在Pysimplegui中绘制图像上的矩形

import PySimpleGUI as sg

window = sg.Window('绘制矩形', layout)

def draw_rectangle(canvas, start_x, start_y, end_x, end_y):
    canvas.draw_rectangle((start_x, start_y), (end_x, end_y), line_color='red', fill_color='blue')

canvas = window['-CANVAS-']

draw_rectangle(canvas, start_x, start_y, end_x, end_y)

import PySimpleGUI as sg

def draw_rectangle(canvas, start_x, start_y, end_x, end_y):
    canvas.draw_rectangle((start_x, start_y), (end_x, end_y), line_color='red', fill_color='blue')

layout = [[sg.Canvas(size=(400, 400), key='-CANVAS-')]]
window = sg.Window('绘制矩形', layout)

while True:
    event, values = window.read()
    if event == sg.WINDOW_CLOSED:
        break
    elif event == '-CANVAS-':
        draw_rectangle(window['-CANVAS-'].TKCanvas, 50, 50, 200, 200)

window.close()