Kazi ilikuwa kuandika programu ya Qt Quick (GUI) kupakia firmware mpya kwa kidhibiti cha kugusa.
Programu ya kupakia ilitolewa na mtengenezaji katika programu ya .exe ambayo inapakia faili ya .bin kwenye kidhibiti cha kugusa.
Nilitaka kutumia madarasa ya Qt "QProcess", ambayo inaweza kutumika kupiga simu na kudhibiti programu za ganda. Kwa upande wa Linux, nilikuwa tayari nimetumia hii kwa mafanikio mara kadhaa - lakini kwenye Windows haikufanya kazi mwanzoni.

"Ujanja" au suluhisho la hii ilikuwa kutumia "setWorkingDirectory". Hapa kuna dondoo kutoka kwa faili za .h na .cpp. Tafadhali kumbuka mstari "mchakato->setWorkingDirectory..." katika faili ya .cpp.
cmdlauncher.h

#ifndef CMDLAUNCHER_H
#define CMDLAUNCHER_H

#include <QObject>
#include <QtQuick>
#include <QDebug>
#include <QProcess>
#include <QVariant>
#include <QString>
#include <QDir>

class CmdLauncher : public QProcess
{
    Q_OBJECT

public:
    CmdLauncher(QObject *parent = nullptr);

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

    QString application_directory;
};

#endif // CMDLAUNCHER_H

cmdlauncher.cpp

#include "cmdlauncher.h"

CmdLauncher::CmdLauncher(QObject *parent) : QProcess(parent)
{
    process_running = "start";
}

void CmdLauncher::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();

    // start request or upload process
    QProcess * process = new QProcess();
    process->setWorkingDirectory(application_directory + "/nConsoleTool");
    process->setProcessChannelMode(QProcess::MergedChannels);
    process->start(program, args);
    process->waitForFinished();

    // get values and set states
    QByteArray bytes = process->readAll();
    cmd_output = QString::fromLocal8Bit(bytes);
    emit cmdOutputChanged();
    }
}

main.qml

import QtQuick 2.9
import QtQuick.Window 2.3
import QtQuick.Controls 2.5
import QtQuick.Dialogs 1.2
import QtQuick.Layouts 1.3
import CmdLauncher 1.0

ApplicationWindow {
    id: application_window
    visible: true
    width: 1024
    height: 768
    title: qsTr("Firmware Tool")

    CmdLauncher {
        id: launcher
    }

    Button {
        id: nUpdateFW
        x: 260
        y: 20
        width: 200
        height: 30
        text: "Upload Firmware"

        onClicked: {
            //console.log(launcher.application_directory + "/nConsoleTool/nUpdateFW.exe");
            if (file_path == "") {
                fileMissing.open();
            } else {
                launcher.start(launcher.application_directory + "/nConsoleTool/nUpdateFW.exe", [ file_path, "-ba" ]);
                if (launcher.controller_detected == false) {
                    controllerMissing.open();
                }
            }
        }
    }
}

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