LowEnergyScanner: QML Revamp

- Modifications as per ca681cd1b3a51d10106a1287a98c5590100feb6a

Task-number: PYSIDE-2206
Change-Id: Iffcfa58245652fde180f43c560085ae7855ac221
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
(cherry picked from commit fbcf425088f623d440e4a8b342d7fbab9bf5e6b1)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

15 files changed, 272 insertions, 1029 deletions

diff --git a/examples/bluetooth/lowenergyscanner/assets/Characteristics.qml b/examples/bluetooth/lowenergyscanner/Scanner/Characteristics.qml
index 085346d5f..bd3ccbfcb 100644
--- a/examples/bluetooth/lowenergyscanner/assets/Characteristics.qml
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Characteristics.qml
@@ -2,9 +2,15 @@
 // Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
+pragma ComponentBehavior: Bound
 import QtQuick
 
 Rectangle {
+    id: characteristicsPage
+
+    signal showServices
+    signal showDevices
+
     width: 300
     height: 600
 
@@ -18,12 +24,12 @@ Rectangle {
         id: info
         anchors.centerIn: parent
         visible: true
-        dialogText: "Scanning for characteristics...";
+        dialogText: "Scanning for characteristics..."
     }
 
     Connections {
-        target: device
-        function oncharacteristic_updated() {
+        target: Device
+        function oncharacteristics_pdated() {
             menu.menuText = "Back"
             if (characteristicview.count === 0) {
                 info.dialogText = "No characteristic found"
@@ -35,7 +41,7 @@ Rectangle {
         }
 
         function onDisconnected() {
-            pageLoader.source = "qrc:/assets/main.qml"
+            characteristicsPage.showDevices()
         }
     }
 
@@ -46,11 +52,12 @@ Rectangle {
 
         anchors.top: header.bottom
         anchors.bottom: menu.top
-        model: device.characteristic_list
+        model: Device.characteristicList
 
         delegate: Rectangle {
-            id: characteristicbox
-            height:300
+            required property var modelData
+            id: box
+            height: 300
             width: characteristicview.width
             color: "lightsteelblue"
             border.width: 2
@@ -58,24 +65,24 @@ Rectangle {
             radius: 5
 
             Label {
-                id: characteristic_name
-                textContent: modelData.characteristic_name
+                id: characteristicName
+                textContent: box.modelData.characteristic_name
                 anchors.top: parent.top
                 anchors.topMargin: 5
             }
 
             Label {
-                id: characteristic_uuid
-                font.pointSize: characteristic_name.font.pointSize*0.7
-                textContent: modelData.characteristic_uuid
-                anchors.top: characteristic_name.bottom
+                id: characteristicUuid
+                font.pointSize: characteristicName.font.pointSize * 0.7
+                textContent: box.modelData.characteristic_uuid
+                anchors.top: characteristicName.bottom
                 anchors.topMargin: 5
             }
 
             Label {
-                id: characteristic_value
-                font.pointSize: characteristic_name.font.pointSize*0.7
-                textContent: ("Value: " + modelData.characteristic_value)
+                id: characteristicValue
+                font.pointSize: characteristicName.font.pointSize * 0.7
+                textContent: ("Value: " + box.modelData.characteristic_value)
                 anchors.bottom: characteristicHandle.top
                 horizontalAlignment: Text.AlignHCenter
                 anchors.topMargin: 5
@@ -83,16 +90,16 @@ Rectangle {
 
             Label {
                 id: characteristicHandle
-                font.pointSize: characteristic_name.font.pointSize*0.7
-                textContent: ("Handlers: " + modelData.characteristicHandle)
-                anchors.bottom: characteristic_permission.top
+                font.pointSize: characteristicName.font.pointSize * 0.7
+                textContent: ("Handlers: " + box.modelData.characteristic_handle)
+                anchors.bottom: characteristicPermission.top
                 anchors.topMargin: 5
             }
 
