Quirks of 'alias foo this'

[Andrej Mitrovic]

I have a similar problem. :)

I'd like to catch a call to a COM object to check if it was properly
initialized first.

Here's one way to do it with regular classes:
http://codepad.org/lHsQf4UG

You can read about whitehole here:
http://www.digitalmars.com/d/2.0/phobos/std_typecons.html#WhiteHole

I think the above example could be used with COM objects but I haven't
tried yet.