C++/CX
C++/CX (C++ Component Extensions) is a Microsoft language extension for C++ that enables developers to write Windows Runtime (WinRT) components and applications for Windows 8 and later, including Universal Windows Platform (UWP) apps. It provides syntax and libraries to interact with WinRT APIs, handling tasks like object lifetime management and event handling in a way that integrates with C++ while supporting the WinRT type system. This extension simplifies building high-performance, native Windows applications that can leverage modern Windows features.
Developers should learn C++/CX when creating native Windows applications, especially UWP apps, where direct access to system APIs and high performance are critical, such as in games, graphics-intensive software, or system utilities. It is useful for scenarios requiring interoperability with other WinRT languages (like C# or JavaScript) or when extending existing C++ codebases to work on modern Windows platforms. However, note that Microsoft has shifted focus to C++/WinRT as the recommended alternative for new projects.