diff --git a/MainWindow.cpp b/MainWindow.cpp
index ff126e8..6fd16a7 100644
--- a/MainWindow.cpp
+++ b/MainWindow.cpp
@@ -1,9 +1,11 @@
 #include "MainWindow.h"
 #include "ui_MainWindow.h"
+#include <QKeyEvent>
 
-MainWindow::MainWindow(QWidget *parent)
+MainWindow::MainWindow(QWidget* parent)
     : QMainWindow(parent)
     , ui(new Ui::MainWindow)
+    , openCLManager(new OpenCLManager())
 {
     ui->setupUi(this);
 }
@@ -11,5 +13,19 @@ MainWindow::MainWindow(QWidget *parent)
 MainWindow::~MainWindow()
 {
     delete ui;
+    delete openCLManager;
 }
 
+void MainWindow::keyPressEvent(QKeyEvent* event)
+{
+    if(event->key() == Qt::Key_1)
+    {
+        std::cout << "Simulating system suspend..." << std::endl;
+        openCLManager->handleSuspendResume(true); //Simulate suspend
+    }
+    else if(event->key() == Qt::Key_2)
+    {
+        std::cout << "Simulating system resume..." << std::endl;
+        openCLManager->handleSuspendResume(false); //Simulate resume
+    }
+}
diff --git a/MainWindow.h b/MainWindow.h
index 4643e32..5a56b40 100644
--- a/MainWindow.h
+++ b/MainWindow.h
@@ -2,9 +2,11 @@
 #define MAINWINDOW_H
 
 #include <QMainWindow>
+#include "OpenCLManager.h"
 
 QT_BEGIN_NAMESPACE
-namespace Ui { class MainWindow; }
+namespace Ui { class MainWindow;
+}
 QT_END_NAMESPACE
 
 class MainWindow : public QMainWindow
@@ -12,10 +14,15 @@ class MainWindow : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = nullptr);
+    MainWindow(QWidget* parent = nullptr);
     ~MainWindow();
 
+protected:
+    void keyPressEvent(QKeyEvent* event) override;
+
 private:
-    Ui::MainWindow *ui;
+    Ui::MainWindow* ui;
+    OpenCLManager* openCLManager;
 };
-#endif // MAINWINDOW_H
+
+#endif //MAINWINDOW_H
diff --git a/main.cpp b/main.cpp
index 34339a4..b4caa0d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -13,7 +13,7 @@
 int main(int argc, char* argv[])
 {
     QApplication a(argc, argv);
-    OpenCLManager openCLManager;
+    //OpenCLManager openCLManager;
 
     MainWindow w;
     w.show();