Block pyhook from so-generated keystrokes?
keyboard, keyboard-shortcuts, pyhook, python, windows
Solution
If you're insterested in Windows only, you can use win API, e.g. via ctypes:
>>> from ctypes import windll
>>> windll.user32.RegisterHotKey(0, -1, 0x0002, 0x5a)
After running these lines of code Ctrl (code = 0x0002) + Z (code = 0x5a) combination doesn't work any more in Python REPL.
So you should better look at what windows are those hotkey registered. More information you can find in MSDN: http://msdn.microsoft.com/en-us/library/windows/desktop/ms646309(v=vs.85).aspx
Problem
I'm using `pyhook` and `pyhk` to map keystrokes on a windows XP machine, and it works fine except for when the keystroke (say, ctrl+z) already exists in the application. In that case, the ctrl+z passes to the application and triggers the action that has been mapped to it. If you are familiar with `autohotkey`, note that `autohotkey` gets around this by defining hotkeys that can optionally be passed to the underlying application. Here's a bit of codes that gets at the idea. Note that I'm trying to keep track of when the ctrl key is down. ``` import pythoncom, pyHook control_down = False def OnKeyboardEvent_up(event): global control_down if event.Key=='Lcontrol' or event.Key=='Rcontrol': control_down=False return True def OnKeyboardEvent(event,action=None,key='Z',context=None): global control_down if event.Key=='Lcontrol' or event.Key=='Rcontrol': control_down=True if control_down and event.Key==key: print 'do something' return False if event.Key=='Pause': win32gui.PostQuitMessage(1) return False # return True to pass the event to other handlers return True if __name__ == '__main__': hm = pyHook.HookManager() hm.KeyDown = OnKeyboardEvent hm.KeyUp = OnKeyboardEvent_up hm.HookKeyboard() # set the hook pythoncom.PumpMessages() # wait forever ``` Any help appreciated. Thanks!