             Label {
-                id: characteristic_permission
-                font.pointSize: characteristic_name.font.pointSize*0.7
-                textContent: modelData.characteristic_permission
+                id: characteristicPermission
+                font.pointSize: characteristicName.font.pointSize * 0.7
+                textContent: box.modelData.characteristic_permission
                 anchors.bottom: parent.bottom
                 anchors.topMargin: 5
                 anchors.bottomMargin: 5
@@ -104,11 +111,11 @@ Rectangle {
         id: menu
         anchors.bottom: parent.bottom
         menuWidth: parent.width
-        menuText: device.update
-        menuHeight: (parent.height/6)
+        menuText: Device.update
+        menuHeight: (parent.height / 6)
         onButtonClick: {
-            pageLoader.source = "qrc:/assets/Services.qml"
-            device.update = "Back"
+            characteristicsPage.showServices()
+            Device.update = "Back"
         }
     }
 }
diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Devices.qml b/examples/bluetooth/lowenergyscanner/Scanner/Devices.qml
new file mode 100644
index 000000000..6e5e85a52
--- /dev/null
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Devices.qml
@@ -0,0 +1,121 @@
+// Copyright (C) 2013 BlackBerry Limited. All rights reserved.
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+pragma ComponentBehavior: Bound
+import QtQuick
+
+Rectangle {
+    id: devicesPage
+
+    property bool deviceState: Device.state
+    signal showServices
+
+    width: 300
+    height: 600
+
+    onDeviceStateChanged: {
+        if (!Device.state)
+            info.visible = false
+    }
+
+    Header {
+        id: header
+        anchors.top: parent.top
+        headerText: {
+            if (Device.state)
+                return "Discovering"
+
+            if (Device.devices_list.length > 0)
+                return "Select a device"
+
+            return "Start Discovery"
+        }
+    }
+
+    Dialog {
+        id: info
+        anchors.centerIn: parent
+        visible: false
+    }
+
+    ListView {
+        id: theListView
+        width: parent.width
+        clip: true
+
+        anchors.top: header.bottom
+        anchors.bottom: connectToggle.top
+        model: Device.devices_list
+
+        delegate: Rectangle {
+            required property var modelData
+            id: box
+            height: 100
+            width: theListView.width
+            color: "lightsteelblue"
+            border.width: 2
+            border.color: "black"
+            radius: 5
+
+            MouseArea {
+                anchors.fill: parent
+                onClicked: {
+                    Device.scan_services(box.modelData.device_address)
+                    showServices()
+                }
+            }
+
+            Label {
+                id: deviceName
+                textContent: box.modelData.device_name
+                anchors.top: parent.top
+                anchors.topMargin: 5
+            }
+
+            Label {
+                id: deviceAddress
+                textContent: box.modelData.device_address
+                font.pointSize: deviceName.font.pointSize * 0.7
+                anchors.bottom: box.bottom
+                anchors.bottomMargin: 5
+            }
+        }
+    }
+
+    Menu {
+        id: connectToggle
+
+        menuWidth: parent.width
+        anchors.bottom: menu.top
+        menuText: {
+            visible = Device.devices_list.length > 0
+            if (Device.use_random_address)
+                return "Address type: Random"
+            else
+                return "Address type: Public"
+        }
+
+        onButtonClick: Device.use_random_address = !Device.use_random_address
+    }
+
+    Menu {
+        id: menu
+        anchors.bottom: parent.bottom
+        menuWidth: parent.width
+        menuHeight: (parent.height / 6)
+        menuText: Device.update
+        onButtonClick: {
+            if (!Device.state) {
+                Device.start_device_discovery()
+                // if start_device_discovery() failed Device.state is not set
+                if (Device.state) {
+                    info.dialogText = "Searching..."
+                    info.visible = true
+                }
+            } else {
+                Device.stop_device_discovery()
+            }
+        }
+    }
+}
diff --git a/examples/bluetooth/lowenergyscanner/assets/Dialog.qml b/examples/bluetooth/lowenergyscanner/Scanner/Dialog.qml
index 99c817e22..75e82642a 100644
--- a/examples/bluetooth/lowenergyscanner/assets/Dialog.qml
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Dialog.qml
@@ -4,7 +4,8 @@
 import QtQuick
 
 Rectangle {
-    width: parent.width/3*2
+    id: dialog
+    width: parent.width / 3 * 2
     height: dialogTextId.height + background.height + 20
     z: 50
     property string dialogText: ""
@@ -18,11 +19,11 @@ Rectangle {
         horizontalAlignment: Text.AlignHCenter
         verticalAlignment: Text.AlignVCenter
         anchors.horizontalCenter: parent.horizontalCenter
-        anchors.top: parent.top;
+        anchors.top: parent.top
         anchors.topMargin: 10
 
         elide: Text.ElideMiddle
-        text: dialogText
+        text: dialog.dialogText
         color: "#363636"
         wrapMode: Text.Wrap
     }
@@ -30,13 +31,18 @@ Rectangle {
     Image {
         id: background
 
