hints>
  </connection>
  <connection>
   <sender>okButton</sender>
   <signal>clicked()</signal>
   <receiver>ConnDlg</receiver>
   <slot>accept()</slot>
   <hints>
    <hint type="sourcelabel">
     <x>274</x>
     <y>349</y>
    </hint>
    <hint type="destinationlabel">
     <x>224</x>
     <y>198</y>
    </hint>
   </hints>
  </connection>
 </connections>
</ui>

mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>1057</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QGroupBox" name="createFactoryGroupBox">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>20</y>
      <width>561</width>
      <height>201</height>
     </rect>
    </property>
    <property name="title">
     <string>汽车制造商</string>
    </property>
   </widget>
   <widget class="QGroupBox" name="createCarGroupBox">
    <property name="geometry">
     <rect>
      <x>20</x>
      <y>230</y>
      <width>561</width>
      <height>231</height>
     </rect>
    </property>
    <property name="title">
     <string>汽车</string>
    </property>
   </widget>
   <widget class="QGroupBox" name="createDetailsGroupBox">
    <property name="geometry">
     <rect>
      <x>600</x>
      <y>20</y>
      <width>441</width>
      <height>441</height>
     </rect>
    </property>
    <property name="title">
     <string>详细信息</string>
    </property>
   </widget>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>1057</width>
     <height>26</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

　　

　　

mainwindow.cpp 

#include "mainwindow.h"
#include "ui_mainwindow.h"

#include <QGridLayout>
#include <QAbstractItemView>
#include <QHeaderView>
#include <QAction>
#include <QMenu>
#include <QMenuBar>
#include <QDialog>

MainWindow::MainWindow(const QString &factoryTable, const QString &carTable,
                       QFile *carDetails, QWidget *parent)
    : QMainWindow(parent)
   // , ui(new Ui::MainWindow)
{
   // ui->setupUi(this);
    file = carDetails;
        readCarData();
        carModel = new QSqlRelationalTableModel(this);
        carModel->setTable(carTable);
        carModel->setRelation(2,QSqlRelation(factoryTable,"id","manufactory"));
        carModel->select();

        factoryModel = new QSqlTableModel(this);
        factoryModel->setTable(factoryTable);
        factoryModel->select();

        QGroupBox *factory = createFactoryGroupBox();
        QGroupBox *cars = createCarGroupBox();
        QGroupBox *details = createDetailsGroupBox();
        // 布局
        QGridLayout *layout = new QGridLayout;
        layout->addWidget(factory,0,0);
        layout->addWidget(cars,1,0);
        layout->addWidget(details,0,1,2,1);
        layout->setColumnStretch(1,1);
        layout->setColumnMinimumWidth(0,500);
        QWidget *widget = new QWidget;
        widget->setLayout(layout);
        setCentralWidget(widget);
        createMenuBar();
        resize(850,400);
        setWindowTitle(tr("主从视图"));
}

MainWindow::~MainWindow()
{
   // delete ui;
}



void MainWindow::addCar()
{
    //
    /*
    Dialog *dialog = new QDialog(carModel, factoryModel,carData, file, this);
    int accepted = dialog->exec();
    if(accepted ==1 ){
        int lastRow = carModel->rowCount()-1;
        carView->selectRow(lastRow);
        carView->scrollToBottom();
        showCarDetails(carModel->index(lastRow,0));
    }
    */
}

void MainWindow::changeFactory(QModelIndex index)
{
    QSqlRecord record = factoryModel->record(index.row());
    QString factoryId = record.value("id").toString();
    carModel->setFilter("id = '"+ factoryId + "'");
    showFactoryProfile(index);
}

void MainWindow::delCar()
{
    QModelIndexList selection = carView->selectionModel()->selectedRows(0);
    if(!selection.empty()){
        QModelIndex idIndex = selection.at(0);
      int id = idIndex.data().toInt();
      QString name = idIndex.sibling(idIndex.row(),1).data().toString();
      QString factory = idIndex.sibling(idIndex.row(),2).data().toString();
      QMessageBox::StandardButton button;
      button =QMessageBox::question(this, tr("删除汽车记录"),QString(tr("确认删除由'%1'生产的'%2'吗？").arg(factory).arg(name)),QMessageBox::Yes|QMessageBox::No);
      if(button == QMessageBox::Yes){
          removeCarFromFile(id);
          removeCarFromDatabase(idIndex);
          decreaseCarCount(indexOfFactory(factory));
      }
      else{
          QMessageBox::information(this,tr("删除汽车记录"),tr("请选择要删除的记录"));
      }
    }
}

void MainWindow::showCarDetails(QModelIndex index)
{
    QSqlRecord record = carModel->record(index.row());
    QString factory = record.value("manufactory").toString();
    QString name = record.value("name").toString();
    QString year = record.value("year").toString();
    QString carId = record.value("carid").toString();
    showFactoryProfile(indexOfFactory(factory));
    titleLabel->setText(tr("品牌：%1 (%2)").arg(name).arg(year));
    titleLabel->show();
    QDomNodeList cars = carData.elementsByTagName("car");
    for (int i = 0; i<cars.count(); i++)
    {
        QDomNode car = cars.item(i);
        if(car.toElement().attribute("id")==carId){
            getAttribList(car.toElement());
            break;
        }
    }
    if( (!attribList->count()) == 0){
        attribList->show();
    }
}

void MainWindow::showFactoryProfile(QModelIndex index)
{
    QSqlRecord record = factoryModel->record(index.row());
    QString name = record.value("manufactory").toString();
    int count = carModel->rowCount();
    profileLabel->setText(tr("汽车制造商：%1\n产品数量：%2").arg(name).arg(count));
    profileLabel->show();
    titleLabel->hide();
    attribList->hide();
}

