Qt 5.9 | Qt Network | Threaded Fortune Server Example | dialog.cpp Example File

Qt 5.9.9 Reference Documentation

# dialog.cpp Example File

threadedfortuneserver/dialog.cpp

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      #include <QtWidgets>
      #include <QtNetwork>

      #include <stdlib.h>

      #include "dialog.h"
      #include "fortuneserver.h"

      Dialog::Dialog(QWidget *parent)
          : QWidget(parent)
      {
          statusLabel = new QLabel;
          statusLabel->setWordWrap(true);
          quitButton = new QPushButton(tr("Quit"));
          quitButton->setAutoDefault(false);

          if (!server.listen()) {
              QMessageBox::critical(this, tr("Threaded Fortune Server"),
                                    tr("Unable to start the server: %1.")
                                    .arg(server.errorString()));
              close();
              return;
          }

          QString ipAddress;
          QList<QHostAddress> ipAddressesList = QNetworkInterface::allAddresses();
          // use the first non-localhost IPv4 address
          for (int i = 0; i < ipAddressesList.size(); ++i) {
              if (ipAddressesList.at(i) != QHostAddress::LocalHost &&
                  ipAddressesList.at(i).toIPv4Address()) {
                  ipAddress = ipAddressesList.at(i).toString();
                  break;
              }
          }
          // if we did not find one, use IPv4 localhost
          if (ipAddress.isEmpty())
              ipAddress = QHostAddress(QHostAddress::LocalHost).toString();
          statusLabel->setText(tr("The server is running on\n\nIP: %1\nport: %2\n\n"
                                  "Run the Fortune Client example now.")
                               .arg(ipAddress).arg(server.serverPort()));

          connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));

          QHBoxLayout *buttonLayout = new QHBoxLayout;
          buttonLayout->addStretch(1);
          buttonLayout->addWidget(quitButton);
          buttonLayout->addStretch(1);

          QVBoxLayout *mainLayout = new QVBoxLayout;
          mainLayout->addWidget(statusLabel);
          mainLayout->addLayout(buttonLayout);
          setLayout(mainLayout);
          setWindowTitle(tr("Threaded Fortune Server"));
      }