diff -r 2bdc3ac5e77c -r 55a55a9ec2c2 src/mainwindow.h
--- a/src/mainwindow.h	Sat Aug 24 14:44:42 2019 +0300
+++ b/src/mainwindow.h	Sun Sep 22 11:51:41 2019 +0300
@@ -1,12 +1,14 @@
 #pragma once
 #include <QMainWindow>
+#include <memory>
+#include <vector>
 
 class MainWindow : public QMainWindow
 {
-    Q_OBJECT
+	Q_OBJECT
 public:
-    MainWindow(QWidget *parent = nullptr);
-    ~MainWindow();
+	MainWindow(QWidget *parent = nullptr);
+	~MainWindow();
 private:
-    class Ui_MainWindow &ui;
+	std::unique_ptr<class Ui_MainWindow> ui;
 };