Maybe GetRawInputDeviceList and GetRawInputDeviceInfo API helps you.

But I have not used it yet.

René

I would create a SETUP screen where the user can enter the port and anything you need to connect.

The scanner the client uses is a "Symbol LS2208-SR20007R-NA", plugged in to the USB port

I have checked that the client is able to scan to a notepad but the same doesn't work with PowerBuilder, and the scanned data is not on the clipboard either

I read in another thread that the below command can be used to read from an USB port

FileOpen ( "COM1:", LineMode!, Write!, LockWrite!, Replace!)

replacing the "COM1" by "Device name/port"

But to do that first, I need to know the port number the device uses. How can I do this programmatically without having to ask the client and use a hardcoded value? Also, since it's a plug and play, the device might use the next available port on the computer instead of a standard port number, if I am not wrong

Any help is greatly appreciated, thanks!

Thanks,

Krishna

Hello All - Sorry about the delay in getting back to your responses

The scanning using an open notepad file doesn't seem to work for this specific device

I would have to read from a port, which is fairly easy. This code has to be replicated to other people in case it works on the client machine

I believe all the scanners on individual terminals (if they are from the same manufacturer) use the same port on all machines, and hopefully that port isn't occupied by another process

How do I determine the port number of the device at runtime? Any thoughts?

Thanks,

Krishna

what you are looking for is a keyboard wedge scanner, also know as PS2 Barcode Scanners

If you use that setup, then the scanner acts like a keyboard.  typically you can add a value such as tab or CR to the end of the scanned value (to allow you to skip to the next field) if the scanner allows it.

If you don't use a keyboard wedge style scanner, then you need to read a port

1. Open a notepad and place the cursor in that notepad
2. Scan the barcode
3. Check whether you get the scanned value in the barcode.

If that works, you don't have to do any thing.  Just place the cursor in the required field and scan the barcode.

That's all.

Hi Krishna,

Mayby this helps you:

https://community.appeon.com/index.php/qna/q-a/how-to-scan-qr-code-bar-code-from-powerbuilder-application

Regards,

René