HeartRate Game example: general clean-up

C++ code cleanup:
* Fix include headers
* Minor code-style improvements
* Silence the warning about an uncreatable type by explicitly using
  QML_UNCREATABLE. We do not create the type in QML anyway.
* Do not limit Windows platform to simulator mode. The example works
  perfectly on Windows.

Build-system improvements:
* Use qt_standard_project_setup() and PRIVATE linking in CMake

Docs:
* Add Connectivity category
* Link to the documentation page which gives a full example overview

Task-number: QTBUG-111972
Fixes: QTBUG-112194
Pick-to: 6.5 6.5.0
Change-Id: I6e50d1a3e9219afbf010d6471e8f7eb802c2ef00
Reviewed-by: Juha Vuolle <juha.vuolle@qt.io>

1 files changed, 7 insertions, 5 deletions

diff --git a/examples/bluetooth/heartrate-game/deviceinfo.cpp b/examples/bluetooth/heartrate-game/deviceinfo.cpp
index e34d0993..55dcf0e8 100644
--- a/examples/bluetooth/heartrate-game/deviceinfo.cpp
+++ b/examples/bluetooth/heartrate-game/deviceinfo.cpp
@@ -1,11 +1,13 @@
 // Copyright (C) 2022 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
-#include "heartrate-global.h"
 #include "deviceinfo.h"
+#include "heartrate-global.h"
+
+#include <QtBluetooth/qbluetoothaddress.h>
+#include <QtBluetooth/qbluetoothuuid.h>
 
-#include <QBluetoothAddress>
-#include <QBluetoothUuid>
+using namespace Qt::StringLiterals;
 
 DeviceInfo::DeviceInfo(const QBluetoothDeviceInfo &info):
     m_device(info)
@@ -20,14 +22,14 @@ QBluetoothDeviceInfo DeviceInfo::getDevice() const
 QString DeviceInfo::getName() const
 {
     if (simulator)
-        return "Demo device";
+        return u"Demo device"_s;
     return m_device.name();
 }
 
 QString DeviceInfo::getAddress() const
 {
     if (simulator)
-        return "00:11:22:33:44:55";
+        return u"00:11:22:33:44:55"_s;
 #ifdef Q_OS_DARWIN
     // workaround for Core Bluetooth:
     return m_device.deviceUuid().toString();