static bool createConnection()
{
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
    db.setDatabaseName ("C:\\addressbook");
    db.setUserName("root");
    db.setHostName("Notebook");
    db.setPassword("root");
    if (!db.open()) {
        qDebug() << "Cannot open database:" << db.lastError();
        return false;
    }
    return true;
}

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

    QWidget *window = new QWidget;
    window->setWindowTitle("Sqlite COPY/PASTE");
    QPushButton *button = new QPushButton ("Copy");
    connect (button, SIGNAL(clicked()), получатель , SLOT(слот));
    button->show();

    //Соединяемся с менеджером баз данных
    if (!createConnection()) {
        return -1;
    }

    //Создаем базу
    QSqlQuery query;
    QString str = "CREATE TABLE addressbook2 ( "
                  "number INTEGER PRIMARY KEY NOT NULL, "
                  "name VARCHAR(15), "
                  "phone VARCHAR(12), "
                  "email VARCHAR(15) "
                  ");";
    if (!query.exec(str)) {
        qDebug() << "Unable to create a table";
    }
    //Добавляем данные в базу
    QString strF =
            "INSERT INTO addressbook2 (number, name, phone, email) "
            "VALUES(%1, '%2', '%3', '%4');";

    str = strF.arg("1")
          .arg("Piggy")
          .arg("+49 631322187")
          .arg("piggy@mega.de");

    if (!query.exec(str)) {
        qDebug() << "Unable to do insert operation";
    }

    str = strF.arg("2")
          .arg("Kermit")
          .arg("+49 631322181")
          .arg("kermit@mega.de");

    if (!query.exec(str)) {
        qDebug() << "Unable to do insert operation";
    }
    if (!query.exec("SELECT * FROM addressbook2;")) {
        qDebug() << "Unable to execute query - exiting";
        return 1;
    }

    //Считываем данные из базы
    QSqlRecord rec = query.record();
    int nNumber = 0;
    QString strName;
    QString strPhone;
    QString strEmail;

    while (query.next()) {
        nNumber = query.value(rec.indexOf("number")).toInt();
        strName = query.value(rec.indexOf("name")).toString();
        strPhone = query.value(rec.indexOf("phone")).toString();
        strEmail = query.value(rec.indexOf("email")).toString();
        qDebug() << nNumber << " " << strName << ";\t"
                << strPhone << ";\t" << strEmail;
    }

    QTableView view;
    QSqlTableModel model;
    model.setTable("addressbook2");
    model.select();
    model.setEditStrategy(QSqlTableModel::OnFieldChange);
    view.setModel(&model);
    view.show();

    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(button);
    window->setLayout(layout);
    window->show();
    return a.exec();
}