QQuickView (QML) transparent for mouse events

I have a big rectangle with a button centered. I would like that my rectangle is transparent to mouse events except for the button, which must be clickable. I mean, I would like to be able to select code under my rectangle with the mouse, exactly as if no Rectangle was displayed.

I have added a MouseArea for all the big Rect, trying to ignore mouse events, but it does not work.

I read that 'Qt::WA_TransparentForMouseEvents' is used for that purpose, but in Qt windows as fasr as I know, not available in my case.

Thanks in advance

My QML is loaded from main.cpp:

Code:

---

QQuickView* pView = new QQuickView();
 
    pView->setSource(QUrl("qrc:/MyRect.qml"));
    pView->setFlags(Qt::Tool | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
    pView->setColor("transparent");
    pView->show();

---

MyRect.qml:

Code:

---

import QtQuick 2.0
import QtQuick.Controls 1.4
 
Rectangle {
    width: 500
    height: 500
 
    color: "green" // it would be transparent
    opacity: 0.5
 
    Button {
        anchors.centerIn: parent
        height: 50; width: 50
        onClicked: console.log("clicked");
    }
 
    MouseArea {
        anchors.fill: parent
        enabled: false
        propagateComposedEvents: true
        hoverEnabled: false
 
        // All this code I think is useless...
        onClicked: mouse.accepted = false
        onReleased: mouse.accepted = false
        onEntered: mouse.accepted = false
        onExited:  mouse.accepted = false
        onWheel:  mouse.accepted = false
    }
}

---