Rodrigo Ruz has written a whole bunch of great XE3 articles recently. He has a three part series on
Winapi.Functiondiscovery and an article on Record Helpers for Simple Types here:
Winapi.Functiondiscovery Part 1
Winapi.Functiondiscovery Part 2
Winapi.Functiondiscovery Part 3 Record Helpers for ...
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