Re: ctypes-users Digest, Vol 49, Issue 2
David Shi <[email protected]>
| Newsgroups | gmane.comp.python.ctypes |
|---|---|
| Message-ID | <[email protected]> |
http://arcscripts.esri.com/scripts.asp?eLang=&eProd=&perPage=10&eQuery=areal&Submit2=Search
I have been trying to call and execute the ArcView 9.x one.
from ctypes import *
import ctypes
import arcgisscripting
gp = arcgisscripting.create()
# Load required toolboxes...
gp.AddToolbox("C:/Program Files/ArcGIS/ArcToolBox/Toolboxes/Data Management Tools.tbx")
mylib = CDLL("d:\\SHImaps\AS13910\ArealInterpolator.dll")
from ctypes.wintypes import HWND, LPCSTR, UINT
prototype = WINFUNCTYPE(c_int, HWND, LPCSTR, LPCSTR, UINT)
addr = mylib._handle
myfunc = prototype(addr)
# Make a layer from the feature class
gp.MakeFeatureLayer("d:/shimaps/lc_2k.shp","lyr1")
# Make a layer from the feature class
gp.MakeFeatureLayer("d:/shimaps/lc_2k.shp","lyr2")
# Select all cities which overlap the chihuahua polygon
gp.SelectLayerByLocation("lyr2", "intersect", "lyr1")
hllapiparams = ("lyr1"), ("area"), ("lyr2"), ("lyr2")
hllapiproto = ctypes.WINFUNCTYPE(ctypes.c_ulong, ctypes.c_char_p, ctypes.c_char_p, ctypes.c_ulong)
hllapi = hllapiproto((1, mylib), hllapiparams)
##hllapi = hllapiproto(("1", mylib), hllapiparams)
##hllapi = hllapiproto((1, mylib), hllapiparams)
The error message says number of parameters not correct.
I wonder how to set up prototypes and parameters to call and execute vb .dll.
Regards.
David
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From: "[email protected]" <[email protected]>
To: [email protected]
Sent: Tue, 8 June, 2010 13:05:48
Subject: ctypes-users Digest, Vol 49, Issue 2
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Today's Topics:
1. Calling and executing ArcGIS extension .dll in Python (David Shi)
2. Re: Calling and executing ArcGIS extension .dll in Python
[SEC=PERSONAL] (Andrew MacIntyre)
----------------------------------------------------------------------
Message: 1
Date: Mon, 7 Jun 2010 12:54:10 +0000 (GMT)
From: David Shi <[email protected]>
Subject: [ctypes-users] Calling and executing ArcGIS extension .dll in
Python
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset="utf-8"
Has anyone come across working examples of calling extension dll in a Python script?
I should be grateful if you could send me working examples and instructions to make it work.
Regards.
David
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Message: 2
Date: Tue, 8 Jun 2010 14:59:08 +1000
From: "Andrew MacIntyre" <[email protected]>
Subject: Re: [ctypes-users] Calling and executing ArcGIS extension
.dll in Python [SEC=PERSONAL]
To: [email protected]
Message-ID:
<[email protected]>
Content-Type: text/plain; charset="utf-8"
It would help if you can give a bit more detail about what exactly you?re trying to do, and what components you?re trying to use.
If you mean using COM interfaces particular to various ArcGIS extensions, particularly those that require a licence, you should read the section in ?ArcGIS Desktop Help for VBA developers? for the ExtensionManager co-class. You will also need build the comtypes interface files for all the ArcGIS dlls and type libraries required.
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From: David Shi [mailto:[email protected]]
Sent: Monday, 7 June 2010 10:54 PM
To: [email protected]
Subject: [ctypes-users] Calling and executing ArcGIS extension .dll in Python
Has anyone come across working examples of calling extension dll in a Python script?
I should be grateful if you could send me working examples and instructions to make it work.
Regards.
David
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