QT QML integrate with thermal USB Printer

[RiyG22]

Dear experts,

I am learning QT and implement in my Kiosk based Application. I am trying to integrate a USB based thermal printer with the system and print the user selected coupon via printer.

I went through QtPrintSupport library but I am not sure how to implement it with the Application. Any guidance will be really helpful for me.

Thank you.

[jsulm]

@RiyG22 How is this printer actually used? Is there an SDK to develop applications which use it?
Also, are we talking about 3D printer or a simple paper printer?

[RiyG22]

@jsulm Hi, Thank you very much for your quick reply. I am using this printer - https://eurocoincomponents.com/product/ms-fpt201k-panel-printer/

I've used it with python before, accessed it using VID, PID and used escposprinter library there. It's a simple roll printer. There is no SDK to develop it, it works on USB protocol. It uses ESC/POS command.

[SGaist]

Hi,

That's the kind of printer that is outside the Qt Print Support module scope.

From what I can see, it's a serial port based device so you could use QSerialPort to communicate with it.

[RiyG22]

@SGaist , thank you for your support. It doesn't create any serial port to communicate serially. How to integrate it then?

[SGaist]

If you list all the serial ports with QSerialPortInfo::availablePorts, what do you get ?

[RiyG22]

It doesn't print anything for the printer. I have run this part of code:

for(auto info: QSerialPortInfo::availablePorts()){
        qDebug()<<info.portName()<<info.description()<<info.manufacturer();
        if(!info.isBusy() && (info.description().contains("Silicon Labs CP210x USB to UART Bridge") || info.manufacturer().contains("Silicon Labs"))){
            portInfo = info;
            break;
        }
    }

[SGaist]

What do you get ?

[RiyG22]

@SGaist , I didn't get anything because It doesn't create any serial port on my device.

[SGaist]

Do you mean the list is empty ?

[fcarney]

From website:
"Driver: Windows/Linux/Android OS"
Ask them for a driver.