[python-win32] issues with win32com constants and static/dynamic dispatch

[Simon Dahlbacka]

my best guess is that you should be using .ProductName (capital p) as static
dispatch is case sensitive..

/S

On 7/4/07, Jason Ferrara <jason.ferrara at jacquette.com> wrote:
>
> I'm trying to use a COM library from python.
>
> If I use dynamic dispatch, the com objects all behave correctly, but the
> constants defined in the COM library don't show up.
>
> If I use static dispatch, the constants show up, but COM objects returned
> by calls into the COM library seem broken.
>
> As example, starting with dynamic dispatch
>
>   Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
> (Intel)] on win32
>   Type "help", "copyright", "credits" or "license" for more information.
>   >>> import win32com.client
>   >>> mi=win32com.client.Dispatch("MIDLIBCom.MIDLib")
>   >>> cams=mi.OpenCameras("C:\Program Files\Micron Imaging\sensor_data")
>   >>> c=cams[0]
>   >>> print c
>   <COMObject OpenCameras>
>   >>> print c.productName
>   Micron Imaging DEMO2
>
> So far everything is fine, but now...
>
>   >>> print win32com.client.constants.MI_BAYER_8
>   Traceback (most recent call last):
>     File "<stdin>", line 1, in <module>
>     File "C:\Python25\Lib\site-packages\win32com\client\__init__.py", line
> 168, in
>    __getattr__
>       raise AttributeError, a
>   AttributeError: MI_BAYER_8
>
> This is no good. So now I try static dispatch
>
>   Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
> (Intel)] on win32
>   Type "help", "copyright", "credits" or "license" for more information.
>   >>> import win32com.client
>   >>> mi=win32com.client.gencache.EnsureDispatch("MIDLIBCom.MIDLib")
>   >>> print win32com.client.constants.MI_BAYER_8
>   1
>
> Things are looking better, but now...
>
>   >>> cams=mi.OpenCameras("C:\Program Files\Micron Imaging\sensor_data")
>   >>> c=cams[0]
>   >>> print c
>   <PyIUnknown at 0xac640c with obj at 0xf0d808>
>   >>> print c.productName
>   Traceback (most recent call last):
>     File "<stdin>", line 1, in <module>
>   AttributeError: 'PyIUnknown' object has no attribute 'productName'
>
>
> So whats going on here? What am I doing wrong?
>
> Thanks
>
> - J
>
>
>
>
>
>
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