Problems Adding Menu to Menu Bar on Mac

[jFadaie]

I have been having problems adding a menu item to the built in menu bar in a Qt desktop application. I copied the code provided in the QMainWindow class reference documentation for creating a menu to a very simple application. Unfortunately, it did not work. I am simply trying to add a "File" menu to the menu bar. I am running Mac OSX 10.9.3 and Qt Creator 5.3.1.

The screenshots of my code are below. I tried both the uncommented and commented code in the mainwindow.cpp source.

MainWindow.cpp:
@#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
//myMenuBar = menuBar();
//fileMenu = myMenuBar -> addMenu(tr("&File"));

fileMenu = menuBar() -> addMenu(tr("&File"));

ui->setupUi(this);

}

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

mainwindow.h:

@#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QMenuBar>
#include <QMenu>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();

private:
Ui::MainWindow ui;
QMenuBar myMenuBar;
QMenu* fileMenu;
};

#endif // MAINWINDOW_H
@

main.cpp:

@#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();

return a.exec();

}
@

ComeOnMenuBar.pro:

@#-------------------------------------------------

Project created by QtCreator 2014-08-12T02:28:33

#-------------------------------------------------

QT += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = ComeOnMenuBar
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp

HEADERS += mainwindow.h

FORMS += mainwindow.ui
@

Any help would be really appreciated! Thank you!

Note: I know using setNativeMenuBar(false) works, but I would like the mac os native menu bar to work: the one that is displayed in the top-most left corner.

[sierdzio]

You need to write that code after ui->setupUi(this) call. Otherwise, the UI is not ready for the changes.