How to get global scroll events on python win32api

Question

How can I get global scroll events with win32api on Python? I searched how can I do that and found answer: https://stackoverflow.com/a/65101276/8705882, and it is not working due to an error.

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

If there is how to solve this error or another method of getting global mouse scroll event, please let me know!

Zeus · Accepted Answer · 2021-01-15 01:22:17Z

1

If you are running on a 64-bit system, using the win32api.GetModuleHandle(None) parameter will cause this error.

The reason is that the function recognizes the parameter as C int, you can modify it to c_void_p(win32api.GetModuleHandle(None) to solve this problem.

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

This can work normally under both 32-bit and 64-bit systems.

Edit

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)

edited Jan 15, 2021 at 1:22

answered Dec 21, 2020 at 2:17

Zeus

3,9363 gold badges9 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Zeus Over a year ago

Hi,if this answer did help to you, please feel free to mark it to help people with the same issue, and let me know if you have any problem.Thanks.

ack Over a year ago

This does not solve the problem for me. The relevant part of the stack trace:

return windll.user32.CallNextHookEx(hook_id, nCode, wParam, lParam) ctypes.ArgumentError: argument 4: <class 'OverflowError'>: int too long to convert

.

Zeus Over a year ago

@Alex Quilliam Maybe you can use wintypes, I have edited my answer and you can refer to it.

ack Over a year ago

After importing wintypes, the new code works, thanks. Perhaps you should update your answer to the other question as well?

Zeus Over a year ago

@AlexQuilliam Yes, I have modified it, thank you for your reminder.

Collectives™ on Stack Overflow

How to get global scroll events on python win32api

1 Answer 1

5 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related