在 Python 中使用 Win32api 获取鼠标滚轮滚动 [英] Get Mouse Wheel Scroll usin Win32api in Python

问题描述

我想读取鼠标滚轮滚动事件，然后模拟它们.我知道我可以使用下面的代码模拟它.

#向上滚动一个win32api.mouse_event(MOUSEEVENTF_WHEEL, x, y, 1, 0)#向下滚动一个win32api.mouse_event(MOUSEEVENTF_WHEEL, x, y, -1, 0)

但是，我找不到在 python 中使用 win32api 获取 whell 滚动事件的方法.无论如何检测滚轮向上或向下滚动事件?

解决方案

如果您需要获取全局 WM_MOUSEWHEEL 消息，可以使用

编辑

如果出现: int too long to convert之类的问题，可以试试下面的代码:

导入win32api导入 win32con导入 ctypes从 ctypes 导入 windll、CFUNCTYPE、c_int、c_void_puser32 = ctypes.windll.user32kernel32 = ctypes.windll.kernel32user32.CallNextHookEx.argtypes = [ctypes.wintypes.HHOOK,c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM]def LowLevelMouseProc(nCode, wParam, lParam):如果 wParam == win32con.WM_MOUSEWHEEL:打印(鼠标滚轮触发！")返回 user32.CallNextHookEx(hook_id, nCode, wParam, lParam)如果 __name__ == '__main__':CMPFUNC = CFUNCTYPE(c_void_p, c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM)user32.SetWindowsHookExW.argtypes = [c_int,CMPFUNC,ctypes.wintypes.HINSTANCE,ctypes.wintypes.DWORD]指针 = CMPFUNC(LowLevelMouseProc)hook_id = user32.SetWindowsHookExW(win32con.WH_MOUSE_LL,pointer,win32api.GetModuleHandle(None), 0)msg = ctypes.wintypes.MSG()而 user32.GetMessageW(ctypes.byref(msg), 0, 0, 0) != 0:user32.TranslateMessage(msg)user32.DispatchMessageW(msg)

I want to read mouse wheel scroll events and then simulate them. I know I can simulate it using below code.

#Scroll one up
win32api.mouse_event(MOUSEEVENTF_WHEEL, x, y, 1, 0)

#Scroll one down
win32api.mouse_event(MOUSEEVENTF_WHEEL, x, y, -1, 0)

However, I couldn't find a way to get whell scroll event using win32api in python. Is there anyway to detect wheel scroll up or down events?

解决方案

If you need to get the global WM_MOUSEWHEEL message, you can use the SetWindowsHookEx function and with WH_MOUSE_LL hook.

Then handle the WM_MOUSEWHEEL message in the hook function.

Here is a sample:

import win32api 
import win32con
import ctypes
from ctypes import windll, CFUNCTYPE, POINTER, c_int, c_void_p, byref

user32 = ctypes.windll.user32
kernel32 = ctypes.windll.kernel32

def LowLevelMouseProc(nCode, wParam, lParam):
    if wParam == win32con.WM_MOUSEWHEEL:
        print("mousewheel triggerd!")
    return windll.user32.CallNextHookEx(hook_id, nCode, wParam, lParam)

if __name__ == '__main__':
    CMPFUNC = CFUNCTYPE(c_void_p, c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM)

    pointer = CMPFUNC(LowLevelMouseProc)
    hook_id = user32.SetWindowsHookExW(win32con.WH_MOUSE_LL,pointer,c_void_p(win32api.GetModuleHandle(None), 0)
    msg = ctypes.wintypes.MSG()
    while user32.GetMessageW(ctypes.byref(msg), 0, 0, 0) != 0:
        user32.TranslateMessage(msg)
        user32.DispatchMessageW(msg)

It works for me:

Edit

If there are problems like <class'OverflowError'>: int too long to convert, you can try the following code:

import win32api 
import win32con
import ctypes
from ctypes import windll, CFUNCTYPE, c_int, c_void_p

 

user32 = ctypes.windll.user32
kernel32 = ctypes.windll.kernel32
user32.CallNextHookEx.argtypes = [ctypes.wintypes.HHOOK,c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM]

 

def LowLevelMouseProc(nCode, wParam, lParam):
    if wParam == win32con.WM_MOUSEWHEEL:
        print("mousewheel triggerd!")
    return user32.CallNextHookEx(hook_id, nCode, wParam, lParam)

 

if __name__ == '__main__':
    CMPFUNC = CFUNCTYPE(c_void_p, c_int, ctypes.wintypes.WPARAM, ctypes.wintypes.LPARAM)
    user32.SetWindowsHookExW.argtypes = [c_int,CMPFUNC,ctypes.wintypes.HINSTANCE,ctypes.wintypes.DWORD]
    pointer = CMPFUNC(LowLevelMouseProc)
    hook_id = user32.SetWindowsHookExW(win32con.WH_MOUSE_LL,pointer,win32api.GetModuleHandle(None), 0)
    msg = ctypes.wintypes.MSG()
    while user32.GetMessageW(ctypes.byref(msg), 0, 0, 0) != 0:
        user32.TranslateMessage(msg)
        user32.DispatchMessageW(msg)

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