Detecting WiFi network

ashajg

Re: Qt - Connecting to wireless networks

Hi guys

I am trying to write code which will detect WiFi.

My program:
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QNetworkConfiguration>
#include <QNetworkConfigurationManager>
#include <QNetworkSession>
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

QGuiApplication app(argc, argv);

QQmlApplicationEngine engine;

//////////////////////////////////////
QNetworkConfiguration cfg;
QNetworkConfigurationManager ncm;
auto nc = ncm.allConfigurations();

for (auto &x : nc)
{qDebug()<< "CHECK1";
if (x.bearerType() == QNetworkConfiguration::BearerWLAN)
{  qDebug ()<<"CHECK2";
   qDebug() <<"WIFI is"<<x.name();
}
}
/////////////////////////////////////

engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
if (engine.rootObjects().isEmpty())
    return -1;

return app.exec();

}

I am unable to get WiFi names..

Result:

Starting C:\Ashish\QTPROJECT\build-untitled-Desktop_Qt_5_11_0_MinGW_32bit-Debug\debug\WiFi.exe...
QML debugging is enabled. Only use this in a safe environment.
CHECK1

It seems program control is not entering inside if (x.bearerType() == QNetworkConfiguration::BearerWLAN) loop.

In Pro file i have added :QT += quick network
CONFIG += c++11
TARGET = WiFi

please help!!!
Thanks and Regards
Ashish

koahnig

@ashajg

Try this to see what is available.

for (auto &x : nc)
{
    qDebug()<< "CHECK1  " << x.bearerType();
    if (x.bearerType() == QNetworkConfiguration::BearerWLAN)
   {  qDebug ()<<"CHECK2";
      qDebug() <<"WIFI is"<<x.name();
   }
}

ashajg

Hi @koahnig

I tried above code

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QNetworkConfiguration>
#include <QNetworkConfigurationManager>
#include <QNetworkSession>
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QGuiApplication app(argc, argv);
QQmlApplicationEngine engine;
////////////////////////////////////////////////
QStringList WiFisList;
QNetworkConfiguration cfg;
QNetworkConfigurationManager ncm;
auto nc = ncm.allConfigurations();

    for (auto &x : nc)
    {
        qDebug()<< "CHECK1  " << x.bearerType();
        if (x.bearerType() == QNetworkConfiguration::BearerWLAN)
       {  qDebug ()<<"CHECK2";
          qDebug() <<"WIFI is"<<x.name();
       }
    }
/////////////////////////////////////
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
if (engine.rootObjects().isEmpty())
    return -1;

return app.exec();

}

Result:
Starting C:\Ashish\QTPROJECT\build-wifi-Desktop_Qt_5_11_0_MinGW_32bit-Debug\debug\WiFi.exe...
QML debugging is enabled. Only use this in a safe environment.
CHECK1 1

Still not getting wifi names

ashajg

Hi @koahnig

CHECK1 1<- this is returned by x.bearerType

SGaist

Hi,

@ashajg said in Detecting WiFi network:

Hi @koahnig

CHECK1 1<- this is returned by x.bearerType

From the documentation: QNetworkConfiguration::BearerEthernet

ashajg

hi @SGaist

yes its Ethernet....

Dont know why it is getting set to ethernet and not working for wifi......

for this code are some plugins required??

SGaist

Might be a silly question: is your WiFi device enabled ?

ashajg

YES my device is enabled

Eeli K

I'm loosing my nerves with this, too. I didn't notice this topic but wrote in the General section: https://forum.qt.io/topic/96157/how-to-get-the-current-ssid-what-are-qnetworkconfigurations. I just don't understand what these classes are even supposed to do.

ashajg

@SGaist

What all things can i try to solve this problem??
Is there a problem in code ??

SGaist

A call to updateConfigurations is likely required.

ashajg

ok i ll try that.

ashajg

@SGaist
I tried but nothing happened

I have found this
https://forum.qt.io/topic/47384/qt-connecting-to-wireless-networks/4

what is qgenericbearer.dll and qnativewifibearer.dll and is it needed for this program??

SGaist

The bearer plugins are responsible for providing the backend to the system networking capabilities so yes they are needed but the names are not the same for all the platforms.

ashajg

Ok @SGaist

In my Qt , I checked and found that in plugin/bearer I don't have qnativewifibearer.....

Do I just need to download it and paste it in my Qt plugin folder??

SGaist

What plugins do you have ?

Eeli K

It looks like QNetworkConfigurationManager can't be trusted nowadays, see for example https://bugreports.qt.io/browse/QTBUG-68613 and https://bugreports.qt.io/browse/QTBUG-65586.

ashajg

I have qgenericbearer.dll only @SGaist

ashajg

Hi @Eeli-K what else can I use other than QNetworkConfigurationManager if I want to use unpaid version of Qt...

Eeli K

I think you have to use platform-native APIs instead of Qt.