Barcode scan using Input as Return key

Question

Is it possible to use input in PySimpleGUI to behave like a button event?

I would like to read a scancod (44 characters) in Input, after the automatic reception enters (Return Key), and add this code to a listbox. I was looking for a documentation, but I can't adapt myself '' 'window = sg.Window("Keyboard Test", layout, return_keyboard_events = True, use_default_focus = False)' '' Give me an example, please. Thanks

Jason Yang · Accepted Answer · 2021-06-05 05:31:35Z

2

You can bind "<Return>" key to your input element, then do something in event loop.

import PySimpleGUI as sg

layout = [[sg.Input(key='INPUT')]]
window = sg.Window("Title", layout, finalize=True)
entry = window['INPUT']
entry.bind("<Return>", "_RETURN")

while True:
    event, values = window.read()
    if event == sg.WINDOW_CLOSED:
        break
    elif event == "INPUT_RETURN":
        print(f"Input: {values['INPUT']}")

window.close()

answered Jun 5, 2021 at 5:31

Jason Yang

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2 Comments

marreco Over a year ago

Hi Jason Yang First of all, I would like to say thank you so much!!! Sencondly it's a pleasure answed by someone who is one of the PySimpleGUI contributors. Anyway this solve my question, thanks I'm looking the Documentation (pysimplegui.readthedocs.io/en/latest/call%20reference/#window), trying to understand what mean >> finalize << Window parameter. I'm still a bit confused. Type: bool, Name: finalize, Meaning: If True then the Finalize method will be called. Use this rather than chaining .Finalize for cleaner code

Jason Yang Over a year ago

Before window finalized, PySimpleGUI just configure everything about layout or settings. Startup tkinter only when sg.Window with option finalize=True, window.finalize() or window.read(). All of them will do the samething to finalize window by tkinter.

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