#!/usr/bin/env python

import PySimpleGUI as sg

"""

Copyright 2018-2026 PySimpleGUI. All rights reserved.

"""

# Demonstrates a number of PySimpleGUI features including:

# Default element size

# auto_size_buttons

# Button

# Dictionary return values

# update of elements in form (Text, Input)

layout = [[sg.Text('Enter Your Passcode')],

[sg.Input('', size=(10, 1), key='input')],

[sg.Button('1'), sg.Button('2'), sg.Button('3')],

[sg.Button('4'), sg.Button('5'), sg.Button('6')],

[sg.Button('7'), sg.Button('8'), sg.Button('9')],

[sg.Button('Submit'), sg.Button('0'), sg.Button('Clear')],

[sg.Text('', size=(15, 1), font=('Helvetica', 18),

text_color='red', key='out')],

]

window = sg.Window('Keypad', layout,

default_button_element_size=(5, 2),

auto_size_buttons=False,

grab_anywhere=False)

# Loop forever reading the form's values, updating the Input field

keys_entered = ''

while True:

event, values = window.read() # read the form

if event == sg.WIN_CLOSED: # if the X button clicked, just exit

break

if event == 'Clear': # clear keys if clear button

keys_entered = ''

elif event in '1234567890':

keys_entered = values['input'] # get what's been entered so far

keys_entered += event # add the new digit

elif event == 'Submit':

keys_entered = values['input']

window['out'].update(keys_entered) # output the final string

# change the form to reflect current key string

window['input'].update(keys_entered)

window.close()