I labelled this screencast as native code for developers who draw a comparison to managed code (i.e. CLR). And, don't worry: more C++ stuff is on the way! Let me know if there's anything in particular that you'd like to see!
Corrector2: Nothing wrong with using WPF for building these kinds of applications. However, it's important to reiterate the purpose of the Windows API Code Pack. It provides a managed library that allows you to quickly target features of Windows Vista and Windows 7 (without having to do all the heavy-lifting yourself via P/Invoke). This falls outside the context of WPF; you could use it for WinForms (for example). HTH!