Takes screenshots without pywin32 dependency (whole screen/single window)

pip install ctypes-screenshot

from ctypes_screenshots import screencapture_window, list_windows, screencapture



import cv2

import time



# get the hwnd if you want to capture a single window

list_windows()

# Out[5]: 

# [WindowInfo(pid=1544, title='Seagate Expansion Drive (F:)', hwnd=525322, length=29),

#  WindowInfo(pid=1840, title='', hwnd=72700, length=1),

#  WindowInfo(pid=1840, title='', hwnd=72702, length=1),

#  WindowInfo(pid=1840, title='jFDSk.png @ 100% (Layer 1, RGB/8)', hwnd=2362732, length=34),

#  WindowInfo(pid=3416, title='', hwnd=131744, length=1),



# captures a single window

for _ in screencapture_window(hwnd=5901160):

    last_time = time.time()

    cv2.imshow("OpenCV/Numpy normal", _)

    if cv2.waitKey(25) & 0xFF == ord("q"):

        cv2.destroyAllWindows()

        break

    print(f"fps: {1 / (time.time() - last_time)}", end="\r")



# uses mss 

for _ in screencapture(monitor={"top": 40, "left": 0, "width": 800, "height": 640}):

    last_time = time.time()

    cv2.imshow("OpenCV/Numpy normal", _)

    if cv2.waitKey(25) & 0xFF == ord("q"):

        cv2.destroyAllWindows()

        break

    print(f"fps: {1 / (time.time() - last_time)}", end="\r")