Publish and Subscribe Example

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 #include "publisherdialog.h"
 #include "subscriberdialog.h"

 #include <QApplication>

 #include <qvaluespace.h>

 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);

     app.setOrganizationDomain(QStringLiteral("qt-project.org"));
     app.setApplicationName(QStringLiteral("Publish Subscribe Example"));

     bool createDefault = true;
     bool createPublisher = false;
     bool createSubscriber = false;

     for (int i = 1; i < argc; ++i) {
         if (argv[i] == QStringLiteral("-publisher")) {
             createPublisher = true;
             createDefault = false;
         } else if (argv[i] == QStringLiteral("-subscriber")) {
             createSubscriber = true;
             createDefault = false;
         }
     }

     PublisherDialog *publisher = 0;
     if (createDefault || createPublisher) {
         publisher = new PublisherDialog;
         QObject::connect(publisher, SIGNAL(rejected()), &app, SLOT(quit()));
         publisher->show();
     }

     SubscriberDialog *subscriber = 0;
     if (createDefault || createSubscriber) {
         subscriber = new SubscriberDialog;
         QObject::connect(subscriber, SIGNAL(rejected()), &app, SLOT(quit()));
         subscriber->show();
     }

     int result = app.exec();

     if (publisher)
         delete publisher;
     if (subscriber)
         delete subscriber;

     return result;
 }