From terry.y.davis at gmail.com  Mon Jan 27 18:33:15 2020
From: terry.y.davis at gmail.com (Terry Davis)
Date: Mon, 27 Jan 2020 15:33:15 -0800
Subject: [python-win32] [win32com] Meaning of "TypeError: Only com_record
 objects can be used as records"?
Message-ID: <CAEziGD-iYQNDwh2m681XSjbXhcsb55qKqMurc5V2OFHsPHZb3g@mail.gmail.com>

Hi all,

I tried searching the mailing list archives for "com_record" but didn't
find anything relevant.

For context, I'm trying to access a COM interface defined in a .tlb file.

Here's a skeleton of the script I'm using to expose this interface:
import pythoncom
from win32com.client import gencache

lib_GUID = "{<GUID>}"
lib_major = 1
lib_minor = 0
lib_pyITypelib = pythoncom.LoadRegTypeLib(lib_GUID, lib_major, lib_minor)
lib = gencache.EnsureModuleForTypelibInterface(_lib_pyITypelib)

ccs = lib.CControlServer()  # CControlServer is a CoClass
eid, *other = ccs.LoadExperiment(**path to file**)  # Works
ccs.GetSoftwareInfo()  # Fails with exception below.
ccs.GetSolvent(eid)  # also fails

I can't dig down in the debugger to find the source of the exception, so
I'm hoping someone here can help!


Exception:

def GetSoftwareInfo(self, info=pythoncom.Missing):


<ipython-input-8-7304ad54d54a> in <module>
----> 1 ccs.GetSoftwareInfo()

~\AppData\Local\Temp\gen_py\3.7\<GUID>x0x1x0.py in GetSoftwareInfo(self,
info)
    279         def GetSoftwareInfo(self, info=pythoncom.Missing):
    280                 'method GetSoftwareInfo'
--> 281                 return self._ApplyTypes_(13, 1, (24, 0), ((36,
2),), 'GetSoftwareInfo', None,info
    282                         )
    283

C:\Python37\lib\site-packages\win32com\client\__init__.py in
_ApplyTypes_(self, dispid, wFlags, retType, argTypes, user, resultCLSID,
*args)
    465         def _ApplyTypes_(self, dispid, wFlags, retType, argTypes,
user, resultCLSID, *args):
    466                 return self._get_good_object_(
--> 467                         self._oleobj_.InvokeTypes(dispid, 0,
wFlags, retType, argTypes, *args),
    468                         user, resultCLSID)
    469

TypeError: Only com_record objects can be used as records
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From terry.y.davis at gmail.com  Mon Jan 27 19:31:08 2020
From: terry.y.davis at gmail.com (Terry Davis)
Date: Mon, 27 Jan 2020 16:31:08 -0800
Subject: [python-win32] [win32com] Meaning of "TypeError: Only
 com_record objects can be used as records"?
In-Reply-To: <CAEziGD-iYQNDwh2m681XSjbXhcsb55qKqMurc5V2OFHsPHZb3g@mail.gmail.com>
References: <CAEziGD-iYQNDwh2m681XSjbXhcsb55qKqMurc5V2OFHsPHZb3g@mail.gmail.com>
Message-ID: <CAEziGD_zuJo1hdMGJ-P-PD1u--hYyssi5M+qyBBPAz8NL8BYrA@mail.gmail.com>

Update: The functions that don't work return Record types, and the ones
that do work just return multiple values (a tuple).
Do I need to pass in the appropriate Record type (or an empty record)
during each function call?
If so, how do I get to the Record types that I see in the python object
browser (python -m win32com.client.combrowse)?

Thanks,
Terry

On Mon, Jan 27, 2020 at 3:33 PM Terry Davis <terry.y.davis at gmail.com> wrote:

