#ifndef MAINWINDOW_H #define MAINWINDOW_H #include namespace Ui { class MainWindow; } class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = nullptr); ~MainWindow(); signals: void germanRequested(); private slots: void on_pushButton_clicked(); private: void changeEvent(QEvent* event); Ui::MainWindow *ui; }; #endif // MAINWINDOW_H