janwilmans 

Windows Template Library (WTL) is a C++ library for developing Windows applications and UI components. It extends ATL (Active Template Library) and provides a set of classes for controls, dialogs, frame windows, GDI objects, and more.

CopperSpice 1.7.0 (x64) is of a set of libraries to develop cross platform applications in C++.

WTLPropertyGrid is a ProperyGrid build on top of WTL see https://www.viksoe.dk/code/propertygrid.htm for original code see https://github.com/janwilmans/wtl-and-friends for the updated code, also report issues here.