4m lab3 header

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <vector>
#include <QPainter>
#include <QTimer>

using namespace std;

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

protected:
    void paintEvent(QPaintEvent *event);
private slots:
    void update();
    void on_pushButton_2_clicked();

private:
    Ui::MainWindow *ui;
    QTimer *trm = NULL;
};


#endif // MAINWINDOW_H