IUnknown Error

[Jarrett Billingsley]

"Heinz" <malagana15 at yahoo.es> wrote in message 
news:frcdcj$1u76$1 at digitalmars.com...
> Hi,
>
> Why do i get this error when compiling a specific dll of mine?
>
>
> C:\Documents and 
> Settings\Administrador\Escritorio\Olave\d3dlib>dmd -O -release
> -ofd3dlib.dll -I..\support -I..\engine d3dlib.d d3ddriver.d gfxdriver.d 
> d3d9d.d
> engine.lib gcstub.obj d3dlib.def
> OPTLINK (R) for Win32  Release 8.00.1
> Copyright (C) Digital Mars 1989-2004  All rights reserved.
> D:\Dev\dmd\bin\..\lib\phobos.lib(com)
> Error 42: Symbol Undefined _IID_IUnknown
> --- errorlevel 1
>
> Thanx

You have to link to UUID.lib when using most COM stuff (DirectX included). 
Just put it on the commandline and it should link it in.