LineEdit only allow specific keyPressEvent

[kocka]

I am using win10 and qt5.

I would like to disable everything if I press a button on the keyboard except the moving the cursor. When I pressed right or left arrow I would like to move the cursor.

LineEdit.h

#pragma once

#include <QLineEdit>
#include <QKeyEvent>
#include <QDebug>

class LineEdit : public QLineEdit {

    Q_OBJECT

public:

    LineEdit(QWidget* parent = nullptr)
        : QLineEdit(parent) {}

    virtual void keyPressEvent(QKeyEvent* event) override {

        if(event->key() == Qt::Key_Left || event->key() == Qt::Key_Right) {
            event->accept();
            qDebug() << "accept";
        }
        else {
            event->ignore();
            qDebug() << "ignore";
        }

    }

};

mainwindow.cpp

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

#include "LineEdit.h"

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

    QWidget* window = new QWidget;

    LineEdit* line = new LineEdit(window);
    line->setText("abcdefgh");

    setCentralWidget(window);
}

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

I get the appropiate qDebug output, so that cannot be the problem.

[eyllanesc]

@kocka Change to:

if(event->key() == Qt::Key_Left || event->key() == Qt::Key_Right) {
        QLineEdit::keyPressEvent(event);
        return;
}