demoapplication.cpp Example File

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 #include <QDebug>
 #include <QDir>

 #include "demoapplication.h"

 DemoApplication::DemoApplication(QString executableName, QString caption, QString imageName, QStringList args)
 {
     imagePath = imageName;
     appCaption = caption;

     if (executableName[0] == QLatin1Char('/'))
         executablePath = executableName;
     else
         executablePath = QDir::cleanPath(QDir::currentPath() + QLatin1Char('/') + executableName);

     arguments = args;

     process.setProcessChannelMode(QProcess::ForwardedChannels);

     QObject::connect( &process, SIGNAL(finished(int,QProcess::ExitStatus)),
                       this, SLOT(processFinished(int,QProcess::ExitStatus)));

     QObject::connect( &process, SIGNAL(error(QProcess::ProcessError)),
                       this, SLOT(processError(QProcess::ProcessError)));

     QObject::connect( &process, SIGNAL(started()), this, SLOT(processStarted()));
 }

 void DemoApplication::launch()
 {
     process.start(executablePath, arguments);
 }

 QImage* DemoApplication::getImage()
 {
     return new QImage(imagePath);
 }

 QString DemoApplication::getCaption()
 {
     return appCaption;
 }

 void DemoApplication::processFinished(int exitCode, QProcess::ExitStatus exitStatus)
 {
     Q_UNUSED(exitCode);
     Q_UNUSED(exitStatus);

     emit demoFinished();

     QObject::disconnect(this, SIGNAL(demoStarted()), 0, 0);
     QObject::disconnect(this, SIGNAL(demoFinished()), 0, 0);
 }

 void DemoApplication::processError(QProcess::ProcessError err)
 {
     qDebug() << "Process error: " << err;
     if (err == QProcess::Crashed)
         emit demoFinished();
 }

 void DemoApplication::processStarted()
 {
     emit demoStarted();
 }