Qt (C++) Pass Variable from Dialog to main.cpp - c++

Question

When i start my Program a Dialog-Window pops up and asks me to enter a name. Once i've entered my Name and press the Button it closes the Dialog and opens the main window.
My question is how i get the variable/ Name i just set in the Dialog into another class / my main.cpp
Main.cpp
#include "mainwindow.h"
#include <QApplication>
#include <QtDebug>
#include <QtNetwork>
#include <sstream>
#include "mydialog.h"
using namespace std;
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
// Open Dialog
MyDialog mDialog;
mDialog.setModal(true);
mDialog.exec();
//Open Main Window
GW2::MainWindow w;
w.show();
return a.exec();
}
mydialog.cpp
#include "mydialog.h"
#include "ui_mydialog.h"
#include <QDebug>
using namespace std;
MyDialog::MyDialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::MyDialog)
{
ui->setupUi(this);
}
MyDialog::~MyDialog()
{
delete ui;
}
void MyDialog::on_pushButton_clicked()
{
QString MYNAME = ui->lineEdit->text();
close();
}
I can get MYNAME here that works after i press the Button but i need to pass the Variable...
mydialog.h
#ifndef MYDIALOG_H
#define MYDIALOG_H
#include <QDialog>
#include <QString>
namespace Ui {
class MyDialog;
}
class MyDialog : public QDialog
{
Q_OBJECT
public:
explicit MyDialog(QWidget *parent = 0);
~MyDialog();
private slots:
void on_pushButton_clicked();
private:
Ui::MyDialog *ui;
};
#endif // MYDIALOG_Hs
I tried using google and search function but didn'T find anything that worked on my project. Hope you can help me. Cheers

Answer 1

Add this in MyDialog:
QString MyDialog::getName()
{
return ui->lineEdit->text();
}
Then do:
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
// Open Dialog
MyDialog mDialog;
mDialog.setModal(true);
mDialog.exec();
// retrieve the name
QString name = mDialog.getName();
//Open Main Window
GW2::MainWindow w;
w.show();
return a.exec();
}
Note that the dialog could be canceled. You should call accept() rather than close() from on_pushButton_clicked() and later test if the dialog was accepted or not:
if ( mDialog.exec() == QDialog::Accepted )
{
QString name = mDialog.getName();
...