how to save a image file ( say png ) into mysql database?

[soxs060389]

Save given QImage directly into QByteArray:

QImage image;
         QByteArray ba;
         QBuffer buffer(&ba);
         buffer.open(QIODevice::WriteOnly);
         image.save(&buffer, "PNG");

QImage image;
         QByteArray ba;
         QBuffer buffer(&ba);
         buffer.open(QIODevice::WriteOnly);
         image.save(&buffer, "PNG");

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(Taken from Documentation)