Need help converting basic COM program from C++ to D

[jcc7]

== Quote from Chris Burt-Brown (brokenbeta+newsgroups at gmail.com)'s article
> Hi, this my first post and I'm a little lost so please excuse my
> missteps.
>
> I am trying to implement this basic little program:
>
> http://msdn.microsoft.com/en-us/library/ms783787(VS.85).aspx
>
> This is a DirectShow "hello world" and I have been looking around
> for anyone who has actually connected to DirectShow through D, but
> it doesn't appear to have been done. I'm sure that I can cope with a
> more complex example if I can get the basics down.
>
> I've searched around and found various other cries for help relating
> for COM; they have only served to confuse me further :( and the
> section on COM on the Digital Mars website is ... erm,
> disappointingly brief.
>
> I know that this one's a tricky one. Even the slightest nod in a
> direction will be appreciated.
> Thank you very much.
>
> Chris

I don't know anything about DirectShow in particular, but there are a couple
projects that aim to facilitate using COM with D:
 * Juno (non-Tango): http://www.dsource.org/projects/juno
 * DWin (includes port of Juno for Tango): http://www.dsource.org/projects/dwin

I don't know that either Juno or DWin has much beginner-level documentation on
their websites, but you could probably get some tips via their respective forums
(http://www.dsource.org/forums/).