Hi,

I am using ctypes.com to access a COM object. The
object has a method whose return type is VARIANT. The
method is described in the readtlb-generated code as:

STDMETHOD(HRESULT, "_get_Get", VARIANT,
POINTER(VARIANT)),

I am using code like the following to invoke the
method:


from ctypes.com.automation import VARIANT
from ctypes import byref

input_variant = VARIANT('last')
output_variant = VARIANT()

obj._get_Get(input_variant, byref(output_variant))


Then I try to get the value out through
output_variant.value.

The above code works fine when the method returns a
simple variant containing a single string.

(1) The code does *not* work when the method returns a
variant that is an array of variants. In that case, I
get this error:

> >> output_variant.value
Traceback (most recent call last):
  File "<stdin> ", line 1, in ?
  File
"c:\Python24\lib\site-packages\ctypes\com\automation.py",
line 495, in _get_value
    data = TYPECODE[self.vt & ~VT_ARRAY]()
KeyError: 12

(2) The code also does *not* work when the method
returns a two dimensional array.

It fails with this error:

> >> output_variant.value
Traceback (most recent call last):
  File "<stdin> ", line 1, in ?
  File
"c:\Python24\lib\site-packages\ctypes\com\automation.py",
line 490, in _get_value
    assert dim == 1
AssertionError

------

How can I get the value out of a VARIANT when it
contains an array of variants or a 2-dimensional
array. 

Thanks!

-Sumeet.


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