[python-win32] Python, COM, VARIANT, VT_BYREF, Joy!

[Vernon Cole]

If  I Recall Correctly, the ActiveXCtrl class in wxPython does not use the
pywin32 tools, but a different package. That, along with no plans to migrate
to Python 3, is why my own work is migrating away from wxPython.  Too bad,
too. I rather liked wxPython.
--
Vernon Cole

On Mon, May 24, 2010 at 7:25 AM, Mark Hammond <skippy.hammond at gmail.com>wrote:

> On 22/05/2010 12:15 AM, George Doster wrote:
>
>> Hello All,
>>
>> I'm trying to write a Python program that uses a provided ActiveX
>> component. I have verified the component works ok with Visual Basic.
>>
>> I have used makepy to build the import module for my ActiveX component.
>>
>> I can successfully load the component via the ActiveXCtrl class found in
>> wxPython.
>>
>> My issue is how to call one of the methods of the ActiveX component. The
>> method requires a pointer to a variant.
>>
>> Excerpt from the makepy created module:
>>
>> def OpenUSB(self, lWarning=
>> defaultNamedNotOptArg):
>>         return self._oleobj_.InvokeTypes(1, LCID, 1, (3, 0), ((16387,
>> 0),),lWarning)
>>
>> As you can see, the first arg is a VT_BYREF | VT_I4.
>>
>
> You should find that you don't need to supply the argument at all -
> win32com should initialize and provide the param for you and return the
> final result in the return value - assuming the param is an 'out' param.
>
> Cheers,
>
> Mark
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