Qt 5.6 | Qt SQL | SQL Browser | main.cpp Example File

Qt 5.6.2 Reference Documentation

# main.cpp Example File

sqlbrowser/main.cpp

      /****************************************************************************
      **
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      ** Contact: http://www.qt.io/licensing/
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      ** This file is part of the demonstration applications of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:LGPL21$
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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();
      }