Home Backend Development Python Tutorial Python中使用PyHook监听鼠标和键盘事件实例

Python中使用PyHook监听鼠标和键盘事件实例

Jun 06, 2016 am 11:31 AM
python

PyHook是一个基于Python的“钩子”库,主要用于监听当前电脑上鼠标和键盘的事件。这个库依赖于另一个Python库PyWin32,如同名字所显示的,PyWin32只能运行在Windows平台,所以PyHook也只能运行在Windows平台。

关于PyHook的使用,在它的官方主页上就有一个简单的教程,大体上来说,可以这样使用

# -*- coding: utf-8 -*- # 
 3import pythoncom 
 4import pyHook  
 5def onMouseEvent(event): 
  
  # 监听鼠标事件   
  print "MessageName:",event.MessageName   
  print "Message:", event.Message   
  print "Time:", event.Time   
  print "Window:", event.Window   
  print "WindowName:", event.WindowName   
  print "Position:", event.Position   
  print "Wheel:", event.Wheel   
  print "Injected:", event.Injected      
  print"---"
 
  # 返回 True 以便将事件传给其它处理程序   
  # 注意,这儿如果返回 False ,则鼠标事件将被全部拦截   
  # 也就是说你的鼠标看起来会僵在那儿,似乎失去响应了   
  return True
 
23def onKeyboardEvent(event):
 # 监听键盘事件   
  print "MessageName:", event.MessageName   
  print "Message:", event.Message   
  print "Time:", event.Time   
  print "Window:", event.Window   
  print "WindowName:", event.WindowName   
  print "Ascii:", event.Ascii, chr(event.Ascii)   
  print "Key:", event.Key   
  print "KeyID:", event.KeyID   
  print "ScanCode:", event.ScanCode   
  print "Extended:", event.Extended   
  print "Injected:", event.Injected   
  print "Alt", event.Alt   
  print "Transition", event.Transition   
  print "---"   
  # 同鼠标事件监听函数的返回值   
  return True 

42def main():   
  # 创建一个“钩子”管理对象   
  hm = pyHook.HookManager()   
  # 监听所有键盘事件   
  hm.KeyDown = onKeyboardEvent   
  # 设置键盘“钩子”   
  hm.HookKeyboard()   
  # 监听所有鼠标事件   
  hm.MouseAll = onMouseEvent   
  # 设置鼠标“钩子”   
  hm.HookMouse()   
  # 进入循环,如不手动关闭,程序将一直处于监听状态   
  pythoncom.PumpMessages() 

56if __name__ == "__main__":   
  main()

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运行上面的脚本,试试看移动一下鼠标,或者按一下键盘(比如开一个记事本程序,随便写点东西),看看这个脚本输出了什么。你会发现,你的鼠标、键盘的每一个动作都被它捕捉到并打印出来了。

  另外,需要注意上面两个监听函数的返回值。这两个函数可以没有返回值(实际上返回的是 None),如果有返回值的话,如果返回值为 True,则这个脚本在捕捉、处理对应的事件后会把事件继续传递下去,如果返回值为 False,则事件将会被阻塞在这儿,具体来说,就是你的鼠标或键盘将不再有响应。

  有了 PyHook,我们可以做很多有趣的事情:比如记录一下自己一天鼠标的轨迹,再结合别的程序画一张图出来;或者记录一下你每天的按键记录,看看键盘上哪些 键你按得最多;如果你很坏,还可以把它悄悄地装在别人的电脑中,看一看那个人一天都做了些什么;当然,由于 PyHook 还可以取得当前窗口的标题(WindowName),你还可以记录下来一天之中你在各个程序上花费了多少时间,看看自己有多少时间在看网页、多少时间在聊 天、多少时间在真正地工作,呵呵。

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