Start a Qt project#

Here is a very small Qt project, with a qmake file helloworld.pro:

# SPDX-FileCopyrightText: (C) 2022 Avnet Embedded GmbH
# SPDX-License-Identifier: LicenseRef-Avnet-OSS-1.0
QT += quick

CONFIG += c++11

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
        main.cpp

RESOURCES += qml.qrc

# Additional import path used to resolve QML modules in Qt Creator's code model
QML_IMPORT_PATH =

# Additional import path used to resolve QML modules just for Qt Quick Designer
QML_DESIGNER_IMPORT_PATH =

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

A code source file, main.cpp:

// SPDX-FileCopyrightText: (C) 2022 Avnet Embedded GmbH
// SPDX-License-Identifier: LicenseRef-Avnet-OSS-1.0
#include <QGuiApplication>
#include <QQmlApplicationEngine>

int main(int argc, char *argv[])
{
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
#endif

    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    const QUrl url(QStringLiteral("qrc:/main.qml"));
    QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
                     &app, [url](QObject *obj, const QUrl &objUrl) {
        if (!obj && url == objUrl)
            QCoreApplication::exit(-1);
    }, Qt::QueuedConnection);
    engine.load(url);

    return app.exec();
}

A qml.qrc file:

<!--SPDX-FileCopyrightText: (C) 2022 Avnet Embedded GmbH-->
<!--SPDX-License-Identifier: LicenseRef-Avnet-OSS-1.0-->
<RCC>
    <qresource prefix="/">
        <file>main.qml</file>
    </qresource>
</RCC>

And a main.qml file:

// SPDX-FileCopyrightText: (C) 2022 Avnet Embedded GmbH
// SPDX-License-Identifier: LicenseRef-Avnet-OSS-1.0
import QtQuick 2.12
import QtQuick.Window 2.12

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Rectangle {
        id: page
        width: 640; height: 480
        color: "lightgray"

        Text {
            id: helloText
            text: "Hello world!"
            y: 30
            anchors.horizontalCenter: page.horizontalCenter
            font.pointSize: 24; font.bold: true
        }
    }
}

Create a directory

$ mkdir -p helloworld/helloworld

And put these files in this directory.

Next Steps