[python-win32] Problem with TLB file and COM

[Reedick, Andrew]

I'm having trouble with a COM object for which none of its methods are
available at runtime.  The COM class is defined in a tlb file.  I used
"makepy -i", added the gencache lines to the program, and can see the
methods in the generated file.  However, when I try to call any method,
it blows up with a DISPATCH_METHOD flag error.

The equivalent code works just fine in Perl.

Anyone have any idea why a COM object defined in a tlb file would be so
problematic in Python?


=== program ===
import win32com.client

from win32com.client import gencache
gencache.EnsureModule('{A5B37030-06D9-11D2-A58A-006097B17A75}', 0, 4, 0)

gui = win32com.client.Dispatch("ReqPro40.GUIApp")
print gui
print
print dir(gui)

print
print 'showword =', gui.ShowWord()



== output ==
<COMObject ReqPro40.GUIApp>

['_ApplyTypes_', '_FlagAsMethod', '_LazyAddAttr_', '_NewEnum',
'_Release_', '__AttrToID__', '__LazyMap__', '__call__', '__cmp__',
'__doc__', '__getattr__', '__getitem__', '__init__', '__int__',
'__len__', '__module__', '__nonzero__', '__repr__', '__setattr__',
'__setitem__', '__str__', '_builtMethods_', '_enum_',
'_find_dispatch_type_', '_get_good_object_', '_get_good_single_object_',
'_lazydata_', '_make_method_', '_mapCachedItems_', '_oleobj_',
'_olerepr_', '_print_details_', '_proc_', '_unicode_to_string_',
'_username_', '_wrap_dispatch_']

showword =
Traceback (most recent call last):
  File "D:\mydata\dev\reqpro\renumber\c.py", line 13, in <module>
    print 'showword =', gui.ShowWord()
  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py", line
491, in __getattr__
    raise pythoncom.com_error, details
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0,
'Smalltalk', 'Incorrect dispatch invocation flags: DISPATCH_METHOD flag
not set for method ShowWord.', None, 0, 0), None)


=== snippets of gen file ====

CLSID = IID('{A5B37030-06D9-11D2-A58A-006097B17A75}')
...
from win32com.client import DispatchBaseClass
class IReqProGUIApp(DispatchBaseClass):
	"""RequisitePro GUI Application Dispatch Interface"""
	CLSID = IID('{52795522-11D4-11D2-A59B-006097B17A75}')
	coclass_clsid = None

	...

	def ShowWord(self):
		"""Brint the Word Workplace to the front."""
		return self._oleobj_.InvokeTypes(209, LCID, 1, (11, 0),
(),)



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