我comtypes
正在 Python 2.6.5 和 ArcGIS 10 SP1 下试验 ArcObjects。我正在使用纯 Python 方法来包装此答案comtypes.CoCreateInstance
中描述的 ArcObjects OLB,但在该方法中出现错误。
这是我正在运行的代码:
def WrapModules():
#force wrapping of all ArcObjects libraries (OLBs)
import os
import comtypes.client
# change com_dir to whatever it is for you
com_dir = r'C:\Program Files\ArcGIS\Desktop10.0\com'
coms = [os.path.join(com_dir, x) for x in os.listdir(com_dir) if os.path.splitext(x)[1].upper() == '.OLB']
map(comtypes.client.GetModule, coms)
def GetApp():
"""Get a hook into the current session of ArcMap"""
from comtypes.gen import esriFramework
pAppROT = NewObj(esriFramework.AppROT, esriFramework.IAppROT)
if pAppROT is not None:
iCount = pAppROT.Count
if iCount == 0:
print 'No ArcGIS application currently running. Terminating ...'
return None
for i in range(iCount):
pApp = pAppROT.Item(i) #returns IApplication on AppRef
if pApp.Name == 'ArcMap':
print "ArcMap found"
return pApp
print 'No ArcMap session is running at this time.'
print "No AppROT found"
return None
def NewObj(MyClass, MyInterface):
"""Creates a new comtypes POINTER object where\n\
MyClass is the class to be instantiated,\n\
MyInterface is the interface to be assigned"""
from comtypes.client import CreateObject
import traceback
try:
ptr = CreateObject(MyClass, interface=MyInterface)
return ptr
except:
print traceback.format_exc()
return None
if __name__ == "__main__":
WrapModules()
pApp = GetApp()
if pApp is not None:
print "HWND: %d" % pApp.hWnd
else:
print "No ArcGIS application found!"
这是脚本的输出:
回溯(最近一次通话最后): NewObj 中的文件“C:\temp\ComHelpers.py”,第 35 行 ptr = CreateObject(MyClass, interface=MyInterface) 文件“C:\Python26\ArcGIS10.0\lib\site-packages\comtypes\client\__init__.py”,第 235 行,在 CreateObject obj = comtypes.CoCreateInstance(clsid, clsctx=clsctx, interface=interface) CoCreateInstance 中的文件“C:\Python26\ArcGIS10.0\lib\site-packages\comtypes\__init__.py”,第 1145 行 _ole32.CoCreateInstance(byref(clsid),punkouter,clsctx,byref(iid),byref(p)) GetResult 中的文件“_ctypes/callproc.c”,第 925 行 WindowsError:[错误 -2147221231] ClassFactory 无法提供请求的类 未找到 AppROT 未找到 ArcGIS 应用程序!
感谢您提供的任何见解!