25 lines
721 B
Python
25 lines
721 B
Python
import PySimpleGUI as sg
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"""
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Simple field validation
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Input field should only accept digits.
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If non-digit entered, it is deleted from the field
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"""
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layout = [[sg.Text('Enter digits:')],
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[sg.Input('', enable_events=True, key='-INPUT-')],
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[sg.Button('Ok', key='-OK-'), sg.Button('Exit')]]
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window = sg.Window('Window Title', layout)
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while True: # Event Loop
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event, values = window.read()
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if event in (sg.WIN_CLOSED, 'Exit'):
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break
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# if last char entered not a digit
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if len(values['-INPUT-']) and values['-INPUT-'][-1] not in ('0123456789'):
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# delete last char from input
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window['-INPUT-'].update(values['-INPUT-'][:-1])
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window.close()
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