在Windows上,如何安装最低级别的全局键盘挂钩？

Question

我正在Windows上使用python中的自定义街机启动器.我想选择系统和游戏,然后启动模拟器 - 并需要某个键组合来杀死模拟器.在使用随机应用程序进行测试时,我的所有关键钩子都可以工作,但是当我实际启动模拟器(例如Nestopia)时,我的键钩子无法触发.我目前正在使用RegisterHotKey,它获取事件而不是热键.任何人都知道如何在Nestopia之前安装足够低的东西以实际获得事件？这是我的代码:

import ctypes
import win32con
from ctypes import wintypes
from ctypes import byref
user32 = ctypes.windll.user32

class SimpleKeyboardHook:

  def getNextId(self):
    SimpleKeyboardHook._id += 1
    return SimpleKeyboardHook._id

  # modifiers is a bitmask with win32con.[MOD_SHIFT, MOD_ALT, MOD_CONTROL, MOD_WIN]
  def waitFor(self, key, modifiers):

    # coerce to 0 if necessary
    modifiers = modifiers or 0

    id = self.getNextId()
    hk = user32.RegisterHotKey(None, id, modifiers, key)
    print "register hotkey: ",hk
    if not hk:
      print "Unable to register hotkey for key ", key
      return False

    print "registered id", id

    try:
      msg = wintypes.MSG()
      while user32.GetMessageA(byref(msg), None, 0, 0) != 0:
        print "got message",msg.message,"which is not",win32con.WM_HOTKEY
        if msg.message == win32con.WM_HOTKEY:
          print "got hotkey"
          if msg.wParam == id:
            print "found proper hotkey"
            return True

        user32.TranslateMessage(byref(msg))
        user32.DispatchMessageA(byref(msg))
    finally:
      user32.UnregisterHotKey(None, id)

    return False

SimpleKeyboardHook._id = 0

Answer 1

你绝对应该看看 user32 的 SetWindowsHookEx。这些函数允许您注册全局键盘挂钩。（只是不要忘记通过调用 CallNextHookEx 来传递它们。）

链接：http ://msdn.microsoft.com/en-us/library/ms644990(v=vs.85).aspx

不过，我不知道如何从 python 中做到这一点，抱歉。