Pysimplegui and Pygame merge - input

Question

hi I am trying to merge a pygame program with pysimplegui.
i'm looking for a way of grabbing the downstroke of a keyboard key. at the moment i can only see an upstroke of the key no matter what im doing.
I have sucessfully created pysimplegui programs but this is the first time i'm trying to merge with pygame.
window is setup by
window = sg.Window('UNICHALL V2.0',
Win_layout,
border_depth =20,
resizable = True,
keep_on_top = False,
finalize=True,
return_keyboard_events=True,
use_default_focus=False)
and in my pygame program i use
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
stop = pygame.time.get_ticks()
delta = stop - start
key = event.key
if key == 27:
sys.exit(1) ...
i can't get these two work in harmony, they either internally loop forever or simply stop the program dead.
Any help appreciated.

Answer 1

If you just need to detect when key pressed and released, try to bind the event '<KeyPress>' and '<KeyRelease>', not set option return_keyboard_events=True of sg.Window.
Example Code
import PySimpleGUI as sg
layout = [
[sg.InputText('', key='-INPUT-')],
[sg.Button('Add Binding'), sg.Button('Remove Binding')],
]
window = sg.Window('Test Program', layout, finalize=True)
while True:
event, values = window.read()
if event == sg.WIN_CLOSED:
break
elif event in ('Press', 'Release'):
e = window.user_bind_event
action = 'pressed' if event == 'Press' else 'released'
print(f'char:{repr(e.char)} | keycode:{e.keycode} | keysym:{e.keysym} | keysym_num:{e.keysym_num} {action}')
elif event == 'Add Binding':
window.bind("<KeyPress>", "Press")
window.bind("<KeyRelease>", "Release")
elif event == 'Remove Binding':
window.TKroot.unbind("<KeyPress>")
window.user_bind_dict.pop("<KeyPress>", None)
window.TKroot.unbind("<KeyRelease>")
window.user_bind_dict.pop("<KeyRelease>", None)
window.close()