$ show microsoft/WindowsAppSDK-Samples
The microsoft/WindowsAppSDK-Samples repository is a comprehensive suite of reference applications demonstrating the Windows App SDK (WinAppSDK) ecosystem. It is not a single monolithic application but a collection of independent projects categorized by feature domain, including App Lifecycle, Composition, Input, Notifications, AI/ML, and Islands. The codebase serves as the primary learning resource for developers building Windows desktop applications using WinUI 3, WPF, WinForms, and native C++. It explicitly covers both packaged (MSIX) and unpackaged deployment models, with distinct initialization logic for each (e.g., Bootstrap initialization for unpackaged apps). The repository also includes Visual Studio project templates to scaffold new applications. Architecturally, the repository is organized as a gallery of samples where each project is self-contained but shares common utilities in the SamplesCommon directory. The code demonstrates high craftsmanship in complex areas like Composition animations, Direct2D interop, and ONNX Runtime integration. However, the codebase exhibits significant duplication of boilerplate logic (e.g., MainWindow initialization, Navigation patterns) across dozens of sample projects. Additionally, many C++ samples rely on legacy NuGet management (packages.config) rather than modern PackageReference, indicating a technical debt in the C++ tooling alignment. The repository is actively maintained with recent commits and CI pipelines for various sample categories. It relies heavily on specific Windows App SDK versions and preview APIs (e.g., ElementCompositionPreview), which introduces a risk of drift as the SDK evolves. The presence of both C++/WinRT and raw Win32/C++ samples highlights a transition period in the Windows development stack, requiring developers to navigate mixed paradigms.
The LLM identified 4 files worth highlighting for reuse:
A reusable helper library for programmatically constructing Composition ExpressionAnimations. It abstracts the complexity of building expression nodes (ScalarNode, Matrix4x4Node) and chaining them into complex animations. This component demonstrates non-obvious skill in visual programming and is safely reusable for any project requiring dynamic animation logic without XAML.
Central logic for managing ONNX Runtime sessions, execution provider selection (CPU, GPU, NPU), and model compilation. It encapsulates the complexity of ML model lifecycle management, making it a reusable pattern for integrating Windows ML capabilities into any application type (WinForms, WPF, WinUI).
Demonstrates the correct initialization pattern for unpackaged C# applications using Bootstrap.TryInitialize. This is a critical, often overlooked pattern for non-MSIX apps that need to access WinAppSDK APIs. It is a self-contained, reusable entry point pattern for developers building unpackaged desktop tools.
A reusable XAML control that wraps Composition DropShadow logic. It abstracts the low-level Composition API calls into a standard XAML control, demonstrating a pattern for exposing Composition effects to XAML developers without requiring them to manage Visual trees manually.