gistfile1.cpp

#include "MainWindow.h"

MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
{
}

MainWindow::~MainWindow()
{
}

void MainWindow::paintEvent(QPaintEvent *event)
{
	QPainter painter(this);

	painter.drawLine(20, 20, 60, 70);

	QMainWindow::paintEvent(event);
}