I too am working on this same issue as we speak. It is my goal to automate AutoCAD using Python. I've had success using C# (.net) for Automation but I haven't given up with Python yet. I have done searches here and there on various search engines and haven't come up with any complete answers on passing 3 doubles as an array of Variants. This as you see doesn't happen automatically as it should and Mark has mentioned that idispatch invoke() manually is the way to correctly pass them. I have yet to master invoke and all the params. What I need is a working example of Invoke and its parameters. It seems AutoCAD object model is easy to decifer and the passing and retrieval of a Variant(s) in Python are my only stepping stones to complete a successful automation. I am continually monitoring this mailing list and in my research I will pass on any information that I uncover.
Drkick16
On 12/11/05, [EMAIL PROTECTED] <
[EMAIL PROTECTED]> wrote:
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Today's Topics:
1. question about COM again: variable type? (wccppp)
----------------------------------------------------------------------
Message: 1
Date: Sat, 10 Dec 2005 23:30:46 -1000
From: wccppp <[EMAIL PROTECTED]>
Subject: [python-win32] question about COM again: variable type?
To: python-win32@python.org
Message-ID:
<[EMAIL PROTECTED]>
Content-Type: text/plain; charset="iso-8859-1"
Hello,
I'm having problem implementing a "AddPoint" method in AutoCAD. From the
search I've done, seems the problem is variable type: I supplied a list as
the x,y,z coordinates of a point, why seems what is expected is a Variant
(three-element array of doubles).
The python code I tested with is:
[code]
import win32com.client
acad = win32com.client.Dispatch("AutoCAD.Application")
acad.WindowState = 3
acad.Visible = 1
doc = acad.ActiveDocument
ms = doc.ModelSpace
print str(ms.ObjectName)
try:
ms.AddPoint([0.0, 0.0, 0.0]) # this line gives the problem
finally:
print "\nTest finished."
[/code]
This is the error I got:
Traceback (most recent call last):
File "<string>", line 65, in run_nodebug
File "C:\Programming\Python\Codes\acad_add_point.py", line 11, in ?
ms.AddPoint([0.0, 0.0, 0.0])
File "C:\Python24\lib\site-packages\win32com\gen_py\1EFD8E85-
7F3B-48E6-9341-3C8B2F60136Bx0x1x1.py", line 12688, in AddPoint
ret = self._oleobj_.InvokeTypes(1562, LCID, 1, (9, 0), ((12, 1),),Point
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, None, None,
None, 0, -2147024809), None)
python code for AddPoint method from makepy:
# Result is of type IAcadPoint
def AddPoint(self, Point=defaultNamedNotOptArg):
"""Creates a Point object at a given location"""
ret = self._oleobj_.InvokeTypes(1562, LCID, 1, (9, 0), ((12, 1),),Point)
if ret is not None:
ret = Dispatch(ret, 'AddPoint',
'{35AF3AB5-755E-4AC9-8BAF-31B532870751}', UnicodeToString=0)
return ret
And finally, below is the VBA doucumentation provided with AutoCAD.
Signature
RetVal = object.AddPoint(Point)
Object
ModelSpace Collection, PaperSpace Collection, Block
The object or objects this method applies to.
Point
Variant (three-element array of doubles); input-only
The coordinates of the point to be created.
RetVal
Point object
The newly created Point object.
Example:
Sub Example_AddPoint()
' This example creates a point in model space.
Dim pointObj As AcadPoint
Dim location(0 To 2) As Double
' Define the location of the point
location(0) = 5#: location(1) = 5#: location(2) = 0#
' Create the point
Set pointObj = ThisDrawing.ModelSpace.AddPoint(location)
ZoomAll
End Sub
Sorry for the long post. I've actually spent more than 2 or 3 hours
searching the web for an answer. And I did see lots of discussions related
to this sort of issue: safearray, variant array, etc.. But I didn't see a
definite answer. More than likely it is because I'm a beginner in Python
and could not make sense out of those discussion. Can someone elaborate a
little bit on this?
Thanks a lot for just reading my long message.
--
Regards,
- wcc
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drkick16
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