Problem setting COM property using win32com

[Mark Hammond]

The problem will be that the COM object you are using does not report 
any type information at runtime (it should).  Thus, we have no way of 
associating the object with the makepy data.


Green, Gregory P wrote:
> I missed the last line in your example code:
> 
> so if I do (using the EnsureModule line):
> 
> prmidattrs = MyModule.ISmRecordList()
> 
> I get:
> Traceback (most recent call last):   
> 	File "example.py", line 43, in ?     
> 		prmidattrs = MyModule.ISmRecordList()   
> 	File "C:\PYTHON22\lib\site-packages\win32com\client\__init__.py", line 310, in __init__     
> 		oobj = pythoncom.new(self.CLSID) pywintypes.com_error: (-2147221164, 'Class not registered', None, None) 
> pywintypes.com_error: (-2147221164, 'Class not registered', None, None) 
> 
> If I use 
> prmidattrs = MyModule.SmRecordList()

What will generally work is to make sure that the class name you are 
using is an *interface* (rather than a CoClass), and you can pass an 
existing COM object - eg:

ob = win32com.client.Dispatch("whatever")
# Should be early-bound, but it isn't - convert
ob = MyModule._SmRecordList() # the interface, not CoClass

You can use this technique regardless of how you were handed the object. 
  If you have access to the source of the object or the developers, ask 
them to implement the typeinfo classes for their objects (they already 
have the type info there, it just isn't exposed via their runtime objects)

Mark.