*: normalize usage of layouts before, I used them two ways, once was by setting the layout later by using setLayout(QWidget), and the other was just using the constructor. I find the constructor to be easier to read, so I chose that one.

#ifndef __gui__dialog__about_h
#define __gui__dialog__about_h
#include <QDialog>

class AboutWindow : public QDialog {
	public:
		AboutWindow(QWidget* parent = nullptr);
};

#endif // __gui__dialog__about_h