#include <QApplication>
#include "mainwindow.h"
int main(int argc, char** argv)
{
QApplication app(argc, argv);
MainWindow mainWindow;
mainWindow.resize(400, 250);
mainWindow.show();
QObject::connect(&mainWindow,
&MainWindow::quitSignal,
&app,
&QApplication::closeAllWindows);
return app.exec();
}