Showing my mainwindow from a controller class

[maxmotor]

Hello Qt devs!

When running the code shown below, everything works fine.

@#include "mainmenu.h"

#include <QtGui>
#include <QApplication>
#include <QThread>

int main(int argc, char *argv[]) {

QApplication a(argc, argv);
MainMenu w;
w.show();
return a.exec();
}@

But - I would like to have a controller class taking care of all windows. I tried this:

@#include <QtGui>
#include <QApplication>
#include <QThread>
#include "Controller.h"

int main(int argc, char *argv[]) {

QApplication a(argc, argv);
Controller();
return a.exec();
}@

My controller.cpp:

@#include "Controller.h"

Controller::Controller() {
w.show();

}@

I include the "MainMenu.h" and declare "w" in my controller.h file.

This won't work for me though. Is this not allowed?

Thank you for your time!

[fluca1978]

I guess there is a stack/reference-initialization problem. Have you tried declaring w as a dynamic allocated memory using a pointer? The following works for me (not knowing what a MainMenu is I used a label):

@QLabel* ll = new QLabel();
QLabel& l = *ll;
l.setText("HELLO");
l.show();@

I placed it in a controller class as you do and it worked.

[bodzio131]

Controller(); //you create temporary object here, it's deleted before you run main loop :), should be something like Controller c;

[maxmotor]

Thank you both of you! ;)

Controller c; and it worked.

Thank you so much for your time!