QDialog CloseEvent

Ketan__Patel__0011

Hello Friends And Qt Experts

I Want to connect close Event for my QDialog Box
Here My Code::

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

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
}

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

void MainWindow::closeEvent(QCloseEvent *event)
{
    if(event->type() == QEvent::Close)
    {
        event->ignore();
        QMessageBox::information(this, " ", "Close Event Call");
    }
}

void MainWindow::on_pushButton_clicked()
{
    Dlg = new QDialog(this); /// I want to Disable Alt+F4 Key
    Dlg->installEventFilter(this);
    Dlg->setMinimumWidth(250);
    Dlg->setMaximumWidth(250);
    Dlg->setMinimumHeight(250);
    Dlg->setMaximumHeight(250);
    Dlg->show();
}

i want to disable Alt+F4 Key for my QDialog Box

right now when my QDialog Box is open that time i am pressing Alt+F4 Key and my QDialog Box is closed.
but when i try to close my MainWindow using Alt+F4 Key that time i got My Message From closeEvent Function

Please Help me to solve this problem.
Thanks in Advance.

n-2204

https://stackoverflow.com/questions/10369826/how-can-i-disable-alt-f4-window-closing-using-qt