The correct way to use the “HorizontalStackedBarChart” as a clase

Josz

Hello,
After testing the cited example https://doc.qt.io/qt-5.11/qtcharts-horizontalstackedbarchart-main-cpp.html , I tried to use it like a class, to freely insert into a MainWindow.
The problem was that I couldn’t use the four last lines for create the chart:
QMainWindow window;
window.setCentralWidget(chartView);
window.resize(420, 300);
window.show();

So I returned a pointer from chartView in mybars.cpp through QChartView *myBars::returnChart()
mybars.cpp: https://pastebin.com/K4EkVz5R
And in mainWindow.cpp I did setCentralWidget(bars->returnChart());

#include "mainwindow.h"
#include "ui_mainwindow.h"


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent), ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    setFixedSize(1024,768);
    bars = new myBars(this);
    bars->show();
    setCentralWidget(bars->returnChart());
}

MainWindow::~MainWindow()
{
    delete ui;
}

That works, but, I wonder me, Is that the right method to use it as clase? Is there a better method to insert the chart into main window?

Thanks in advance