Missing DecklinkInterface.h ?

Hello, Im a litle new to C
I downloaded last Decklink SDK 10.3.1, I can run DEcklinkCapture.exe located at Blackmagic DeckLink SDK 10.3.1\Win\DirectShow\Samples\bin
I opened the DecklinkCapture project (Blackmagic DeckLink SDK 10.3.1\Win\DirectShow\Samples\DecklinkCapture) in Visual Studio 2008 but when I try to compile I get an error that says:
Error 1 fatal error C1083: Cannot open include file: 'DecklinkInterface.h': No such file or directory ..

I do not find the file 'DecklinkInterface.h' in any directory
but it is refenced in stdafx.h
..
#include <strsafe.h>
#include <DecklinkInterface.h> // Decklink
#include <Dshowasf.h> // Windows Media Encoder
..

What I miss ?
How to get the app compiled in VS2008 ?

Solved, Instead of opening the project alone, I opened the samples solution in VS2008 and now compiles ok
Now remains Decklink histogram, playback and other 2 apps to resolve as said cannot open include file "dxtrans.h"

dxtrans.h is from DirectX SDK. It is unlikely to have anything absolutely needed, just some unrelated internal reference. Chances are high that you can simply comment some stuff out (perhaps in a few iterations), or simply install DirectX SDK to have the header available.