Not just the hotkeys, any attempt to create a hook fails.

same here

I've improved the Win32 calls and it has fixed the problem in my system. Can you check the master branch on your side?

I had the same issue with python 3.5.2 when using pyinstaller, but the commit fixed it.

Sorry for the late response. The latest version on the master branch does indeed work as expected now. Thanks for the fix!

the issue is still there for master branch with python 3.7 on Windows 64 bits. but it work with python 3.6.5.

Issue still present using keyboard.is_pressed with python 3.7 and Python 3.7.1rc1 (v3.7.1rc1:2064bcf6ce, Sep 26 2018, 15:15:36) [MSC v.1914 64 bit (AMD64)] on win32

Same with @lkingscott, I just tried this:

def stop():
	while True:#making a loop
	    if k.is_pressed('q'):#if key 'q' is pressed 
	        print('You Pressed A Key!')
	        global stop 
	        stop = True
	        break#finishing the loop
	    else:
	        pass

and i got

Exception in thread Thread-2:
Traceback (most recent call last):
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\threading.py", line 917, in _bootstrap_inner
self.run()
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\threading.py", line 865, in run
self._target(*self._args, **self.kwargs)
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\site-packages\keyboard_init.py", line 292, in listen
_os_keyboard.listen(self.direct_callback)
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\site-packages\keyboard_winkeyboard.py", line 560, in listen
prepare_intercept(callback)
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\site-packages\keyboard_winkeyboard.py", line 553, in prepare_intercept
keyboard_hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_callback, GetModuleHandleW(NULL), NULL)
ctypes.ArgumentError: argument 3: <class 'OverflowError'>: int too long to convert

on windows10 64bit with python 3.7

Same with @lkingscott, I just tried this:

def stop():
	while True:#making a loop
	    if k.is_pressed('q'):#if key 'q' is pressed 
	        print('You Pressed A Key!')
	        global stop 
	        stop = True
	        break#finishing the loop
	    else:
	        pass

and i got

Exception in thread Thread-2:
Traceback (most recent call last):
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\threading.py", line 917, in _bootstrap_inner
self.run()
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\threading.py", line 865, in run
self._target(*self.args, **self.kwargs)
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\site-packages\keyboard__init.py", line 292, in listen
_os_keyboard.listen(self.direct_callback)
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\site-packages\keyboard_winkeyboard.py", line 560, in listen
prepare_intercept(callback)
File "C:\Users\George\AppData\Local\Programs\Python\Python37\lib\site-packages\keyboard_winkeyboard.py", line 553, in prepare_intercept
keyboard_hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_callback, GetModuleHandleW(NULL), NULL)
ctypes.ArgumentError: argument 3: <class 'OverflowError'>: int too long to convert

on windows10 64bit with python 3.7

Downgraded to Python 3.6.5 64 bit and problem goes away.

My problem is a bit more complicated...
I wrote a program, where you can select a hotkey, using the method keyboard.read_key()
Then I compiled the program with cx_Freeze. Everything worked fine, but when I started the program an error occured:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Users\Sebastian\AppData\Local\Programs\Python\Python36\lib\threading.py", line 916, in _bootstrap_inner
    self.run()
  File "C:\Users\Sebastian\AppData\Local\Programs\Python\Python36\lib\threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\Sebastian\AppData\Local\Programs\Python\Python36\lib\site-packages\keyboard\__init__.py", line 292, in listen
    _os_keyboard.listen(self.direct_callback)
  File "C:\Users\Sebastian\AppData\Local\Programs\Python\Python36\lib\site-packages\keyboard\_winkeyboard.py", line 560, in listen
    prepare_intercept(callback)
  File "C:\Users\Sebastian\AppData\Local\Programs\Python\Python36\lib\site-packages\keyboard\_winkeyboard.py", line 553, in prepare_intercept
    keyboard_hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_callback, GetModuleHandleW(NULL), NULL)
ctypes.ArgumentError: argument 3: <class 'OverflowError'>: int too long to convert

The exception was thrown when the line "pressed_key = keyboard.read_key()" was executed. I put a print statement ahead of the line and after this line. Only the first one was printed.

I am also having this issue with python3.7 on windows 10.

I am also having this issue with python3.7 on windows 10.

Same here.

I m also having this issue with python3.7 and windows 10.
Quick and dirty fix: removing the call to GetModuleHandleW seems to work for my simple use case.

_winkeyboard.py line 553:
SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_callback, GetModuleHandleW(NULL), NULL) -> SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_callback, NULL, NULL)

Thank You :) This helped me a lot!

This also fixed the issue for me with Python3.7 and Windows 10 64Bit! Thank you!