[WinAPI] Problem with an interface...

[Jarrett Billingsley]

"Sascha Katzner" <sorry.no at spam.invalid> wrote in message 
news:fi4el3$1peg$1 at digitalmars.com...

> It seems this explains exactly why the next function is called (because D 
> expects an additional first entry which Windows doesn't deliver), when 
> using a normal D interface instead of something derived from IUnknown. 
> What it doesn't explain is, why IUnknown interfaces doesn't have this 
> problem?!?

IUnknown is "magic", like Object.  IUnknown has special significance to the 
compiler; it knows that anything that derives from it is a COM interface.