QML boxes with a transparent background under macOS

Francky033

Hello,

I use qml boxes that I manage from C++.
Everything works well but I can't display boxes with a transparent background under macOS. The boxes are displayed correctly under Linux, Windows and Android...
Is there anything different to do with macOS?

Thank you!

Example of display of one of these boxes :

engine_configuration->rootContext()->setContextProperty("anchor", anchor_configurationQML);

component_configurationQML = new QQmlComponent(engine_configuration);
component_configurationQML->loadUrl(QUrl("qrc:///qml/configuration.qml"));

anchor_configurationQML->setProperty("param1", param1);
		
if (component_configurationQML->isReady())
{
	configurationQML = qobject_cast<QQuickWindow*>(component_configurationQML->create());

	configurationQML->setPosition(QPoint(0, QMLdeltaY));

	configurationQML->setFlags(Qt::FramelessWindowHint);

	configurationQML->showNormal();
}

my qml can looks like this:

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtQuick.Controls.Material 2.15
import MyLib 1.0

Window {
    id: main2

    property double trans: 0.0
    property bool mobile: anchor.Android
    property int h: anchor.Height
    property int posy: 0
    property int timeoutInterval: 50
    signal timeout

    modality: Qt.NonModal

    visible: false
    visibility: Window.Windowed
    color: "#00000000"
    opacity: trans
    x: 0
    y: 0
    width: 300
    height: h

    Flickable {
        id: flickableMain
        anchors.rightMargin: 0
        anchors.leftMargin: 0
        anchors.topMargin: 0
        anchors.bottomMargin: 0
        anchors.fill: parent
        boundsBehavior: Flickable.StopAtBounds

        contentWidth: parent.width
        contentHeight: h > 1500 ? h : 1500

        width: parent.width
        height: parent.height

        Keys.onUpPressed: scrollBar.decrease()
        Keys.onDownPressed: scrollBar.increase()

....