> Hi all,
>
> I tried searching the mailing list archives for "com_record" but didn't
> find anything relevant.
>
> For context, I'm trying to access a COM interface defined in a .tlb file.
>
> Here's a skeleton of the script I'm using to expose this interface:
> import pythoncom
> from win32com.client import gencache
>
> lib_GUID = "{<GUID>}"
> lib_major = 1
> lib_minor = 0
> lib_pyITypelib = pythoncom.LoadRegTypeLib(lib_GUID, lib_major, lib_minor)
> lib = gencache.EnsureModuleForTypelibInterface(_lib_pyITypelib)
>
> ccs = lib.CControlServer()  # CControlServer is a CoClass
> eid, *other = ccs.LoadExperiment(**path to file**)  # Works
> ccs.GetSoftwareInfo()  # Fails with exception below.
> ccs.GetSolvent(eid)  # also fails
>
> I can't dig down in the debugger to find the source of the exception, so
> I'm hoping someone here can help!
>
>
> Exception:
>
> def GetSoftwareInfo(self, info=pythoncom.Missing):
>
>
> <ipython-input-8-7304ad54d54a> in <module>
> ----> 1 ccs.GetSoftwareInfo()
>
> ~\AppData\Local\Temp\gen_py\3.7\<GUID>x0x1x0.py in GetSoftwareInfo(self,
> info)
>     279         def GetSoftwareInfo(self, info=pythoncom.Missing):
>     280                 'method GetSoftwareInfo'
> --> 281                 return self._ApplyTypes_(13, 1, (24, 0), ((36,
> 2),), 'GetSoftwareInfo', None,info
>     282                         )
>     283
>
> C:\Python37\lib\site-packages\win32com\client\__init__.py in
> _ApplyTypes_(self, dispid, wFlags, retType, argTypes, user, resultCLSID,
> *args)
>     465         def _ApplyTypes_(self, dispid, wFlags, retType, argTypes,
> user, resultCLSID, *args):
>     466                 return self._get_good_object_(
> --> 467                         self._oleobj_.InvokeTypes(dispid, 0,
> wFlags, retType, argTypes, *args),
>     468                         user, resultCLSID)
>     469
>
> TypeError: Only com_record objects can be used as records
>
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From Frank.Degerdon at ps.rolls-royce.com  Tue Jan 28 02:07:45 2020
From: Frank.Degerdon at ps.rolls-royce.com (Frank.Degerdon at ps.rolls-royce.com)
Date: Tue, 28 Jan 2020 07:07:45 +0000
Subject: [python-win32] Problem with pywin32 and Python 3.8 on Windows
 Server 2016
Message-ID: <8801b1a40b8a4cfcab98679857540368@ps.rolls-royce.com>

Hello,

i have implemented a windows service in the past with python 2.7 and 3.7. I worked fine with this versions. Now I have to switch the version to 3.8.
And with this environment, I have problems.


Below find the sourcecode for my implementation to install an run the service:

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""Run application as windows service

Usage : python <script name>.py install
Usage : python <script name>.py start
Usage : python <script name>.py stop
Usage : python <script name>.py remove

Based on demos of Mark Hammond's pywin32 package and the following web sites:
https://code.activestate.com/recipes/576451-how-to-create-a-windows-service-in-python/
http://www.codeproject.com/Articles/1115336/Using-Python-to-Make-a-Windows-Service
"""

import sys
import servicemanager
import win32serviceutil
import win32event

import app
from app import config


class SRMWindchillExportService(win32serviceutil.ServiceFramework):
    _svc_name_ = "PythonServiceTeset3.8"
    _svc_display_name_ = " PythonServiceTeset3.8"
    _svc_description_ = " PythonServiceTeset3.8"


    # Installation of service creates Windows System log event entry:
    #   Source : ServiceControlManager
    #   Event ID: 7045


    def __init__(self, args):
        win32serviceutil.ServiceFramework.__init__(self, args)
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)

    def SvcStop(self):
        win32event.SetEvent(self.hWaitStop)
        # Create Event Log entry:
        #    Level:    Information
        #    Source:   self._svc_name_
        #    Event ID: 4100
        servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
                              servicemanager.PYS_SERVICE_STOPPED,
                              (self._svc_name_, ''))

    def SvcDoRun(self):
        # Create Event Log entry:
        #    Level:    Information
        #    Source:   self._svc_name_
        #    Event ID: 4098
        servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
                              servicemanager.PYS_SERVICE_STARTED,
                              (self._svc_name_, ''))

        self.timeout = config.ServiceTimeout  # time value in milliseconds

        msg = "Service: {0}\n" \
              "------------------------------------------------------\n" \
              "Repeating time: every {1} milliseconds.\n".format(self._svc_name_, self.timeout)
        servicemanager.LogInfoMsg(msg)

        application = app.Application()

        while 1:
            # Do the job.
            # If an exception occurs in app.run, the service would crash.
            # Therefore we have to catch all exceptions to ensure the
            # service keeps running.
            # In case of an exception write an error message to event log.
            try:
                application.run()
            except:
                # In case of any exception, report an error to event log,
                # but do not stopp the service!
                # Info is reported with "Source: _svc_name_" and Event ID: 255
                servicemanager.LogErrorMsg("ERROR in {0}: {1}".format(self._svc_name_, sys.exc_info()))


            # Wait for service stop signal, if I timeout, loop again
            rc = win32event.WaitForSingleObject(self.hWaitStop, self.timeout)
            # Check to see if self.hWaitStop happened
            if rc == win32event.WAIT_OBJECT_0:
                # Stop signal encountered. Break the loop.
                break
            else:
                # Loop again
                pass


if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(SRMWindchillExportService)


The problem occurs at the start of the service and shows the following errormessage:
[cid:image001.png at 01D5D5B1.D202E370]

In the eventviewer are 3 events with error:
[cid:image002.png at 01D5D5B1.D202E370]


For this error, I found a case at Microsoft:
https://answers.microsoft.com/en-us/windows/forum/windows_10-security/event-id-10016-runtime-broker/18c291c6-f2a1-4f3c-b4ad-2b7ff59fd9f9?page=3

But this didn't help to solve the issue. Anyone have had this problem before?

Thanks.


