thread_barcode_example.cpp

#include <QDebug>
#include <QThread>
#include <QString>
#include <qtconcurrentrun.h>
#include <QApplication>
#include <QZXing.h>

using namespace QtConcurrent;

QString scan_image(QZXing decoder)
{
    // Sollte dann aus der Kamera erfolgen
    QImage imageToDecode("file.png");
    return decoder.decodeImage(imageToDecode);
}

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    
    QZXing decoder;
    decoder.setDecoder( DecoderFormat_QR_CODE | DecoderFormat_EAN_13 );
    
    QString result = QString("");
    
    QFuture<void> f1;
    while (result.isEmpty()) {
        f1.run(scan_image, decoder);
        f1.waitForFinished();
        result = f1.result();
    }
}