-        width:20
-        height:20
+        width: 20
+        height: 20
         anchors.top: dialogTextId.bottom
         anchors.horizontalCenter: dialogTextId.horizontalCenter
         visible: parent.busyImage
-        source: "qrc:/assets/busy_dark.png"
+        source: "assets/busy_dark.png"
         fillMode: Image.PreserveAspectFit
-        NumberAnimation on rotation { duration: 3000; from:0; to: 360; loops: Animation.Infinite}
+        NumberAnimation on rotation {
+            duration: 3000
+            from: 0
+            to: 360
+            loops: Animation.Infinite
+        }
     }
 }
diff --git a/examples/bluetooth/lowenergyscanner/assets/Header.qml b/examples/bluetooth/lowenergyscanner/Scanner/Header.qml
index 7ce8d3d79..c95385dd3 100644
--- a/examples/bluetooth/lowenergyscanner/assets/Header.qml
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Header.qml
@@ -4,6 +4,7 @@
 import QtQuick
 
 Rectangle {
+    id: header
     width: parent.width
     height: 70
     border.width: 1
@@ -15,7 +16,7 @@ Rectangle {
         horizontalAlignment: Text.AlignHCenter
         verticalAlignment: Text.AlignVCenter
         anchors.fill: parent
-        text: headerText
+        text: header.headerText
         font.bold: true
         font.pointSize: 20
         elide: Text.ElideMiddle
diff --git a/examples/bluetooth/lowenergyscanner/assets/Label.qml b/examples/bluetooth/lowenergyscanner/Scanner/Label.qml
index e31156740..e31156740 100644
--- a/examples/bluetooth/lowenergyscanner/assets/Label.qml
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Label.qml
diff --git a/examples/bluetooth/lowenergyscanner/Scanner/Main.qml b/examples/bluetooth/lowenergyscanner/Scanner/Main.qml
new file mode 100644
index 000000000..88600bace
--- /dev/null
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Main.qml
@@ -0,0 +1,31 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+import QtQuick
+import QtQuick.Layouts
+
+Window {
+    id: main
+
+    width: 300
+    height: 600
+    visible: true
+
+    StackLayout {
+        id: pagesLayout
+        anchors.fill: parent
+        currentIndex: 0
+
+        Devices {
+            onShowServices: pagesLayout.currentIndex = 1
+        }
+        Services {
+            onShowDevices: pagesLayout.currentIndex = 0
+            onShowCharacteristics: pagesLayout.currentIndex = 2
+        }
+        Characteristics {
+            onShowDevices: pagesLayout.currentIndex = 0
+            onShowServices: pagesLayout.currentIndex = 1
+        }
+    }
+}
diff --git a/examples/bluetooth/lowenergyscanner/assets/Menu.qml b/examples/bluetooth/lowenergyscanner/Scanner/Menu.qml
index f32c7820c..ef69c895e 100644
--- a/examples/bluetooth/lowenergyscanner/assets/Menu.qml
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Menu.qml
@@ -5,11 +5,12 @@
 import QtQuick
 
 Rectangle {
+    id: menu
 
     property real menuWidth: 100
     property real menuHeight: 50
     property string menuText: "Search"
-    signal buttonClick()
+    signal buttonClick
 
     height: menuHeight
     width: menuWidth
@@ -28,7 +29,7 @@ Rectangle {
             horizontalAlignment: Text.AlignHCenter
             verticalAlignment: Text.AlignVCenter
             anchors.fill: parent
-            text: menuText
+            text: menu.menuText
             elide: Text.ElideMiddle
             color: "#E3E3E3"
             wrapMode: Text.WordWrap
@@ -47,7 +48,7 @@ Rectangle {
             }
 
             onClicked: {
-                buttonClick()
+                menu.buttonClick()
             }
         }
     }
diff --git a/examples/bluetooth/lowenergyscanner/assets/Services.qml b/examples/bluetooth/lowenergyscanner/Scanner/Services.qml
index 3f1bd6b96..70326242e 100644
--- a/examples/bluetooth/lowenergyscanner/assets/Services.qml
+++ b/examples/bluetooth/lowenergyscanner/Scanner/Services.qml
@@ -2,9 +2,15 @@
 // Copyright (C) 2023 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
+pragma ComponentBehavior: Bound
 import QtQuick
 
