find code in qr code example
Example: QR code in QT
#include "QrCode.hpp"
void paintQR(QPainter &painter, const QSize sz, const QString &data, QColor fg)
{
qrcodegen::QrCode qr = qrcodegen::QrCode::encodeText(data.toUtf8().constData(), qrcodegen::QrCode::Ecc::LOW);
const int s=qr.getSize()>0?qr.getSize():1;
const double w=sz.width();
const double h=sz.height();
const double aspect=w/h;
const double size=((aspect>1.0)?h:w);
const double scale=size/(s+2);
painter.setPen(Qt::NoPen);
painter.setBrush(fg);
for(int y=0; y