Qt Reference Documentation

# dialog.cpp Example File

network/threadedfortuneserver/dialog.cpp

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     ** This file is part of the examples of the Qt Toolkit.
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     #include <QtGui>
     #include <QtNetwork>

     #include <stdlib.h>

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

     Dialog::Dialog(QWidget *parent)
         : QWidget(parent)
     {
         statusLabel = new QLabel;
         statusLabel->setWordWrap(true);
     #ifdef Q_OS_SYMBIAN
         QAction *quitAction = new QAction(tr("Exit"), this);
         quitAction->setSoftKeyRole(QAction::NegativeSoftKey);
         addAction(quitAction);
     #else
         quitButton = new QPushButton(tr("Quit"));
         quitButton->setAutoDefault(false);
     #endif

         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()));

     #ifdef Q_OS_SYMBIAN
         connect(quitAction, SIGNAL(triggered()), this, SLOT(close()));

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