How to Set existing qml UI to widget container in QT? [closed] - qt

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I had Widget as you see in this picture below and I want to set my qml file to widget container which is shown in the above picture.
how should I do this?
here is my code :
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QQuickView>
#include <QWidget>
#include <QVBoxLayout>
QT_BEGIN_NAMESPACE
namespace Ui
{
class MainWindow;
}
QT_END_NAMESPACE
class MainWindow: public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private:
Ui::MainWindow *ui;
QQuickView *view;
QWidget *qmlWidgt;
};
#endif // MAINWINDOW_H
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent):
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
view = new QQuickView(QUrl(QLatin1String("qrc:/wave.qml")));
qmlWidgt = QWidget::createWindowContainer(view);
// setCentralWidget(qmlWidgt)
}
MainWindow::~MainWindow()
{
delete ui;
}

Answer 1

As I understand from your question I also create your UI like this:
then I create qml UI for example Red rectangle like this:
main.qml
import QtQuick 2.0
Item {
anchors.fill: parent
Rectangle
{
id:tmpRect
anchors.fill: parent
color: "red"
}
}
In mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QQuickView>
QT_BEGIN_NAMESPACE
namespace Ui
{
class MainWindow;
}
QT_END_NAMESPACE
class MainWindow: public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private:
Ui::MainWindow *ui;
QQuickView *view;
QWidget *qmlWidgt;
};
#endif // MAINWINDOW_H
In mainwindow.cpp :
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent):
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
view = new QQuickView(QUrl(QLatin1String("qrc:/main.qml")));
qmlWidgt = QWidget::createWindowContainer(view, this);
ui->widget->layout()->addWidget(qmlWidgt);
}
MainWindow::~MainWindow()
{
delete ui;
}
output :