26 lines
830 B
Python
26 lines
830 B
Python
import sys
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if sys.version_info[0] >= 3:
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import PySimpleGUI as sg
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else:
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import PySimpleGUI27 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(do_not_clear=True, 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(layout)
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while True: # Event Loop
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event, values = window.Read()
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if event in (None, 'Exit'):
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break
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if len(values['_INPUT_']) and values['_INPUT_'][-1] not in ('0123456789'): # if last char entered not a digit
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window.Element('_INPUT_').Update(values['_INPUT_'][:-1]) # delete last char from input
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window.Close()
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