Re: Really no programmatically filter control in DirectShow??
From: Robin (Robbson_at_gmx.de)
Date: 01/29/05
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Date: Sat, 29 Jan 2005 13:46:07 +0100
Thanks for fast answer!
>> So I can only control these filters, where .h header files exist from the
>> developers
>> (like in a SDK), where you can get all the custom interfaces?
>
> However much better COM is than what went before, it definitely has its
> limitations, and this lack of a real discovery mechanism is one of them.
Hmm... And I thought COM would be a interface with total freedom
in this area... Microsoft has promised far too much in the SDK docs.
> DirectShow does ensure that the property page talks to the filter via a
> COM
> interface, but if that is not documented, there is not much you can do.
> For
> third-party filters, you can only ask the developers -- but I think most
> of
> these filter developers would be happy to provide you with the
> documentation.
Really? I could try it... But do I need only the name of an hidden interface
to get all the property settings I want?
And there are developers, who distribute only the directshow-filters
for using in other applications, but there I'm also missing something
like a SDK with header-files or property access documentation.
> The idea of a generalised property interface is something that has been
> wanting for a long time, but somehow has never made it into the release.
>
;-/
Robin
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