I tried a similar setup with a sample C++ server/client and it works fine.
I haven't yet managed to determine what the differences are. Can anyone
shed some light on this?
--Alicia
On Fri, Mar 15, 2013 at 3:49 PM, Alicia Chen <owlishn...@gmail.com> wrote:
> We pass REGCLS_MULTIPLEUSE as the flag for an out-of-proc server. This
> worked fine on Windows 7, but Windows 8 seems to ignore this flag and
> attempts to launch a new instance for any call other than the first.
>
> I tested this with the sample code given
> here<http://starship.python.net/crew/theller/comtypes/server.html> with
> only a slight modification, changing the server so that it stays running
> and continually processes calls, to emulate what our program does.
>
> while True:
> comtypes.server.localserver.run([MyObjectImpl])
>
> On Win7, if you launch the server, you can run the client multiple times
> and the calls will always go to the running instance of the server. On
> Win8, the first client call behaves as expected, but all subsequent calls
> cause a new instance of the server to be launched, and CreateObject
> eventually fails with the following error:
>
> Creating MyObject object now!
> Traceback (most recent call last):
> File "tools\sample_com_obj\sample_client.py", line 13, in <module>
> x = CreateObject("MyTypelib.MyObject")
> File "\comtypes\client\__init__.py", line 235, in CreateObject
> obj = comtypes.CoCreateInstance(clsid, clsctx=clsctx,
> interface=interface)
> File "\comtypes\__init__.py", line 1145, in CoCreateInstance
> _ole32.CoCreateInstance(byref(clsid), punkouter, clsctx, byref(iid),
> byref(p))
> File "_ctypes/callproc.c", line 936, in GetResult
> WindowsError: [Error -2146959355] Server execution failed
>
> (That error number is 0x80080005 for marginally more readability)
>
> Both server and client files attached for your reference.
>
> Is anyone else experiencing this? Am I doing something horribly wrong?
>
> --Alicia
>
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