@monamimani: WinRT is true Native code, but have too similar things with technology provided in managed .NET - the WinRT library at %SystemRoot%\System32\WinMetadata have the same file format as .NET Assemblies.

For example this is a screenshot

http://imageshack.us/f/137/hellocodeccxcsharpvbnet.png/

http://img137.imageshack.us/img137/3154/hellocodeccxcsharpvbnet.png (direct link)

of examination's Dependency Walker of three binaries of the same code from Charles Petzold - Programming_Windows__Sixth_Edition, but written in three language - C++/CX, C# and VB.NET.

There are no mscoree.dll (.NET core) in C++/CX variant(HelloCode_CCX.exe).