text: #ifndef DIALOGABOUT_H
  #define DIALOGABOUT_H
  
  #include <QDialog>
  
  namespace Ui {
  class DialogAbout;
  }
  
  class DialogAbout : public QDialog
  {
      Q_OBJECT
  
  public:
      explicit DialogAbout(QWidget *parent = nullptr);
      ~DialogAbout();
  
  private:
      Ui::DialogAbout *ui;
  };
  
  #endif // DIALOGABOUT_H
  