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();
}