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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc
** All rights reserved.
** For any questions to Digia, please use the contact form at
** http://www.qt.io
**
** This file is part of Qt Enterprise Embedded.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** the contact form at http://www.qt.io
**
****************************************************************************/
/*!
\title Getting Started with B2Qt.Wifi in C++
\example wifi/wifi-cpp
\ingroup wifi-examples
\brief Guide to getting started with B2Qt.Wifi using C++.
\section1 Preparing the Application
Use the following \c include statement to access the C++ classes:
\code
#include <B2QtWifi>
\endcode
Before building your application, add the following statement to your
\c .pro file to link against the B2Qt.Wifi library:
\code
QT += b2qtwifi
\endcode
This guide will demonstrate how to create a Qt Widget-based application
that utilizes the B2Qt.Wifi API to set up a wifi network connection. We
will start by looking at how to scan for wifi access points, and how to
display and process this data in the application. At the end of the guide
we will show how to connect directly to a known wifi network configuration.
\image wifi-cpp.jpg
\section1 Listing Wifi Networks
First we need to set up QListView widget which we will use to list wifi
networks that can be detected by the device. The detected network access
points are packed as a list-based data model and can be retrieved using
QWifiManager::networks. Here we also set a custom item delegate and
connect to two QWifiManager signals.
\snippet wifi/wifi-cpp/main.cpp 0
\section1 Creating a Delegate
The Wifi network model has many data roles that describe the different
properties of Wifi network. This data can be used by an application to list
detailed network information and/or to create QWifiConfiguration objects.
In this example we are interested in the network name. In the paint()
method we check if the network name is equal to the currently active
network connection, and append appropriate network state information.
\snippet wifi/wifi-cpp/main.cpp 1
\section1 Connecting to a Selected Network
On press of the \uicontrol Connect button, connetToNetwork() slot gets
invoked. In this slot we query network properties for the selected network
and create a QWifiConfiguration object, which we later pass to the
QWifiManager::connect function to set up a connection. During this
operation any changes in the network state is reported by QWifiManager
asynchronously.
\snippet wifi/wifi-cpp/main.cpp 2
We use QWifiManager::NetworkState change event handler to trigger the
repainting of the delegate. This way, we can present a current network
state to the user.
\snippet wifi/wifi-cpp/main.cpp 4
\section1 Connecting To a Known Network
If you already know the network configuration beforehand, you can skip the
network scanning, listing and selection steps. This can be a valid use-case
for devices that do not change their physical location.
QWifiManager::BackendState change events are reported asynchronously, so we
must connect the signal to a slot that connects to the network access point
after the backend initialization is complete.
\snippet wifi/wifi-cpp/main.cpp 3
*/
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