QGroupBox *MainWindow::createFactoryGroupBox()
{
    factoryView = new QTableView;
    factoryView->setEditTriggers(QAbstractItemView::NoEditTriggers);

    factoryView->setSortingEnabled(true);
    factoryView->setSelectionBehavior(QAbstractItemView::SelectRows);
    factoryView->setSelectionMode(QAbstractItemView::SingleSelection);
    factoryView->setShowGrid(false);
    factoryView->setAlternatingRowColors(true);
    factoryView->setModel(factoryModel);

    connect(factoryView, SIGNAL(clicked(QModelIndex)), this, SLOT(changeFactory(QModelIndex)));
    QGroupBox *box = new QGroupBox(tr("汽车制造商"));
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(factoryView,0,0);
    box->setLayout(layout);
    return box;
}

QGroupBox *MainWindow::createCarGroupBox()
{
    //
    QGroupBox *box = new QGroupBox(tr("汽车"));
    carView = new QTableView;
    carView->setEditTriggers(QAbstractItemView::NoEditTriggers);
    carView->setSortingEnabled(true);
    carView->setSelectionBehavior(QAbstractItemView::SelectRows);
    carView->setSelectionMode(QAbstractItemView::SingleSelection);
    carView->setShowGrid(false);
    carView->verticalHeader()->hide();
    carView->setAlternatingRowColors(true);

    carView->setModel(carModel);
    connect(carView, SIGNAL(clicked(QModelIndex)), this, SLOT(showCarDetails(QModelIndex)));
    connect(carView, SIGNAL(activated(QModelIndex)), this, SLOT(showCarDetails(QModelIndex)));

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(carView,0,0);
    box->setLayout(layout);
    return box;
}

QGroupBox *MainWindow::createDetailsGroupBox()
{
    //
    QGroupBox *box = new QGroupBox(tr("详细信息"));
    profileLabel = new QLabel;
    profileLabel->setWordWrap(true);
    profileLabel->setAlignment(Qt::AlignBottom);
    titleLabel = new QLabel;
    titleLabel->setWordWrap(true);
    titleLabel->setAlignment(Qt::AlignBottom);
    attribList = new QListWidget;
    QGridLayout *layout = new QGridLayout;
    layout->addWidget(profileLabel,0,0,1,2);
    layout->addWidget(titleLabel,1,0,1,2);
    layout->addWidget(attribList,2,0,1,2);
    layout->setRowStretch(2,1);
    box->setLayout(layout);
    return box;
}

void MainWindow::createMenuBar()
{
    // 菜单函数
    QAction *addAction = new QAction(tr("添加"),this);
    QAction *deleteAction = new QAction(tr("删除"),this);
    QAction *quitAction = new QAction(tr("退出"),this);
    addAction->setShortcut(tr("Ctrl+A"));
    deleteAction->setShortcut(tr("Ctrl+D"));
    quitAction->setShortcut(tr("Ctrl+Q"));
    QMenu *fileMenu = menuBar()->addMenu(tr("操作菜单"));
    fileMenu->addAction(addAction);
    fileMenu->addAction(deleteAction);
    fileMenu->addSeparator();
    fileMenu->addAction(quitAction);

    connect(addAction, SIGNAL(triggered(bool)), this, SLOT(addCar()));
    connect(deleteAction, SIGNAL(triggered(bool)), this, SLOT(delCar()));
    connect(quitAction, SIGNAL(triggered(bool)), this, SLOT(close()));
}

void MainWindow::decreaseCarCount(QModelIndex index)
{
    int row = index.row();
    int count = carModel->rowCount();
    if(count == 0)
    {
        factoryModel->removeRow(row);
    }
}

void MainWindow::getAttribList(QDomNode car)
{
    attribList->clear();
    QDomNodeList attribs = car.childNodes();
    QDomNode node;
    QString attribNumber;
    for(int j = 0; j<attribs.count(); j++){
        node = attribs.item(j);
        attribNumber = node.toElement().attribute("number");
        QListWidgetItem *item = new QListWidgetItem(attribList);
        QString showText(attribNumber + ": " + node.toElement().text());
        item->setText(tr("%1").arg(showText));

