qfedu-qt-level/homework-day2/mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <widget1.h>

class MainWindow : public QMainWindow
{
    Q_OBJECT

private:
    Widget1 *widget1;

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
};
#endif // MAINWINDOW_H