Hello
----- Original Message -----
From: "bob gailer" <[EMAIL PROTECTED]>
To: "Albert Strasheim" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Friday, January 04, 2008 11:15 AM
Subject: Re: [python-win32] COM automation: problem accessing property of
derived object obtained from collection
> Albert Strasheim wrote:
>> Hello all
>>
>> I'm new to the world of COM automation with Python, so please bear with
>> me.
>>
>> I'm trying to automate Golden Software's Surfer 8 [1] using Python.
>>
>> The basics seems to be working fine, but I'm running into a problem when
>> dealing with a collection containing instances of an object derived from
>> a base object.
>>
>> The code looks as follows. Judging from the VBScript examples included
>> with Surfer
> Which VBScript examples? The one I looked at (CONTOURFILL.BAS) uses
> Overlays to access Levels:
>
> Set MapFrame = Doc.Shapes.AddContourMap(GridFileName:=Path+"demogrid.grd")
> 'Fill Contours
> MapFrame.Overlays(1).FillContours = True
> 'Set the colors to be gradational from green to blue
> Set Levels = MapFrame.Overlays(1).Levels
>
>> , it should work.
>>
>> from win32com.client import constants, Dispatch
>> srf = Dispatch("Surfer.Application")
>> plot = srf.Documents.Add(constants.srfDocPlot)
>> mapframe = plot.Shapes.AddContourMap(GridFileName=outGrid)
>> contourmap = mapframe .Overlays.Item(1)
>> # the next line breaks
>> print contourMap.Levels
As far as I can tell, the VBScript example you posted does the same thing as
my Python code.
Translating the CONTOURFILL.BAS to Python:
from win32com.client import constants, Dispatch
srf = Dispatch("Surfer.Application")
doc = srf.Documents.Add(constants.srfDocPlot)
mapFrame = doc.Shapes.AddContourMap(GridFileName=outGrid)
mapFrame.Overlays(1).FillContours = True
This fails with:
Traceback (most recent call last):
File "surfer.py", line 8, in <module>
mapFrame.Overlays(1).FillContours = True
File "C:\Python25\Lib\site-packages\win32com\client\__init__.py", line
462, in __setattr__
raise AttributeError, "'%s' object has no attribute '%s'" % (repr(self),
attr)
AttributeError: '<win32com.gen_py.Surfer 8 Type Library.IShape instance at
0x22543976>' object has no attribute 'FillContours'
Looks like the same issue as with Levels.
Cheers,
Albert
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