sandbox-pokhara/bshot

Python package to take screenshots of windows that are in background

bshot

Python package to take screenshots of windows that are in background

Installation

pip install bshot

Usage

import cv2
import win32gui

from bshot.screenshot import get_image

hwnd = win32gui.FindWindow(None, "Untitled - Notepad")
img = get_image(hwnd, method="srccopy") # windll and srccopy methods
cv2.namedWindow("bshot", cv2.WINDOW_NORMAL)
cv2.imshow("bshot", img)
cv2.waitKey(0)

Benchmark

The speed of the capture depends on the size of the window that is being captured. It can caputre 220x160 window with 2400+ fps.

import time

import win32gui

from bshot.screenshot import get_image

hwnd = win32gui.FindWindow(None, "Untitled - Notepad")

start = time.time()
count = 0
while time.time() - start < 1:
    get_image(hwnd, method="srccopy")
    count += 1
print("fps =", count)

Limitations

• The screenshot module uses GetClientRect which can crop some portion of the window contents.