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[Windows] Added support of Extended-Key Flag KEYEVENTF_EXTENDEDKEY #888

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[Windows] Added support of Extended-Key Flag KEYEVENTF_EXTENDEDKEY #888

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24 changes: 17 additions & 7 deletions pyautogui/_pyautogui_win.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
import ctypes
import ctypes.wintypes
import pyautogui
import win32api
from pyautogui import LEFT, MIDDLE, RIGHT

import sys
Expand Down Expand Up @@ -49,6 +50,8 @@

# Documented here: http://msdn.microsoft.com/en-us/library/windows/desktop/ms646304(v=vs.85).aspx
KEYEVENTF_KEYDOWN = 0x0000 # Technically this constant doesn't exist in the MS documentation. It's the lack of KEYEVENTF_KEYUP that means pressing the key down.
# Documented here: https://learn.microsoft.com/en-us/windows/win32/api/winuser/ns-winuser-keybdinput, table: https://learn.microsoft.com/en-us/windows/win32/inputdev/about-keyboard-input#extended-key-flag
KEYEVENTF_EXTENDEDKEY = 0x0001
KEYEVENTF_KEYUP = 0x0002

# Documented here: http://msdn.microsoft.com/en-us/library/windows/desktop/ms646270(v=vs.85).aspx
Expand Down Expand Up @@ -233,6 +236,8 @@ class _I(ctypes.Union):
'launchapp1': 0xb6, # VK_LAUNCH_APP1
'launchapp2': 0xb7, # VK_LAUNCH_APP2
})

extendedKeys = {0xa5, 0x2e, 0x2d, 0x22, 0x21, 0x24, 0x23, 0x25, 0x27, 0x26, 0x28}

# There are other virtual key constants that are not used here because the printable ascii keys are
# handled in the following `for` loop.
Expand Down Expand Up @@ -280,16 +285,18 @@ def _keyDown(key):
needsShift = True
"""
mods, vkCode = divmod(keyboardMapping[key], 0x100)
dwFlags = KEYEVENTF_EXTENDEDKEY if vkCode in extendedKeys else 0
bScan = win32api.MapVirtualKey(vkCode, 0)

for apply_mod, vk_mod in [(mods & 4, 0x12), (mods & 2, 0x11),
(mods & 1 or needsShift, 0x10)]: #HANKAKU not supported! mods & 8
if apply_mod:
ctypes.windll.user32.keybd_event(vk_mod, 0, KEYEVENTF_KEYDOWN, 0) #
ctypes.windll.user32.keybd_event(vkCode, 0, KEYEVENTF_KEYDOWN, 0)
ctypes.windll.user32.keybd_event(vk_mod, bScan, dwFlags | KEYEVENTF_KEYDOWN, 0) #
ctypes.windll.user32.keybd_event(vkCode, bScan, dwFlags | KEYEVENTF_KEYDOWN, 0)
for apply_mod, vk_mod in [(mods & 1 or needsShift, 0x10), (mods & 2, 0x11),
(mods & 4, 0x12)]: #HANKAKU not supported! mods & 8
if apply_mod:
ctypes.windll.user32.keybd_event(vk_mod, 0, KEYEVENTF_KEYUP, 0) #
ctypes.windll.user32.keybd_event(vk_mod, bScan, dwFlags | KEYEVENTF_KEYUP, 0) #


def _keyUp(key):
Expand Down Expand Up @@ -320,16 +327,19 @@ def _keyUp(key):
needsShift = True
"""
mods, vkCode = divmod(keyboardMapping[key], 0x100)

dwFlags = KEYEVENTF_EXTENDEDKEY if vkCode in extendedKeys else 0
bScan = win32api.MapVirtualKey(vkCode, 0)

for apply_mod, vk_mod in [(mods & 4, 0x12), (mods & 2, 0x11),
(mods & 1 or needsShift, 0x10)]: #HANKAKU not supported! mods & 8
if apply_mod:
ctypes.windll.user32.keybd_event(vk_mod, 0, 0, 0) #
ctypes.windll.user32.keybd_event(vkCode, 0, KEYEVENTF_KEYUP, 0)
ctypes.windll.user32.keybd_event(vk_mod, bScan, dwFlags, 0) #
dwFlags |= KEYEVENTF_KEYUP
ctypes.windll.user32.keybd_event(vkCode, bScan, dwFlags, 0)
for apply_mod, vk_mod in [(mods & 1 or needsShift, 0x10), (mods & 2, 0x11),
(mods & 4, 0x12)]: #HANKAKU not supported! mods & 8
if apply_mod:
ctypes.windll.user32.keybd_event(vk_mod, 0, KEYEVENTF_KEYUP, 0) #
ctypes.windll.user32.keybd_event(vk_mod, bScan, dwFlags, 0) #


def _position():
Expand Down