用整体置数法俩片74ls161设计二十四进制计数器

#ifndef QRWIDGET_H
#define QRWIDGET_H

#include
#include "qrencode.h"

class QRWidget : public QWidget
{
Q_OBJECT
public:
explicit QRWidget(QWidget *parent = 0);
~QRWidget();
void setString(QString str);
int getQRWidth() const;
bool saveImage(QString name, int size);
private:
void draw(QPainter &painter, int width, int height);
QString string;
QRcode *qr;
signals:

protected:
void paintEvent(QPaintEvent *);
QSize sizeHint() const;
QSize minimumSizeHint() const;
public slots:
};

#endif // QRWIDGET_H