如何在Windows上使用3个参数创建全局热键? [英] How to create a global hotkey on Windows with 3 arguments?
问题描述
就像Ctl,Alt +删除
Just like Ctl, Alt + delete
我想编写一个程序,该程序在python中使用带有3个或更多参数的全局热键.仅当我按下键盘上的所有三个键时,分配的功能才应执行.例如alt,windows和F3.
I want to write a program, which uses global hotkeys with 3 or more arguments in python. The assigned function should only perform when I press all three keys on my keyboard. For example alt, windows and F3.
win32con.VK_F3, win32con.MOD_WIN, win32con.VK_F5
这是我要运行的当前程序,但是其输出是:
This is the current program I want to run, however its output is:
Traceback (most recent call last):
File "C:\Python32\Syntax\hot keys\hotkeys2.py", line 41, in <module>
for id, (vk, modifiers) in HOTKEYS.items ():
ValueError: too many values to unpack (expected 2)
程序:
import os
import sys
import ctypes
from ctypes import wintypes
import win32con
byref = ctypes.byref
user32 = ctypes.windll.user32
HOTKEYS = {
1 : (win32con.VK_F3, win32con.MOD_WIN, win32con.VK_F5),
2 : (win32con.VK_F4, win32con.MOD_WIN),
3 : (win32con.VK_F2, win32con.MOD_WIN)
}
def handle_win_f3 ():
#os.startfile (os.environ['TEMP'])
print ("Hello WOrld! F3")
def handle_win_f4 ():
#user32.PostQuitMessage (0)
print ("Hello WOrld! F4")
def handle_win_f1_escape ():
print("exit")
sys.exit()
HOTKEY_ACTIONS = {
1 : handle_win_f3,
2 : handle_win_f4,
3 : handle_win_f1_escape
}
for id, (vk, modifiers) in HOTKEYS.items ():
print ("Registering id", id, "for key", vk)
if not user32.RegisterHotKey (None, id, modifiers, vk):
print ("Unable to register id", id)
try:
msg = wintypes.MSG ()
while user32.GetMessageA (byref (msg), None, 0, 0) != 0:
if msg.message == win32con.WM_HOTKEY:
action_to_take = HOTKEY_ACTIONS.get (msg.wParam)
#print(" msg.message == win32con.WM_HOTKEY:")
if action_to_take:
action_to_take ()
user32.TranslateMessage (byref (msg))
user32.DispatchMessageA (byref (msg))
finally:
for id in HOTKEYS.keys ():
user32.UnregisterHotKey (None, id)
print("user32.UnregisterHotKey (None, id)")
注册3个热键?有可能吗? 说明一个人如何使用,分配一个需要按下的键,然后分配其中两个是否需要按下的键.但是,我不会说该功能仅在同时按下所有功能时才执行.我拿了
Registering 3 hotkeys? Possible? Explains how one can use assign one key that needs to be pressed and then if two of which either needs to be pressed. However I won’t that the function only performs when all there are pressed simultaneously. I took
推荐答案
对于初学者来说,如果您需要Alt,Windows和F3,是否不需要在HOTKEYS
条目中使用win32con.VK_F3, win32con.MOD_ALT, win32con.MOD_WIN
?
For starters, if you wanted alt, windows and F3, wouldn't you need to use win32con.VK_F3, win32con.MOD_ALT, win32con.MOD_WIN
for the HOTKEYS
entry?
但是,用 Win 和 F5 F3 并没有真正意义>键.
However, it doesn't really make sense to say press F3 with modifiers of the Win and F5 key.
在线错误:
for id, (vk, modifiers) in HOTKEYS.items ():
是因为每个字典条目的值都是可变长度tuple
.这是一种对所有修饰符值进行按位 OR 进行按位运算的方法,以准备将它们作为单个参数传递给RegisterHotKey()
.
is because the value of each dictionary entry is a variable length tuple
. Here's a way to handle that which also bitwise OR s all the modifier values together in preparation for passing them as a single argument to RegisterHotKey()
.
from functools import reduce
for id, values in HOTKEYS.items ():
vk, modifiers = values[0], reduce (lambda x, y: x | y, values[1:])
print ("Registering id", id, "for key", vk)
if not user32.RegisterHotKey (None, id, modifiers, vk):
print ("Unable to register id", id)
如果您的代码正确缩进并遵循 PEP 8-Python代码样式指南建议.请考虑在将来这样做.
It would have been easier to work on your problem if your code was indented properly and followed the PEP 8 -- Style Guide for Python Code recommendations. Please consider doing so in the future.
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