Windows Runtime Library

What does Windows Runtime Library mean?

Windows Runtime Library (WRL) is a C++ template library that simplifies the development of Windows Runtime components and applications. It provides a consistent, object-oriented interface to the Windows Runtime APIs, making it easier to create efficient and maintainable code. WRL eliminates the need for Manual memory management, COM interop, and error handling, allowing developers to Focus on the core functionality of their applications.

WRL includes a Set of standard templates and classes that provide essential functionality for Windows Runtime development. These include interfaces, delegates, async patterns, event handling, and property system support. By utilizing WRL, developers can create code that is flexible, extensible, and efficient, reducing development time and enhancing code quality.

Applications

WRL is widely used in the development of Windows Runtime applications, including those written in C++. It is particularly valuable for creating modern, high-performance applications that leverage the latest features of the Windows Platform.

WRL allows developers to:

• Create components that can be used in both native and managed code
• Develop asynchronous code using the Task-based Asynchronous Pattern (TAP)
• Handle events efficiently using the EventToken template
• Access properties using the PropertySet class
• Work with C++/WinRT, a modern C++ language projection for the Windows Runtime

History

WRL was first introduced with the release of Windows 8. It has since been updated and enhanced in subsequent versions of Windows. The library has evolved to support new features and APIs, while maintaining backward compatibility with earlier versions.

The development of WRL was driven by the need for a simplified and efficient C++ interface to the Windows Runtime. Prior to WRL, developers had to rely on the low-level Windows Runtime APIs, which were complex and error-prone. WRL provides a higher-level abstraction, making it easier for developers to create robust and maintainable Windows Runtime applications.