Converting Character data to QString in Qt Creator

Question

I'm working on a QT project (Qt Creator 5.2.1) with a function that receives a receives a device's IP address in a UDP datagram. I need to convert it to a QString to correctly output to the screen. The datagram is stored in a QByteArray called "buffer" as integer data - so the IP address of 10.1.10.60 shows up in the datagram as 0A010A3C. I'm trying to store the IP address in a QString "nburn_data". Currently I have this code for handling it:

nburn_data.append(QString::fromUtf8(buffer.left(2).toHex().toUpper(), 
    buffer.left(2).size()));

When the output is put to the screen (GUI) I don't get "10.1.10.60", I get "0A.01.0A.3C"

I've tried a few different methods to convert correctly, but nothing seems to be working. Any suggestions?

Edit: @Laszlo Papp- I've attached an image along with the output (highlighted) from suggested code.

Answer 1

I do not understand what you try to do with your code as it seems to be out of order, but the following code works for me:

main.cpp

#include <QString>
#include <QByteArray>
#include <QDebug>

int main()
{
    QByteArray buffer = "0A010A3C";
    QString nburn_data;
    bool ok;
    for (int i = 0; i < 8; i+=2) {
        if (i)
            nburn_data.append('.');
        nburn_data.append(QByteArray::number(buffer.mid(i, 2).toInt(&ok, 16)));
        // when using int buffer, then replace the above line with this:
        // nburn_data.append(buffer.mid(i, 2));
    }
    qDebug() << nburn_data;
    return 0;
}

main.pro

TEMPLATE = app
TARGET = main
QT = core
SOURCES += main.cpp

Build and Run

qmake && make && ./main

Output

"10.1.10.60"

Edit: since you seem to have changed your input when updating the question, you will need to this update to my previous code answering your original question:

tempbuffer = tempbuffer.toHex(); // before the loop in your code

or you could just remove the needless number conversion in my loop, so replacing the inner line with this:

nburn_data.append(buffer.mid(i, 2));