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Файл примера dialog.cpp
network/threadedfortuneserver/dialog.cpp

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 #include <QtGui>
 #include <QtNetwork>

 #include <stdlib.h>

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

 Dialog::Dialog(QWidget *parent)
     : QDialog(parent)
 {
     statusLabel = new QLabel;
     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;
     }

     statusLabel->setText(tr("The server is running on port %1.\n"
                             "Run the Fortune Client example now.")
                          .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"));
 }