Qt 5.9 | Qt SQL | SQL Browser | main.cpp Example File

Qt 5.9.9 Reference Documentation

# main.cpp Example File

sqlbrowser/main.cpp

      /****************************************************************************
      **
      ** Copyright (C) 2016 The Qt Company Ltd.
      ** Contact: https://www.qt.io/licensing/
      **
      ** This file is part of the demonstration applications of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** 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
      ** a written agreement between you and The Qt Company. For licensing terms
      ** and conditions see https://www.qt.io/terms-conditions. For further
      ** information use the contact form at https://www.qt.io/contact-us.
      **
      ** BSD License Usage
      ** Alternatively, you may use this file under the terms of the BSD license
      ** as follows:
      **
      ** "Redistribution and use in source and binary forms, with or without
      ** modification, are permitted provided that the following conditions are
      ** met:
      **   * Redistributions of source code must retain the above copyright
      **     notice, this list of conditions and the following disclaimer.
      **   * Redistributions in binary form must reproduce the above copyright
      **     notice, this list of conditions and the following disclaimer in
      **     the documentation and/or other materials provided with the
      **     distribution.
      **   * Neither the name of The Qt Company Ltd nor the names of its
      **     contributors may be used to endorse or promote products derived
      **     from this software without specific prior written permission.
      **
      **
      ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
      **
      ** $QT_END_LICENSE$
      **
      ****************************************************************************/

      #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.addConnection(); });
          fileMenu->addSeparator();
          fileMenu->addAction(QObject::tr("&Quit"), []() { qApp->quit(); });

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

          QObject::connect(&browser, &Browser::statusMessage, [&mainWin](const QString &text) {
              mainWin.statusBar()->showMessage(text);
          });

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

          return app.exec();
      }