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, 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
contourmap should contain a Surfer.IContourMap object, which is derived from
the Surfer.IShape object. I can see in the GUI that the contour map is
created, so I'm pretty sure everything is working up to this point.
Now, IContourMap has a Levels property that IShape doesn't have. When I try
to access this property, I get the following exception:
Traceback (most recent call last):
File "surfer.py", line 7, in <module>
print contourMap.Levels
File "C:\Python25\Lib\site-packages\win32com\client\__init__.py", line
454, in __getattr__
raise AttributeError, "'%s' object has no attribute '%s'" % (repr(self),
attr)
AttributeError: '<win32com.gen_py.Surfer 8 Type Library.IShape instance at
0x22544016>' object has no attribute 'Levels'
For some reason Python can't figure out that the IShape is also a
IContourMap.
As I said, I'm new to COM, so I'm at a loss as to what's going on here? Any
help would be appreciated.
Cheers,
Albert
[1] http://www.goldensoftware.com/products/surfer/surfer.shtml
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