Access to Windows 10 Store API from RAD Studio

Hello,

is there any supported way of accessing the new Windows 10 Store API from RAD Studio 10.1 Berlin Update 2?

Specifically, I'd like to use the API for In-App Purchases and licensing through the Windows 10 Store. The API calls I need are in the Windows::Services::Store namespace (https://msdn.microsoft.com/library/windows/apps/windows.services.store.storecontext.aspx).

I have tried including the windows.services.store.h include file from the Windows 10 SDK, but C++Builder chokes on it, both using bcc32 and clang compilers.

My app is a 32-bit desktop VCL app written C++, and I convert it to appx using the Microsoft App Converter to list it in the store.