Process.h

#include <QProcess>
#include <QObject>
#include <QVariant>

class Process : public QProcess {
    Q_OBJECT

public:
    Process(QObject *parent = 0) : QProcess(parent) { }

    Q_INVOKABLE void start(const QString &program, const QVariantList &arguments) {
        QStringList args;

        // convert QVariantList from QML to QStringList for QProcess

        for (int i = 0; i < arguments.length(); i++)
            args << arguments[i].toString();

        QProcess::start(program, args);
    }

    Q_INVOKABLE void kill() {
        return QProcess::kill();
    }

    Q_INVOKABLE void terminate() {
        return QProcess::terminate();
    }

    Q_INVOKABLE QByteArray readAll() {
        return QProcess::readAll();
    }

    Q_INVOKABLE QByteArray readAllStandardOutput()
    {
      return QProcess::readAllStandardOutput();
    }

    Q_INVOKABLE QByteArray readAllStandardError()
    {
      return QProcess::readAllStandardError();
    }
};