dialog.h

#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>

// wrap the class in Ui::
namespace Ui {
    class Dialog;
}

class Dialog : public QDialog {
Q_OBJECT

public:

    explicit Dialog(QWidget *parent = nullptr);

    ~Dialog();

private:
    Ui::Dialog *ui;
};

#endif // DIALOG_H