import PySimpleGUI as sg

# Testing async form, see if can have a slider

# that adjusts the size of text displayed

fontSize = 12

layout = [

[sg.Spin([sz for sz in range(6, 172)],

font=('Helvetica 20'),

initial_value=fontSize,

change_submits=True, key='spin'),

sg.Slider(range=(6, 172), orientation='h', size=(10, 20), change_submits=True, key='slider',

font=('Helvetica 20')),

sg.Text("Aa", size=(2, 1), font="Helvetica " + str(fontSize), key='text')]

]

sz = fontSize

window = sg.Window("Font size selector", layout, grab_anywhere=False)

while True:

event, values = window.read()

if event is None or event == 'Quit':

break

sz_spin = int(values['spin'])

sz_slider = int(values['slider'])

sz = sz_spin if sz_spin != fontSize else sz_slider

if sz != fontSize:

fontSize = sz

font = "Helvetica " + str(fontSize)

window['text'].update(font=font)

window['slider'].update(sz)

window['spin'].update(sz)

window.close()