如何在 python win32api 上获取全局滚动事件

Question

如何在 Python 上使用 win32api 获取全局滚动事件？ 我搜索了如何做到这一点并找到答案： https://stackoverflow.com/a/65101276/8705882 ，由于错误而无法正常工作。

Traceback (most recent call last):
  File "H:/programing/p_python/woweyscroll/study1.py", line 21, in <module>
    hook_id = user32.SetWindowsHookExW(
ctypes.ArgumentError: argument 3: <class 'OverflowError'>: int too long to convert

如果有解决此错误的方法或获取全局鼠标滚动事件的其他方法，请告诉我！

Answer 1

如果在 64 位系统上运行，使用win32api.GetModuleHandle(None)参数会导致此错误。

原因是function识别参数为C int，可以修改为c_void_p(win32api.GetModuleHandle(None)来解决这个问题。

hook_id = user32.SetWindowsHookExW(win32con.WH_MOUSE_LL,pointer,c_void_p(win32api.GetModuleHandle(None)), 0)

这在 32 位和 64 位系统下都可以正常工作。

编辑

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)