Problem with fullscreen ApplicationWindow

  • Hello,

    I develop a Qt 5.5 application on Windows 7. The target device is a Windows 8.1 tablet.

    The application works fine on Windows 7 but I have a problem with the ApplicationWindow (in fullscreen mode) on Windows 8.1.

    When the window looses the focus (pressing the Windows button or the power button for instance), the application still runs in background but the window does not repaint itself.

    Here is a snippet of my use of the ApplicationWindow:

    import QtQuick 2.5
    import QtQuick.Controls 1.4
    import QtQuick.Window 2.2
        id: mainWindow
        title: qsTr("TestWindow")
        visibility: Window.FullScreen
        visible: true
        Rectangle {
            id: contentPanel
            anchors.fill: parent
            color: "#5d7071"
                anchors.centerIn: parent
                horizontalAlignment: Text.AlignHCenter
                text: "Test Window\n(Click here to close)"
                font.pixelSize: 48
                color: "lightgrey"
                    anchors.fill: parent
                    onClicked: Qt.quit()

    Have you any idea to solve this issue?