Qt Reference Documentation

main.cpp Example File

 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 ** This file is part of the demonstration applications of the Qt Toolkit.
 ** No Commercial Usage
 ** This file contains pre-release code and may not be distributed.
 ** You may use this file in accordance with the terms and conditions
 ** contained in the Technology Preview License Agreement accompanying
 ** this package.
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.LGPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 ** In addition, as a special exception, Nokia gives you certain additional
 ** rights.  These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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 #include "browser.h"

 #include <QtCore>
 #include <QtGui>
 #include <QtSql>

 void addConnectionsFromCommandline(const QStringList &args, Browser *browser)
     for (int i = 1; i < args.count(); ++i) {
         QUrl url(args.at(i), QUrl::TolerantMode);
         if (!url.isValid()) {
             qWarning("Invalid URL: %s", qPrintable(args.at(i)));
         QSqlError err = browser->addConnection(url.scheme(), url.path().mid(1), url.host(),
                                                url.userName(), url.password(), url.port(-1));
         if (err.type() != QSqlError::NoError)
             qDebug() << "Unable to open connection:" << err;

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

     QMainWindow mainWin;
     mainWin.setWindowTitle(QObject::tr("Qt SQL Browser"));

     Browser browser(&mainWin);

     QMenu *fileMenu = mainWin.menuBar()->addMenu(QObject::tr("&File"));
     fileMenu->addAction(QObject::tr("Add &Connection..."), &browser, SLOT(addConnection()));
     fileMenu->addAction(QObject::tr("&Quit"), &app, SLOT(quit()));

     QMenu *helpMenu = mainWin.menuBar()->addMenu(QObject::tr("&Help"));
     helpMenu->addAction(QObject::tr("About"), &browser, SLOT(about()));
     helpMenu->addAction(QObject::tr("About Qt"), qApp, SLOT(aboutQt()));

     QObject::connect(&browser, SIGNAL(statusMessage(QString)),
                      mainWin.statusBar(), SLOT(showMessage(QString)));

     addConnectionsFromCommandline(app.arguments(), &browser);
     if (QSqlDatabase::connectionNames().isEmpty())
         QMetaObject::invokeMethod(&browser, "addConnection", Qt::QueuedConnection);

     return app.exec();

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