 Rectangle {
+    id: servicesPage
+
+    signal showCharacteristics
+    signal showDevices
+
     width: 300
     height: 600
 
@@ -12,9 +18,9 @@ Rectangle {
         // Loading this page may take longer than QLEController
         // stopping with an error, go back and readjust this view
         // based on controller errors
-        if (device.controller_error) {
-            info.visible = false;
-            menu.menuText = device.update
+        if (Device.controller_error) {
+            info.visible = false
+            menu.menuText = Device.update
         }
     }
 
@@ -28,20 +34,20 @@ Rectangle {
         id: info
         anchors.centerIn: parent
         visible: true
-        dialogText: "Scanning for services...";
+        dialogText: "Scanning for services..."
     }
 
     Connections {
-        target: device
+        target: Device
         function onservices_updated() {
             if (servicesview.count === 0)
                 info.dialogText = "No services found"
             else
-                info.visible = false;
+                info.visible = false
         }
 
-        function onDisconnected() {
-            pageLoader.source = "qrc:/assets/main.qml"
+        function ondisconnected() {
+            servicesPage.showDevices()
         }
     }
 
@@ -50,47 +56,45 @@ Rectangle {
         width: parent.width
         anchors.top: header.bottom
         anchors.bottom: menu.top
-        model: device.services_list
+        model: Device.servicesList
         clip: true
 
         delegate: Rectangle {
-            id: servicebox
-            height:100
+            required property var modelData
+            id: box
+            height: 100
             color: "lightsteelblue"
             border.width: 2
             border.color: "black"
             radius: 5
             width: servicesview.width
-            Component.onCompleted: {
-                info.visible = false
-            }
 
             MouseArea {
                 anchors.fill: parent
                 onClicked: {
-                    pageLoader.source = "qrc:/assets/Characteristics.qml";
-                    device.connect_to_service(modelData.service_uuid);
+                    Device.connectToService(box.modelData.service_uuid)
+                    servicesPage.showCharacteristics()
                 }
             }
 
             Label {
-                id: service_name
-                textContent: modelData.service_name
+                id: serviceName
+                textContent: box.modelData.service_name
                 anchors.top: parent.top
                 anchors.topMargin: 5
             }
 
             Label {
-                textContent: modelData.service_type
-                font.pointSize: service_name.font.pointSize * 0.5
-                anchors.top: service_name.bottom
+                textContent: box.modelData.service_type
+                font.pointSize: serviceName.font.pointSize * 0.5
+                anchors.top: serviceName.bottom
             }
 
