PyAutoGUI能否在PC后台运行？游戏窗口后台刷屏程序实现咨询

Hey there! I get it—PyAutoGUI is great for simulating input, but it’s tied to the foreground active window, which is a bummer when you want your spammer to run in the background while you’re in a game. Let’s break down some practical, Python-friendly solutions to fix this:

1. Use Windows API via pywin32 (Most Reliable for Windows Games) #

PyAutoGUI works by sending global input events, but to target a background window, we need to directly send messages to the window’s message queue. The pywin32 library lets us interact with Windows’ native API to do this, no window activation required.

Step-by-Step Implementation: #

First, install the library:

pip install pywin32

Then, here’s a modified version of your spammer that works in the background:

import win32gui
import win32api
import win32con
import time

def find_game_window(target_title):
    """Find the window handle by matching part of its title"""
    window_handles = []
    
    def window_enumeration_callback(handle, extra):
        window_title = win32gui.GetWindowText(handle)
        if target_title.lower() in window_title.lower():
            extra.append(handle)
        return True
    
    win32gui.EnumWindows(window_enumeration_callback, window_handles)
    return window_handles[0] if window_handles else None

def send_text_to_background_window(handle, text):
    """Send text directly to the target window's message queue"""
    for char in text:
        # Send a character input message to the window
        win32api.SendMessage(handle, win32con.WM_CHAR, ord(char), 0)
        time.sleep(0.05)  # Simulate natural typing speed

# Replace this with your game's window title (or part of it)
GAME_WINDOW_TITLE = "Your Game's Window Title"
game_handle = find_game_window(GAME_WINDOW_TITLE)

if game_handle:
    print(f"Successfully found game window: {win32gui.GetWindowText(game_handle)}")
    # Run the spammer loop
    while True:
        send_text_to_background_window(game_handle, "I can't be on Facebook\n")
        time.sleep(5)  # Adjust spam interval as needed
else:
    print("Failed to find the game window—double-check the title!")

How This Works: #

• find_game_window scans all open windows to find the one matching your game’s title (you can use a partial match if the full title changes).
• send_text_to_background_window uses SendMessage to send WM_CHAR events directly to the game window’s message queue. This bypasses the need for the window to be active in the foreground.

2. Note About Games Using DirectX/OpenGL #

Some games (especially 3D ones) use rendering engines that don’t process standard WM_CHAR messages. For these, you might need a more low-level approach:

• Use ctypes to call Windows’ SendInput function, combined with a window hook to redirect input to the background window. This is more complex but works with most games.
• Be warned: Many online games have anti-cheat systems that flag automated background input. Use this at your own risk to avoid account bans.

3. Alternative: AutoHotkey + Python (If You Don’t Mind Mixed Tools) #

AutoHotkey is built specifically for Windows window automation, including background input. You can write a simple AHK script to handle the background spamming, then call it from your Python code. This is a good option if the pywin32 method doesn’t work for your game.

Quick Example AHK Script (background_spam.ahk): #

SetTitleMatchMode, 2
WinActivate, Your Game's Window Title
WinWaitActive, Your Game's Window Title
Loop {
    Send, I can't be on Facebook{Enter}
    Sleep, 5000
}

Then run it from Python with:

import subprocess
subprocess.Popen(["background_spam.ahk"])

Key Takeaways #

• The pywin32 method is the best pure-Python solution for most Windows games.
• Always test with single-player games first if you’re targeting online titles—anti-cheat tools will likely detect automated input.
• Adjust the typing interval and spam frequency to avoid triggering anti-spam or anti-cheat systems.

内容的提问来源于stack exchange，提问作者Duke Smath