- Qt 5.5
- Qt SQL
- SQL Browser
- main.cpp Example File
- Qt 5.5.1 Reference Documentation

# main.cpp Example File

sqlbrowser/main.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the demonstration applications of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** Commercial License Usage
    ** Licensees holding valid commercial Qt licenses may use this file in
    ** accordance with the commercial license agreement provided with the
    ** Software or, alternatively, in accordance with the terms contained in
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    ** 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 or version 3 as published by the Free
    ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
    ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
    ** following information to ensure the GNU Lesser General Public License
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    #include "browser.h"

    #include <QtCore>
    #include <QtWidgets>
    #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)));
                continue;
            }
            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);
        mainWin.setCentralWidget(&browser);

        QMenu *fileMenu = mainWin.menuBar()->addMenu(QObject::tr("&File"));
        fileMenu->addAction(QObject::tr("Add &Connection..."), &browser, SLOT(addConnection()));
        fileMenu->addSeparator();
        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);
        mainWin.show();
        if (QSqlDatabase::connectionNames().isEmpty())
            QMetaObject::invokeMethod(&browser, "addConnection", Qt::QueuedConnection);

        return app.exec();
    }