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QML boxes with a transparent background under macOS

  • 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);
    anchor_configurationQML->setProperty("param1", param1);
    if (component_configurationQML->isReady())
    	configurationQML = qobject_cast<QQuickWindow*>(component_configurationQML->create());
    	configurationQML->setPosition(QPoint(0, QMLdeltaY));

    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()

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