Book Image

Learn WinUI 3 - Second Edition

By : Alvin Ashcraft
5 (1)
Book Image

Learn WinUI 3 - Second Edition

5 (1)
By: Alvin Ashcraft

Overview of this book

WinUI 3 takes a whole new approach to delivering Windows UI components and controls and has the ability to deliver the same features across multiple versions of Windows. Learn WinUI 3 is a comprehensive introduction to WinUI and Windows apps for anyone who is new to WinUI and XAML applications. This updated second edition begins by helping you get to grips with the latest features in WinUI and shows you how XAML is used in UI development. The next set of chapters will help you set up a new Visual Studio environment, develop a new desktop project, incorporate the Model-View-ViewModel (MVVM) pattern in a WinUI project, and develop unit tests for ViewModel commands. Next, you’ll cover the basics of data access from WinUI projects with a step-by-step approach. As you advance, you’ll discover how to leverage the Fluent Design System to design beautiful WinUI applications. You’ll also explore the contents and capabilities of the Windows Community Toolkit and learn how to create cross-platform apps with markup and code from your project using Uno Platform. The concluding chapters will teach you how to build, debug, and deploy apps to the Microsoft Store. By the end of this book, you’ll have learned how to build WinUI applications from scratch and how to modernize existing desktop apps using WinUI 3 and the Windows App SDK.
Table of Contents (20 chapters)
Free Chapter
Part 1:Introduction to WinUI and Windows Applications
Part 2:Extending WinUI and Modernizing Applications
Part 3:Build and Deploy on Windows and Beyond

Using the Fluent XAML Theme Editor

We’ve seen how easy it is to adopt the default color and theme resources from the user’s Windows settings, but what if you or your company wants to create a custom theme for an application? Maybe that theme needs to be shared across a suite of applications. You could create a XAML file with ResourceDictionary in Visual Studio and code all the markup by hand for a new style. Visual Studio’s IntelliSense will help in some regards. However, there is an easier way.

Microsoft has created an open source tool called the Fluent XAML Theme Editor. It is available on the Microsoft Store at, and the source is available on GitHub at This application provides an easy-to-use visual designer to create a ResourceDictionary XAML file that you can drop into your projects.


The Fluent XAML Theme Editor was created to adjust the...