有没有办法在 PySimpleGui spinboxes 中限定 integer 输入范围的最小值和最大值，以便最小值不会超过最大值？

Question

My objective is to input both a minimum value, and a maximum value, in a window in PySimpleGui using spinboxes. But the idea is also to limit the range of the spinboxes according to each other, so that the minimum value doesn't surpass the maximum value; ex. if i input 50 in the upper spinbox (minimum) the lower one (maximum) should not be able to take a number below 50, or also similarly in reverse, if i input 60 in the lower spinbox (maximum), the upper one (minimum) should only accept a number below 60.

So far i have done this for the code for both spinboxes (setValues is a set with integers defined previously on the code).

minValues = int(min(setValues))
maxValues = int(max(setValues))
print(minValues, maxValues)

layout = [[sg.Spin([i for i in range(minValues,maxValues+1)], initial_value=minValues), sg.Text('Minimum value')],
        [sg.Spin([i for i in range(minValues,maxValues+1)], initial_value=maxValues), sg.Text('Maximum value')],
        [sg.Submit(), sg.Cancel()]]
window = sg.Window('Window Title', layout)

While preferably i would like a solution in PySimpleGui, an answer suggested in other GUI libraries would also be welcome.

Answer 1

Update option values of another sg.Spin when event of this sg.Spin .

Demo code as following,

import PySimpleGUI as sg

sg.theme("DarkBlue")
sg.set_options(font=("Courier New", 16))

minValue = 5
maxValue = 20

layout = [
    [sg.Spin([i for i in range(minValue, maxValue)],     initial_value=minValue, size=(2, 1), enable_events=True, key='-MIN-'), sg.Text('Minimum value')],
    [sg.Spin([i for i in range(minValue+1, maxValue+1)], initial_value=maxValue, size=(2, 1), enable_events=True, key='-MAX-'), sg.Text('Maximum value')],
    [sg.Submit(), sg.Cancel()],
]

window = sg.Window('Title', layout, finalize=True)

value_min, value_max = minValue, maxValue

while True:
    event, values = window.read()
    if event == sg.WINDOW_CLOSED:
        break
    elif event == '-MAX-':
        value_max = values[event]
        window['-MIN-'].update(values=[i for i in range(minValue, value_max)])
    elif event == '-MIN-':
        value_min = values[event]
        window['-MAX-'].update(values=[i for i in range(value_min+1, maxValue+1)])
    print(event, values)

window.close()