    }
}

QModelIndex MainWindow::indexOfFactory(const QString &factory)
{
    for(int i =0 ;i < factoryModel->rowCount(); i++){
        QSqlRecord record = factoryModel->record(i);
        if(record.value("manufactory")== factory)
            return factoryModel->index(i,1);
    }
    return QModelIndex();
}

void MainWindow::readCarData()
{
    if(!file->open(QIODevice::ReadOnly))
        return;
    if(!carData.setContent(file))
    {
        file->close();
        return;
    }
    file->close();
}

void MainWindow::removeCarFromDatabase(QModelIndex index)
{
    carModel->removeRow(index.row());
}

void MainWindow::removeCarFromFile(int id)
{
    QDomNodeList cars = carData.elementsByTagName("car");
    for(int i = 0; i<cars.count(); i++){
        QDomNode node = cars.item(i);
        if(node.toElement().attribute("id").toInt()==id){
            carData.elementsByTagName("archive").item(0).removeChild(node);
            break;
        }
    }
}

　　

mainwindow.h 

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>


#include <QGroupBox>
#include <QTableView>
#include <QListWidget>
#include <QLabel>
#include <QFile>
#include <QSqlRelationalTableModel>
#include <QSqlTableModel>
#include <QDomNode>
#include <QDomDocument>
#include <QtSql/QSqlRecord>
#include <QMessageBox>


QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(const QString &factoryTable, const QString &carTable,
               QFile *carDetails, QWidget *parent = nullptr);
    ~MainWindow();

private:
    QGroupBox *createCarGroupBox();
    QGroupBox *createFactoryGroupBox();
    QGroupBox *createDetailsGroupBox();
    void createMenuBar();
    QTableView *carView;
    QTableView *factoryView;
    QListWidget *attribList;
    /* 声明相关的信息标签 **/
    QLabel *profileLabel;
    QLabel *titleLabel;

    //
    void decreaseCarCount(QModelIndex index); // 减少汽车数量
    void getAttribList(QDomNode car);
    QModelIndex indexOfFactory(const QString &factory);
    void readCarData();
    void removeCarFromDatabase(QModelIndex index);
    void removeCarFromFile(int id);
    QDomDocument carData;
    QFile *file;
    QSqlRelationalTableModel *carModel;
    QSqlTableModel *factoryModel;

    Ui::MainWindow *ui;

private slots:
    void addCar();
    void changeFactory(QModelIndex index);
    void delCar();
    void showCarDetails(QModelIndex index);
    void showFactoryProfile(QModelIndex index);
};
#endif // MAINWINDOW_H

　　

 

attribs.xml 

<?xml version="1.0" encoding="utf-8"?>
<archive>
  <car id="1">
    <attrib number="01">排量：2393ml</attrib>
        <attrib number="02">价格：43.26万元</attrib>
        <attrib number="03">排放：欧4</attrib>
        <attrib number="04">油耗：7.01(90km/h)</attrib>
        <attrib number="05">功率：130/6000</attrib>
  </car>
  <car id="2">
    <attrib number="01">排量：1600ml</attrib>
        <attrib number="02">价格：8.98万元</attrib>
        <attrib number="03">排放：欧3</attrib>
        <attrib number="04">油耗：6.11(90km/h)</attrib>
        <attrib number="05">功率：68/5800</attrib>
  </car>
  <car id="3">
    <attrib number="01">排量：1600ml</attrib>
        <attrib number="02">价格：11.25万元</attrib>
        <attrib number="03">排放：欧3带OBD</attrib>
        <attrib number="04">油耗：6.01(90km/h)</attrib>
        <attrib number="05">功率：74/6000</attrib>
  </car>
  <car id="4">
    <attrib number="01">排量：1997ml</attrib>
        <attrib number="02">价格：15.38万元</attrib>
        <attrib number="03">排放：欧3带OBD</attrib>
        <attrib number="04">油耗：7.01(90km/h)</attrib>
        <attrib number="05">功率：130/6000</attrib>
  </car>
  <car id="5">
    <attrib number="01">排量：1600ml</attrib>
        <attrib number="02">价格：6.58万元</attrib>
        <attrib number="03">排放：欧3</attrib>
        <attrib number="04">油耗：6.51(90km/h)</attrib>
        <attrib number="05">功率：65/5600</attrib>
  </car>
  <car id="6">
    <attrib number="01">排量：1997ml</attrib>
        <attrib number="02">价格：16.08万元</attrib>
        <attrib number="03">排放：欧4</attrib>
        <attrib number="04">油耗：7.01(90km/h)</attrib>
        <attrib number="05">功率：108/6000</attrib>
  </car>
  <car id="7">
    <attrib number="01">排量：1781ml</attrib>
        <attrib number="02">价格：7.98万元</attrib>
        <attrib number="03">排放：欧3</attrib>
        <attrib number="04">油耗：7.21(90km/h)</attrib>
        <attrib number="05">功率：70/5200</attrib>
  </car>
  <car id="8">
    <attrib number="01">排量：1984ml</attrib>
        <attrib number="02">价格：19.58万元</attrib>
        <attrib number="03">排放：欧4</attrib>
        <attrib number="04">油耗：7.11(90km/h)</attrib>
        <attrib number="05">功率：85/5400</attrib>
  </car>
</archive>

　　

标签：XML,const,QT,void,视图,ui,QString,include,MainWindow
From： https://www.cnblogs.com/samrv/p/18544892

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