Re: [python-win32] win32com does not recognise an Interface for events

[Len Remmerswaal]

On 20:59, Thomas Heller wrote: OLE Viewer finds a second interface IS7ProSimEvents that is made the default source makepy does not recognise IS7ProSimEvents as an interface at all. It would appear that makepy is excluding non-dual interfaces, and that the integration with the 'universal' support for vtable interfaces isn't complete. You could try comtypes: it should support custom interfaces and custom event interfaces. 'easy_install comtypes==dev' to get the SVN version. Thomas Wow. The battle of the packages is afoot :-) Thanks for the hint: I did not know about this package. I have given it a try. There are a few things that appear strange to me. At first I tried this: import comtypes.client as cc class testVehikel(cc.CreateObject(progid), eventsClass):     def __init__(self):     (...)   This produced the following exception:     class testVehikel(cc.CreateObject(progid), eventsClass): TypeError: Error when calling the metaclass bases     __init__ expected at most 1 arguments, got 3 I have no clue where this comes from, not even after trying to step towards the error. Does anyone? So I did it slightly different: import comtypes.client as cc import comtypes.gen.S7PROSIMLib as S7PS class testVehikel:     def __init__(self, progid, eventsClass):         self.intf = cc.CreateObject(progid)         self.cb = eventsClass         cc.GetEvents(self.intf, self.cb, S7PS.IS7ProSimEvents)         (...)     (.... other methods ....)     def __del__(self):         (.... some cleaning up ....)        This runs, except that the __del__ method gets called before I expect it, and after it is called the other testVehikel  methods still run fine. How is this possible? Is any of the above approaches to be preferred? Should I use yet another approach? I final question: What should the event routines look like? Currently they look like this: class testCalls2:     def ScanFinished(self, this, ScanInfo):         print "Event: ScanFinished: ", ScanInfo     (....) on the basis of <clsid>.py, the result of GetMessage, saying this: IS7ProSimEvents._methods_ = [     COMMETHOD([helpstring(u'Fired when single scan is done.')], HRESULT, 'ScanFinished',               ( [], VARIANT, 'ScanInfo' )),     (....) I thought to have read somewhere that I need a (not further needed) 'this' argument. Should I do it like this or should the 'this' argument go? So far I have not been able to trigger any of these routines and make them do their printing. Len.

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