Mark-
The example application I am working from does the following (but never actually does a CreateObject with the dll):
' set up the input
Dim pConv As New SRS_CONLib.Point2D
pConv.x = CDbl(m_sX)
pConv.y = CDbl(m_sY)
pConv.Projection = m_inProj
' check to see if the range is valid (or the user wants to override)
If checkRange(pConv.x, pConv.y, m_inProj) = False Then Exit Sub
The reference the the dll is as follows:
Reference=*\G{A816BA3B-2465-11D5-9122-000629432AA8}#1.0#0#C:\Program Files\EGIS Utilities\ArcMap\17_srs_con.dll#srs_con 1.0 Type Library
Is what I need in either of these places? Or can I get to it from either of these two places.
As you can tell, I am baffled by COM....
Thanks again,
Eric
PS I forwarded your message to the developer, but haven't heard back yet.
Eric B. Powell
E&GIS
BSRI
(803)952-7783
When a true genius appears in this world you may know him by this sign, that the dunces are all in confederacy against him. (Swift)
| "Mark Hammond"
<[EMAIL PROTECTED]>
05/09/2005 06:38 PM |
|
"SRS_CONLib.Point2D" is not the "ProgID" of the object - it is the name of
the typelib and interface in that typelib.
If your object can be used with Dispatch, it should be possible to create
the object in VB using "CreateObject" - CreateObject wants the ProgID too -
ie, it will fail with "SRS_CONLib.Point2D". Whatever you can pass to
CreateObject can be passed to Python's dispatch.
Ask the developer what the "ProgID" of the object is.
Cheers,
Mark
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED]
Sent: Tuesday, 10 May 2005 2:55 AM
To: python-win32 Mailinglist
Subject: [python-win32] (no subject)
Hello again, all-
I am still trying to understand Windows COM from Python. This time, I am
trying to access a custom COM object an in-house developer has developed in
C++. The class is stored in a dll registered with my system, and can be
called from VB as follows:
>From a working VB project:
' set up the input
Dim pConv As New SRS_CONLib.Point2D
However, when I try to call the clas via win32com, I get error messages.
In Python:
srs = win32com.client.Dispatch(r'SRS_CONLib.Point2D')
The error:
Traceback (most recent call last):
File "<pyshell#13>", line 1, in -toplevel-
srs = win32com.client.Dispatch(r'SRS_CONLib.Point2D')
File "C:\PYTHON23\lib\site-packages\win32com\client\__init__.py", line 95,
in Dispatch
dispatch, userName =
dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)
File "C:\PYTHON23\lib\site-packages\win32com\client\dynamic.py", line 84,
in _GetGoodDispatchAndUserName
return (_GetGoodDispatch(IDispatch, clsctx), userName)
File "C:\PYTHON23\lib\site-packages\win32com\client\dynamic.py", line 72,
in _GetGoodDispatch
IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx,
pythoncom.IID_IDispatch)
com_error: (-2147221005, 'Invalid class string', None, None)
The developer tells me the IDispatch interface is enabled, and the
SRSCON_Lib.Point2D should be in the registry.
Thanks in advance for any assistance....
Eric
Eric B. Powell
E&GIS
BSRI
(803)952-7783
When a true genius appears in this world you may know him by this sign, that
the dunces are all in confederacy against him. (Swift)
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