如何截取可滚动窗口的完整内容？现有代码无法实现滚动截图需求

To capture the complete output of systeminfo by scrolling and stitching screenshots, here's a revised implementation that addresses the need for vertical scrolling and full content capture:

Key Improvements #

• Activates and maximizes the Command Prompt window to optimize screen real estate
• Scrolls to the top of the output before starting captures
• Takes incremental screenshots while scrolling down until no new content is visible
• Stitches screenshots together (removing overlap) to create a single full-length image

Required Packages #

Install the necessary libraries first:

pip install pyautogui pygetwindow pillow

Full Code #

import pyautogui
import subprocess
import time
import pygetwindow as gw
from PIL import Image

# Step 1: Open Command Prompt and prepare the window
subprocess.Popen('start cmd', shell=True)
time.sleep(2)

# Locate, activate, and maximize the Command Prompt window
cmd_windows = gw.getWindowsWithTitle('Command Prompt')
if cmd_windows:
    cmd_window = cmd_windows[0]
    cmd_window.activate()
    cmd_window.maximize()
time.sleep(1)

# Step 2: Execute systeminfo command
pyautogui.write('systeminfo')
pyautogui.press('enter')
time.sleep(10)  # Adjust based on system speed to ensure command completes

# Step 3: Scroll to the top of the output
pyautogui.press('home')
time.sleep(0.5)

# Step 4: Capture incremental screenshots while scrolling
screenshots = []
scroll_step = 30  # Number of down-arrow presses per scroll (adjust as needed)
overlap_pixels = 200  # Overlap between screenshots to ensure continuity (adjust as needed)

# Capture initial screenshot
screenshots.append(pyautogui.screenshot())
time.sleep(0.5)

last_screenshot = None
while True:
    # Scroll down by the defined step
    for _ in range(scroll_step):
        pyautogui.press('down')
    time.sleep(0.5)
    
    # Capture new screenshot
    current_screenshot = pyautogui.screenshot()
    
    # Check if we've reached the end (no new content)
    if last_screenshot and current_screenshot.tobytes() == last_screenshot.tobytes():
        break
    
    screenshots.append(current_screenshot)
    last_screenshot = current_screenshot

# Step 5: Stitch screenshots into one full image
def stitch_screenshots(images, overlap):
    if not images:
        return None
    
    # Calculate total height after removing overlaps
    total_height = images[0].height + sum(img.height - overlap for img in images[1:])
    stitched_img = Image.new('RGB', (images[0].width, total_height))
    
    y_offset = 0
    stitched_img.paste(images[0], (0, y_offset))
    y_offset += images[0].height
    
    for img in images[1:]:
        # Crop overlapping top portion
        cropped_img = img.crop((0, overlap, img.width, img.height))
        stitched_img.paste(cropped_img, (0, y_offset))
        y_offset += cropped_img.height
    
    return stitched_img

# Generate and save the full screenshot
full_screenshot = stitch_screenshots(screenshots, overlap_pixels)
if full_screenshot:
    full_screenshot.save('systeminfo_full_screenshot.png')
    print("Full screenshot saved as 'systeminfo_full_screenshot.png'")
else:
    print("Failed to capture any screenshots.")

Notes #

• Adjust scroll_step based on how much you want to scroll each time (more steps = fewer screenshots)
• Tweak overlap_pixels to ensure no content is missing between screenshots (depends on your screen resolution and cmd font size)
• The time.sleep values may need adjustment based on your system's responsiveness

内容的提问来源于stack exchange，提问作者cybersecCoder