我必须从具有描述的 COM API 获取事件:
HRESULT OnStatusMessage(
[in] IDispatch* pStatusMessage
);
而IStatusMessage有属性:BSTR描述、LONG Code等。
我的代码不起作用:
import msvcrt
import pythoncom
from win32com.client import DispatchWithEvents
class evt(object):
def OnConnectionLost(self):
print 'method ConnectionLost'
def OnStatusMessage(self, s):
print 'method OnStatusMessage: ' + str(s.Description)
def OnLogin(self, l):
print 'method OnLogin:', l
def OnMessage(self, msg):
print 'method OnMessage'
session = DispatchWithEvents("NiApi.SrvrSession", evt)
# login settings....
session.Connect()
while 1:
if msvcrt.kbhit():
msvcrt.getch()
session.Disconnect()
break
pythoncom.PumpWaitingMessages()
模块因回溯而失败:
Traceback (most recent call last):
File "C:\Python\AP_272\lib\site-packages\win32com\server\policy.py", line 277, in _Invoke_
return self._invoke_(dispid, lcid, wFlags, args)
File "C:\Python\AP_272\lib\site-packages\win32com\server\policy.py", line 282, in _invoke_
return S_OK, -1, self._invokeex_(dispid, lcid, wFlags, args, None, None)
File "C:\Python\AP_272\lib\site-packages\win32com\server\policy.py", line 585, in _invokeex_
return func(*args)
File "d:\niapi.py", line 13, in OnStatusMessage
print 'method OnStatusMessage' + str(s.Description)
AttributeError: 'PyIDispatch' object has no attribute 'Description'
pythoncom error: Python error invoking COM method.
为什么我不能得到这个属性?