Publish and Subscribe Example

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 #include "publisherdialog.h"

 #include "ui_publisherdialog.h"

 #include <qpublishsubscribeglobal.h>
 #include <qvaluespacepublisher.h>

 #include <QPushButton>

 #include <QDebug>

 PublisherDialog::PublisherDialog(QWidget *parent)
 :   QMainWindow(parent), ui(new Ui::PublisherDialog), publisher(0)
 {
     ui->setupUi(this);

     QPushButton *switchButton =
         ui->buttonBox->addButton(tr("Switch"), QDialogButtonBox::ActionRole);
     connect(switchButton, SIGNAL(clicked()), this, SIGNAL(switchRequested()));

     connect(ui->connectButton, SIGNAL(clicked()), this, SLOT(createNewObject()));
     connect(ui->intValue, SIGNAL(valueChanged(int)), this, SLOT(intValueChanged(int)));
     connect(ui->unsetIntButton, SIGNAL(clicked()), this, SLOT(unsetIntValue()));
     connect(ui->setStringButton, SIGNAL(clicked()), this, SLOT(setStringValue()));
     connect(ui->setByteArrayButton, SIGNAL(clicked()), this, SLOT(setByteArrayValue()));

     createNewObject();
 }

 PublisherDialog::~PublisherDialog()
 {
     delete ui;
     delete publisher;
 }

 void PublisherDialog::changeEvent(QEvent *e)
 {
     QMainWindow::changeEvent(e);
     switch (e->type()) {
     case QEvent::LanguageChange:
         ui->retranslateUi(this);
         break;
     default:
         break;
     }
 }

 void PublisherDialog::intValueChanged(int value)
 {
     publisher->setValue(QStringLiteral("intValue"), value);
 }

 void PublisherDialog::unsetIntValue()
 {
     publisher->resetValue(QStringLiteral("intValue"));
 }

 void PublisherDialog::setStringValue()
 {
     publisher->setValue(QStringLiteral("stringValue"), ui->stringValue->text());
 }

 void PublisherDialog::setByteArrayValue()
 {
     publisher->setValue(QStringLiteral("byteArrayValue"), ui->byteArrayValue->text().toLatin1());
 }

 void PublisherDialog::createNewObject()
 {
     if (publisher)
         delete publisher;

     publisher = new QValueSpacePublisher(QValueSpace::WritableLayer, ui->basePath->text());
     if (publisher->isConnected()) {
         ui->setters->setEnabled(true);
         intValueChanged(ui->intValue->value());
         setStringValue();
         setByteArrayValue();
     } else {
         ui->setters->setEnabled(false);
     }
 }