Reverse Mouse Scroll Direction

This script edits the Windows registry and turns on the FlipFlopWheel attribute for all USB HID devices. To run this script, save this script as fixScroll.py file, and execute it from the windows command prompt running with administrative privileges.

Also, Python 3 should be already pre-installed with Windows 10+, so there will be no need to install Python 3.

from winreg import *
import os

def is_admin():
    if os.name == 'nt':
        try:
            # only windows users with admin privileges can read the C:\windows\temp
            temp = os.listdir(os.sep.join([os.environ.get('SystemRoot','C:\\windows'),'temp']))
        except:
            return False
        else:
            return True
    else:
        print('This is a windows script.')
        exit(1)

"""print r"*** Reading from HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\HID ***" """
def main():
    if not is_admin():
        print('Must have admin privileges to run this script.')
        exit(1)
    aReg = ConnectRegistry(None,HKEY_LOCAL_MACHINE)

    FLIP_FLOP_VALUE = 1


    aKey = OpenKey(aReg, r"SYSTEM\CurrentControlSet\Enum\HID")

    for i in range(1024):
        try:
            asubkey_name = EnumKey(aKey, i)
            asubkey = OpenKey(aKey, asubkey_name)
            for j in range(1024):
                try:
                    bsubkey_name = EnumKey(asubkey, j)
                    bsubkey = OpenKey(asubkey, bsubkey_name)
                    for k in range(1024):
                        try:
                            csubkey_name = EnumKey(bsubkey, k)
                            if csubkey_name != 'Device Parameters':
                                continue
                            csubkey = OpenKey(bsubkey, csubkey_name, 0, KEY_ALL_ACCESS)
                            val = QueryValueEx(csubkey, "FlipFlopWheel")

                            print((asubkey_name, bsubkey_name, csubkey_name))
                            SetValueEx(csubkey, 'FlipFlopWheel', 0, REG_DWORD, FLIP_FLOP_VALUE)
                            CloseKey(csubkey)
                            print('Set FFW : %s' % FLIP_FLOP_VALUE)

                        except error as e:
                            if 'No more data' in e.strerror:
                                break
                            continue
                except error as e:
                    if 'No more data' in e.strerror:
                        break
                    continue
        except error as e:
            if 'No more data' in e.strerror:
                break
            continue

if __name__ == "__main__":
    main()

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