pycom: how to expose Python 2.3 property instance as a VARIANT?

[Lijun Qin]

Make your class derived from object, such as 
class D(object):
    def __init__



eternalsquire at comcast.net (The Eternal Squire) wrote in message news:<904dab11.0310111959.1b2f7838 at posting.google.com>...
> Hi everyone,
> 
> I am wanting to write a Python COM server with a data member created
> by using the new Python 2.3
> property() built-in function.    When I attempt to access the member
> through a client, I get
> the ComError message saying that I cannot convert type property into a
> VARIANT, so it looks
> like the default exposure mechanism in pythoncom.dll is not working
> properly.
>  
> Do you have any suggestions as to how I can wrap the property
> properly?  I'd much rather not create a
> nonstandard pythoncom.dll to do the conversion unless I absolutely
> must.
> 
> Thanks:
> 
> The Eternal Squire
> 
> (see below an example sketch of what I intend.  I'm well aware that I
> need the CLSID, PROGID, and other attributes in my example, let's
> assume I did that and that I also know how to register a COM server).
> 
> ---- cut here ---
>  
> class Friend:
>     'an object that modifies or uses the object which owns it'
>     def __init__ (self, top):
>       self.top = top
>  
> class SmartValue (Friend):
>   'an example of a managed attribute of a COM interface'
>   KEY = 'x'
>  
>   def __init__ (self, top):
>      Friend.__init__ (self, top):  
>      self.storage = 0
>      setattr (self.top, KEY, property (self.get, self.set))
>      self.top._public_attrs_ += [ self.KEY ]
>  
>   def get (self):
>     return self.storage
>  
>   def set (self, value):
>     self.storage = value
>  
>  
> class COMInterface:
>    ' an example COM interface template'
>  
>    ELEMENTS = [ ]
>  
>    def __init__ (self):
>      [ e (self) for e in self.ELEMENTS ]
>  
>  
> class MyInterface (COMInterface):
>     ' an example specific COM interface'
>  
>     ELEMENTS = [ SmartValue ]
>  
> if __name__ == '__main__':
>    'code to register MyInterface would follow here'
>   
> --- cut here ---