Selecting from all available serial ports using Qt GUI

Question

I could not find a conclusive answer to my issue so I decided to post my first question on this site. I'm fairly new to programming and have been using Qt for a couple of months now. My code communicates with a microcontroller via serial ports, however the available port differs from pc to pc. I'm displaying the number of ports available with the code;

qDebug() << "Number of serial ports:" << QSerialPortInfo::availablePorts().count(); 

My question is: how can I display the name of all the available ports eg "COM 10, 17. 22, etc" and then show them in my GUI. What I eventually hope to do is have a combo box that can be dynamically populated with the available ports, I have one that switches between a couple ports at the moment but these are fixed ports corresponding to particular computers.

Answer 1

Try something like this:

#include <QApplication>
#include <QWindow>
#include <QSerialPortInfo>
#include <QComboBox>


int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QWidget w;
    w.resize(200,200);
    w.show();

    QComboBox box(&w);
    Q_FOREACH(QSerialPortInfo port, QSerialPortInfo::availablePorts()) {
        box.addItem(port.portName());
    }
    box.move(100 - box.width() / 2,100 - box.height() / 2);
    box.show();

    return a.exec();
}

The code is pretty self-explanatory.