def _stop(self):
"""Stop mmkey monitoring. Can be called multiple times.
Might raise WindowsError.
"""
if self._hhook is not None:
if winapi.UnhookWindowsHookEx(self._hhook) == 0:
raise winapi.WinError()
self._hhook = None
self._kb_proc_ptr = None
def _start(self):
"""Start mmkey monitoring.
Might raise WindowsError.
"""
kb_proc_ptr = winapi.LowLevelKeyboardProc(self._kb_proc)
hhook = winapi.SetWindowsHookExW(winapi.WH_KEYBOARD_LL, kb_proc_ptr,
None, 0)
if not hhook:
raise winapi.WinError()
self._kb_proc_ptr = kb_proc_ptr
self._hhook = hhook