             Label {
-                id: service_uuid
-                font.pointSize: service_name.font.pointSize * 0.5
-                textContent: modelData.service_uuid
-                anchors.bottom: servicebox.bottom
+                id: serviceUuid
+                font.pointSize: serviceName.font.pointSize * 0.5
+                textContent: box.modelData.service_uuid
+                anchors.bottom: box.bottom
                 anchors.bottomMargin: 5
             }
         }
@@ -100,12 +104,12 @@ Rectangle {
         id: menu
         anchors.bottom: parent.bottom
         menuWidth: parent.width
-        menuText: device.update
-        menuHeight: (parent.height/6)
+        menuText: Device.update
+        menuHeight: (parent.height / 6)
         onButtonClick: {
-            device.disconnect_from_device()
-            pageLoader.source = "qrc:/assets/main.qml"
-            device.update = "Search"
+            Device.disconnect_from_device()
+            servicesPage.showDevices()
+            Device.update = "Search"
         }
     }
 }
diff --git a/examples/bluetooth/lowenergyscanner/assets/busy_dark.png b/examples/bluetooth/lowenergyscanner/Scanner/assets/busy_dark.png
index 3a1059531..3a1059531 100644
--- a/examples/bluetooth/lowenergyscanner/assets/busy_dark.png
+++ b/examples/bluetooth/lowenergyscanner/Scanner/assets/busy_dark.png
diff --git a/examples/bluetooth/lowenergyscanner/Scanner/qmldir b/examples/bluetooth/lowenergyscanner/Scanner/qmldir
new file mode 100644
index 000000000..0adf6fb19
--- /dev/null
+++ b/examples/bluetooth/lowenergyscanner/Scanner/qmldir
@@ -0,0 +1,10 @@
+module Scanner
+typeinfo scanner.qmltypes
+Characteristics 1.0 Characteristics.qml
+Devices 1.0 Devices.qml
+Dialog 1.0 Dialog.qml
+Header 1.0 Header.qml
+Label 1.0 Label.qml
+Main 1.0 Main.qml
+Menu 1.0 Menu.qml
+Services 1.0 Services.qml
diff --git a/examples/bluetooth/lowenergyscanner/assets/main.qml b/examples/bluetooth/lowenergyscanner/assets/main.qml
deleted file mode 100644
index 01bf63cd8..000000000
--- a/examples/bluetooth/lowenergyscanner/assets/main.qml
+++ /dev/null
@@ -1,115 +0,0 @@
-// Copyright (C) 2013 BlackBerry Limited. All rights reserved.
-// Copyright (C) 2023 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
-
-import QtQuick
-
-Rectangle {
-    id: back
-    width: 300
-    height: 600
-    property bool deviceState: device.state
-    onDevicestate_changed: {
-        if (!device.state)
-            info.visible = false;
-    }
-
-    Header {
-        id: header
-        anchors.top: parent.top
-        headerText: "Start Discovery"
-    }
-
-    Dialog {
-        id: info
-        anchors.centerIn: parent
-        visible: false
-    }
-
-    ListView {
-        id: theListView
-        width: parent.width
-        clip: true
-
-        anchors.top: header.bottom
-        anchors.bottom: connectToggle.top
-        model: device.devices_list
-
-        delegate: Rectangle {
-            id: box
-            height:100
-            width: theListView.width
-            color: "lightsteelblue"
-            border.width: 2
-            border.color: "black"
-            radius: 5
-
-            Component.onCompleted: {
-                info.visible = false;
-                header.headerText = "Select a device";
-            }
-
-            MouseArea {
-                anchors.fill: parent
-                onClicked: {
-                    device.scan_services(modelData.device_address);
-                    pageLoader.source = "qrc:/assets/Services.qml"
-                }
-            }
-
-            Label {
-                id: device_name
-                textContent: modelData.device_name
-                anchors.top: parent.top
-                anchors.topMargin: 5
-            }
-
-            Label {
-                id: device_address
-                textContent: modelData.device_address
-                font.pointSize: device_name.font.pointSize*0.7
-                anchors.bottom: box.bottom
-                anchors.bottomMargin: 5
-            }
-        }
-    }
-
-    Menu {
-        id: connectToggle
-
-        menuWidth: parent.width
-        anchors.bottom: menu.top
-        menuText: { if (device.devices_list.length)
-                        visible = true
-                    else
-                        visible = false
-                    if (device.use_random_address)
-                        "Address type: Random"
-                    else
-                        "Address type: Public"
-        }
-
-        onButtonClick: device.use_random_address = !device.use_random_address;
-    }
-
-    Menu {
-        id: menu
-        anchors.bottom: parent.bottom
-        menuWidth: parent.width
-        menuHeight: (parent.height/6)
-        menuText: device.update
-        onButtonClick: {
-            device.start_device_discovery();
-            // if start_device_discovery() failed device.state is not set
-            if (device.state) {
-                info.dialogText = "Searching...";
-                info.visible = true;
-            }
-        }
-    }
-
-    Loader {
-        id: pageLoader
-        anchors.fill: parent
-    }
-}
diff --git a/examples/bluetooth/lowenergyscanner/device.py b/examples/bluetooth/lowenergyscanner/device.py
index d4a2300bc..e69a8450e 100644
--- a/examples/bluetooth/lowenergyscanner/device.py
+++ b/examples/bluetooth/lowenergyscanner/device.py
@@ -4,12 +4,17 @@ import warnings
 from PySide6.QtBluetooth import (QBluetoothDeviceDiscoveryAgent, QLowEnergyController,
                                  QBluetoothDeviceInfo, QBluetoothUuid, QLowEnergyService)
 from PySide6.QtCore import QObject, Property, Signal, Slot, QTimer, QMetaObject, Qt
+from PySide6.QtQml import QmlElement, QmlSingleton
 
 from deviceinfo import DeviceInfo
 from serviceinfo import ServiceInfo
 from characteristicinfo import CharacteristicInfo
 
+QML_IMPORT_NAME = "Scanner"
+QML_IMPORT_MAJOR_VERSION = 1
 
+@QmlElement
+@QmlSingleton
 class Device(QObject):
 
     devices_updated = Signal()
@@ -108,7 +113,7 @@ class Device(QObject):
         self.update = "Back\n(Connecting to device...)"
 
