diff --git a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/lab2-3-5_KeyEvent.pro b/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/lab2-3-5_KeyEvent.pro
deleted file mode 100644
index b915c09..0000000
--- a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/lab2-3-5_KeyEvent.pro
+++ /dev/null
@@ -1,24 +0,0 @@
-QT       += core gui
-
-greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
-
-CONFIG += c++17
-
-# You can make your code fail to compile if it uses deprecated APIs.
-# In order to do so, uncomment the following line.
-#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
-
-SOURCES += \
-    main.cpp \
-    mainwindow.cpp
-
-HEADERS += \
-    mainwindow.h
-
-FORMS += \
-    mainwindow.ui
-
-# Default rules for deployment.
-qnx: target.path = /tmp/$${TARGET}/bin
-else: unix:!android: target.path = /opt/$${TARGET}/bin
-!isEmpty(target.path): INSTALLS += target
diff --git a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/main.cpp b/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/main.cpp
deleted file mode 100644
index fd3e533..0000000
--- a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/main.cpp
+++ /dev/null
@@ -1,11 +0,0 @@
-#include "mainwindow.h"
-
-#include <QApplication>
-
-int main(int argc, char *argv[])
-{
-    QApplication a(argc, argv);
-    MainWindow w;
-    w.show();
-    return a.exec();
-}
diff --git a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.cpp b/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.cpp
deleted file mode 100644
index fcc48fa..0000000
--- a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-#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::keyPressEvent(QKeyEvent *event) {
-  if (event->key() == Qt::Key_Up) {
-    ui->l->move(ui->l->pos().x(), ui->l->pos().y() - 20);
-  } else if (event->key() == Qt::Key_Down) {
-    ui->l->move(ui->l->pos().x(), ui->l->pos().y() + 20);
-  } else if (event->key() == Qt::Key_Left) {
-    ui->l->move(ui->l->pos().x() - 20, ui->l->pos().y());
-  } else if (event->key() == Qt::Key_Right) {
-    ui->l->move(ui->l->pos().x() + 20, ui->l->pos().y());
-  }
-}
-void MainWindow::keyReleaseEvent(QKeyEvent *e) {
-  if (e->key() == Qt::Key_Up) {
-    ui->l->move(ui->l->pos().x(), ui->l->pos().y() - 20);
-  } else if (e->key() == Qt::Key_Down) {
-    ui->l->move(ui->l->pos().x(), ui->l->pos().y() + 20);
-  } else if (e->key() == Qt::Key_Left) {
-    ui->l->move(ui->l->pos().x() - 20, ui->l->pos().y());
-  } else if (e->key() == Qt::Key_Right) {
-    ui->l->move(ui->l->pos().x() + 20, ui->l->pos().y());
-  }
-}
diff --git a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.h b/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.h
deleted file mode 100644
index 9de1fb3..0000000
--- a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QKeyEvent>
-#include <QMainWindow>
-QT_BEGIN_NAMESPACE
-namespace Ui {
-class MainWindow;
-}
-QT_END_NAMESPACE
-
-class MainWindow : public QMainWindow {
-  Q_OBJECT
-
-public:
-  MainWindow(QWidget *parent = nullptr);
-  ~MainWindow();
-
-private:
-  Ui::MainWindow *ui;
-  void keyPressEvent(QKeyEvent *e);
-  void keyReleaseEvent(QKeyEvent *e);
-};
-#endif // MAINWINDOW_H
diff --git a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.ui b/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.ui
deleted file mode 100644
index 3703833..0000000
--- a/SoftwareDesign/Code/2-3-5/lab2-3-5_KeyEvent/mainwindow.ui
+++ /dev/null
@@ -1,45 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>MainWindow</class>
- <widget class="QMainWindow" name="MainWindow">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>800</width>
-    <height>600</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>MainWindow</string>
-  </property>
-  <widget class="QWidget" name="centralwidget">
-   <widget class="QLabel" name="l">
-    <property name="geometry">
-     <rect>
-      <x>240</x>
-      <y>200</y>
-      <width>77</width>
-      <height>25</height>
-     </rect>
-    </property>
-    <property name="text">
-     <string>TextLabel</string>
-    </property>
-   </widget>
-  </widget>
-  <widget class="QMenuBar" name="menubar">
-   <property name="geometry">
-    <rect>
-     <x>0</x>
-     <y>0</y>
-     <width>800</width>
-     <height>30</height>
-    </rect>
-   </property>
-  </widget>
-  <widget class="QStatusBar" name="statusbar"/>
- </widget>
- <resources/>
- <connections/>
-</ui>