Event Filter doesnt work as expected [Solved]

[Coderx]

I tried to override the keypressevent for my lineEdit control using eventFiltering.
but when i run my application it doesnt do anything! i even set a break point inside the eventFiltering method , but i never get there!!?
This is my source codes :
MainWindow.h
@
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

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

protected:
bool eventFilter( QObject* sender, QEvent* event);

private:
Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H
@

MainWindow.cpp:

@
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "QMessageBox"
#include <QKeyEvent>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}

bool MainWindow::eventFilter(QObject *sender, QEvent event)
{
if (sender == ui->lineEdit)
{
if(event->type()== QEvent::KeyPress)
{
QKeyEvent * keyEvent = (QKeyEvent)(event);
if( keyEvent->key() == Qt::Key_Control)
{
QMessageBox::information(this,"Salam","Test");
return true;
}else
{
return false;
}
}
}
return QWidget::eventFilter(sender,event);
}

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

[SGaist]

Hi and welcome to devnet,

You didn't install the eventFilter. Have a look at "this":http://qt-project.org/doc/qt-4.8/qobject.html#installEventFilter

[Coderx]

Thank you very much :)

[SGaist]

You're welcome !

Don't forget to update the thread's title to solved, other forum users will know that a solution has been found :)

[Coderx]

done :)
the subject is edited and solved is added :)