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From terry.y.davis at gmail.com  Tue Jan 28 16:06:57 2020
From: terry.y.davis at gmail.com (Terry Davis)
Date: Tue, 28 Jan 2020 13:06:57 -0800
Subject: [python-win32] [win32com] Meaning of "TypeError: Only
 com_record objects can be used as records"?
In-Reply-To: <CAEziGD_zuJo1hdMGJ-P-PD1u--hYyssi5M+qyBBPAz8NL8BYrA@mail.gmail.com>
References: <CAEziGD-iYQNDwh2m681XSjbXhcsb55qKqMurc5V2OFHsPHZb3g@mail.gmail.com>
 <CAEziGD_zuJo1hdMGJ-P-PD1u--hYyssi5M+qyBBPAz8NL8BYrA@mail.gmail.com>
Message-ID: <CAEziGD8ub_H=z9aBw994N5gEcsAWg0-L2+4Jbkp8SmJZYuJZAw@mail.gmail.com>

Update 2: After discovering the `pythoncom.GetRecordFromGuids` and
`.GetRecordFromTypeInfo` (with the comment: "This function will fail if the
specified type info does not have a guid defined").

I found that the Record types don't appear to have a GUID.
lib_pyITypelib.GetDocumentation(4) = ('SoftwareInfo', None, 0, None)
lib_pyITypelib.GetTypeInfo(4).GetTypeAttr().iid
= IID('{00000000-0000-0000-0000-000000000000}')

So, is it possible to create a Record object without a GUID?
(Assuming that passing a Record object `ccs.GetSoftwareInfo(info=<some
Record Object>)` is the correct approach here.)

I also tried assigning a `pythoncom.CreateGuid() to the `iid` attribute
above, but `GetRecordFromGuids` failed with `pywintypes.com_error:
(-2147319765, 'Element not found.', None, None)`. So I assume the GUID
assignment didn't make it outside of python into COM-space.

P.S.
I also found this old thread:
https://grokbase.com/t/python/python-win32/0821b2n4e5/how-to-create-a-com-record
which appears to be related to my problem, but no solutions were identified.
(I tried the `DumbDispatch` solution; it didn't work).


On Mon, Jan 27, 2020 at 4:31 PM Terry Davis <terry.y.davis at gmail.com> wrote:

> Update: The functions that don't work return Record types, and the ones
> that do work just return multiple values (a tuple).
> Do I need to pass in the appropriate Record type (or an empty record)
> during each function call?
> If so, how do I get to the Record types that I see in the python object
> browser (python -m win32com.client.combrowse)?
>
> Thanks,
> Terry
>
> On Mon, Jan 27, 2020 at 3:33 PM Terry Davis <terry.y.davis at gmail.com>
> wrote:
>
>> Hi all,
>>
>> I tried searching the mailing list archives for "com_record" but didn't
>> find anything relevant.
>>
>> For context, I'm trying to access a COM interface defined in a .tlb file.
>>
>> Here's a skeleton of the script I'm using to expose this interface:
>> import pythoncom
>> from win32com.client import gencache
>>
>> lib_GUID = "{<GUID>}"
>> lib_major = 1
>> lib_minor = 0
>> lib_pyITypelib = pythoncom.LoadRegTypeLib(lib_GUID, lib_major, lib_minor)
>> lib = gencache.EnsureModuleForTypelibInterface(_lib_pyITypelib)
>>
>> ccs = lib.CControlServer()  # CControlServer is a CoClass
>> eid, *other = ccs.LoadExperiment(**path to file**)  # Works
>> ccs.GetSoftwareInfo()  # Fails with exception below.
>> ccs.GetSolvent(eid)  # also fails
>>
>> I can't dig down in the debugger to find the source of the exception, so
>> I'm hoping someone here can help!
>>
>>
>> Exception:
>>
>> def GetSoftwareInfo(self, info=pythoncom.Missing):
>>
>>
>> <ipython-input-8-7304ad54d54a> in <module>
>> ----> 1 ccs.GetSoftwareInfo()
>>
>> ~\AppData\Local\Temp\gen_py\3.7\<GUID>x0x1x0.py in GetSoftwareInfo(self,
>> info)
>>     279         def GetSoftwareInfo(self, info=pythoncom.Missing):
>>     280                 'method GetSoftwareInfo'
>> --> 281                 return self._ApplyTypes_(13, 1, (24, 0), ((36,
>> 2),), 'GetSoftwareInfo', None,info
>>     282                         )
>>     283
>>
>> C:\Python37\lib\site-packages\win32com\client\__init__.py in
>> _ApplyTypes_(self, dispid, wFlags, retType, argTypes, user, resultCLSID,
>> *args)
>>     465         def _ApplyTypes_(self, dispid, wFlags, retType, argTypes,
>> user, resultCLSID, *args):
>>     466                 return self._get_good_object_(
>> --> 467                         self._oleobj_.InvokeTypes(dispid, 0,
>> wFlags, retType, argTypes, *args),
>>     468                         user, resultCLSID)
>>     469
>>
>> TypeError: Only com_record objects can be used as records
>>
>
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