         if self.controller and (self._previousAddress != self.currentDevice.device_address):
-            self.controller.disconnect_from_device()
+            self.controller.disconnectFromDevice()
             del self.controller
             self.controller = None
 
@@ -167,7 +172,7 @@ class Device(QObject):
         # device scan progress
 
         if self.controller.state() != QLowEnergyController.UnconnectedState:
-            self.controller.disconnect_from_device()
+            self.controller.disconnectFromDevice()
         else:
             self.device_disconnected()
 
@@ -266,3 +271,9 @@ class Device(QObject):
 
         self.characteristic_updated.emit()
 
+    @Slot()
+    def stop_device_discovery(self):
+        if self.discovery_agent.isActive():
+            self.discovery_agent.stop()
+
+
diff --git a/examples/bluetooth/lowenergyscanner/main.py b/examples/bluetooth/lowenergyscanner/main.py
index 58eb3175b..dfbff97b3 100644
--- a/examples/bluetooth/lowenergyscanner/main.py
+++ b/examples/bluetooth/lowenergyscanner/main.py
@@ -5,29 +5,23 @@
 
 
 import sys
-import os
 
-from PySide6.QtCore import QUrl
+from PySide6.QtCore import QCoreApplication
 from PySide6.QtGui import QGuiApplication
-from PySide6.QtQuick import QQuickView
+from PySide6.QtQml import QQmlApplicationEngine
 
 from device import Device
 from pathlib import Path
 
-import rc_resources
-
 if __name__ == '__main__':
     app = QGuiApplication(sys.argv)
-    d = Device()
-    view = QQuickView()
-    view.rootContext().setContextProperty("device", d)
-    src_dir = Path(__file__).resolve().parent
-    view.engine().addImportPath(os.fspath(src_dir))
-    view.engine().quit.connect(view.close)
-    view.setSource(QUrl.fromLocalFile(":/assets/main.qml"))
-    view.setResizeMode(QQuickView.SizeRootObjectToView)
-    view.show()
-    res = app.exec()
-    del view
-    sys.exit(res)
+    engine = QQmlApplicationEngine()
+    engine.addImportPath(Path(__file__).parent)
+    engine.loadFromModule("Scanner", "Main")
+
+    if not engine.rootObjects():
+        sys.exit(-1)
 
+    ex = QCoreApplication.exec()
+    del engine
+    sys.exit(ex)
diff --git a/examples/bluetooth/lowenergyscanner/rc_resources.py b/examples/bluetooth/lowenergyscanner/rc_resources.py
deleted file mode 100644
index f6e1b10fe..000000000
--- a/examples/bluetooth/lowenergyscanner/rc_resources.py
+++ /dev/null
@@ -1,816 +0,0 @@
-# Resource object code (Python 3)
-# Created by: object code
-# Created by: The Resource Compiler for Qt version 6.4.0
-# WARNING! All changes made in this file will be lost!
-
-from PySide6 import QtCore
-
-qt_resource_data = b"\
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-/\
-/ Copyright (C) \
-2013 BlackBerry \
-Limited. All rig\
-hts reserved.\x0a//\
- Copyright (C) 2\
-023 The Qt Compa\
-ny Ltd.\x0a// SPDX-\
-License-Identifi\
-er: LicenseRef-Q\
-t-Commercial OR \
-BSD-3-Clause\x0a\x0aim\
-port QtQuick 2.0\
-\x0a\x0aRectangle {\x0a  \
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-  Component.onCo\
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diff --git a/examples/bluetooth/lowenergyscanner/resources.qrc b/examples/bluetooth/lowenergyscanner/resources.qrc
deleted file mode 100644
index c24866534..000000000
--- a/examples/bluetooth/lowenergyscanner/resources.qrc
+++ /dev/null
@@ -1,12 +0,0 @@
-<RCC>
-    <qresource>
-        <file>assets/Characteristics.qml</file>
-        <file>assets/main.qml</file>
-        <file>assets/Menu.qml</file>
-        <file>assets/Services.qml</file>
-        <file>assets/Header.qml</file>
-        <file>assets/Dialog.qml</file>
-        <file>assets/Label.qml</file>
-        <file>assets/busy_dark.png</file>
-    </qresource>
-</RCC>