Unsolved How to use on-board raspberry-pi bluetooth with qt creator?

[SHUBHAM SINGH RAO]

Hi there
Problem Statement - I am using Qt Creator 3.2.1 (IDE Qt 5.3.2) and I am trying to control on-board bluetooth on raspberry pi 3 B+ using Qt creator
I want to scan bluetooth devices and connect to them using Qt

My work -

I have included QT += bluetooth library in .pro file

My code -

#include <qbluetoothlocaldevice.h>
#include<qbluetoothdevicediscoveryagent.h>
#include<qbluetoothaddress.h>

void MainWindow::startScan()
{discoveryAgent->start();
}

void MainWindow::on_discoverable_clicked(bool checked)
{
if (checked)
{
localDevice>setHostMode(QBluetoothLocalDevice::HostDiscoverable);
}
else
{
localDevice>setHostMode(QBluetoothLocalDevice::HostConnectable);
}
}

void MainWindow::on_power_clicked(bool checked)
{
if (checked)
{ localDevice->powerOn(); }
else
{
localDevice>setHostMode(QBluetoothLocalDevice::HostPoweredOff);
}
}

I took the help from this link -
https://code.qt.io/cgit/qt/qtconnectivity.git/tree/examples/bluetooth/btscanner?h=5.13
But I am not able to implement that. I am quite new in qt bluetooth

My Requiement -
I need the guidance how could I proceed in Qt bluetooth to control raspberry pi - on board bluetooth