[pywin32-bugs] [ pywin32-Bugs-978096 ] Problem with nested dispatches in build 201

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Bugs item #978096, was opened at 2004-06-23 09:54
Message generated for change (Comment added) made by gtegos
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: George Tegos (gtegos)
Assigned to: Nobody/Anonymous (nobody)
Summary: Problem with nested dispatches in build 201

Initial Comment:
We have an application which exposes an automation 
object Application. One member of Application is Zip 
which is another automation object which has a 
property Recursive of type BOOL. In a Python script we 
have:
Application.Zip.Recursive = 1
With build 201 we get a COM error saying that we have 
a wrong number of parameters.
The same was working fine with build 200


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>Comment By: George Tegos (gtegos)
Date: 2006-02-20 09:33

Message:
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user_id=464497

After a long while, I am reopening this issue, as I am 
trying to upgrade from pythonwin 200 to pythonwin207 for 
Python 2.3. The problem still exists.

I attach the file Problem.odl, in which I define two 
interfaces, IApplicationAuto and IZipAuto. The interface 
IApplicationAuto has a member Zip, which returns an object 
implementing the IZipAuto interface. When setting, from a 
script, Application.Zip.NoDirectoryEntries = 0 I am getting 
the following error:
Source line: Application.Zip.NoDirectoryEntries = 0
Traceback...
c:\python\lib\site-packages\win32com\client\dynamic.py 
line 528 in __setattr__ 
self._oleobj_.Invoke(entry.dispid, 0, invoke_type, 0, value)
COM Error: Invalid number of parameters (0x8002000e...)

The Application automation class is implemented in MFC 
using 
BEGIN_DISPATCH_MAP(CApplicationAuto, CHHCmdTarget)
	//{{AFX_DISPATCH_MAP(CApplicationAuto)
	DISP_PROPERTY_EX(CApplicationAuto, "SerialNumber", 
GetSerialNumber, SetNotSupported, VT_BSTR)
	DISP_PROPERTY_EX(CApplicationAuto, "Zip", GetZip, 
SetZip, VT_DISPATCH)
...
END_DISPATCH_MAP()



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Comment By: George Tegos (gtegos)
Date: 2004-10-12 09:31

Message:
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I attach a strip down version of the odl file describing 
Application and Zip objects. 
I debugged the code using versions 203 and 200. The 
problem seems to be in CDispatch.__setattr__ 
if self.__LazyMap__(attr):
  # Check the "general" property map.
  if self._olerepr_.propMap.has_key(attr):
    entry = self._olerepr_.propMap[attr]
    invoke_type = _GetDescInvokeType ...
    self._oleobj_.Invoke(entry.dispid, 0, invoke_type, 0, value)
    return

invoke_type has the value of 3 in version 203 instead of 4 
(pythoncom.INVOKE_PROPERTYPUT) in version 200, which 
works.


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Comment By: Mark Hammond (mhammond)
Date: 2004-10-09 01:48

Message:
Logged In: YES 
user_id=14198

Could you please provide a sample or some way for me to
repro this?

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