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/winui-app

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by openaiopenai/skills28k stars
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Bootstrap, develop, and design modern WinUI 3 desktop applications with C# and the Windows App SDK using official Microsoft guidance, WinUI Gallery patterns, Windows App SDK samples, and CommunityToolkit components. Use when creating a brand new app, preparing a machine for WinUI, reviewing, refactoring, planning, troubleshooting, environment-checking, or setting up WinUI 3 XAML, controls, navigation, windowing, theming, accessibility, responsiveness, performance, deployment, or related Windows app design and development work.

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Use this Skill: https://skilld.dev/gh/openai/skills/winui-app

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referencessample-source-map.md

≈551 tokens on demand. Your agent reads this file only when SKILL.md points to it.

What This Reference Is For

Use this file when you know the task but need to identify the best canonical source to inspect first.

Task First source Backup source
Check whether a PC can build WinUI apps ../SKILL.md foundation-environment-audit-and-remediation.md
Install missing prerequisites ../SKILL.md foundation-environment-audit-and-remediation.md
Start a new packaged or unpackaged app ../SKILL.md foundation-setup-and-project-selection.md
Choose packaged vs unpackaged Learn Windows App SDK deployment docs WindowsAppSDK-Samples Samples/Unpackaged
Build a shell with navigation WinUI Gallery navigation pages Learn navigation basics
Design a custom title bar Learn title bar guidance WinUI Gallery title bar samples
Add Mica or system backdrops Learn Mica guidance WindowsAppSDK-Samples Samples/Mica
Design a settings page WinUI Gallery control pages CommunityToolkit SettingsControls
Pick a control for a list or collection WinUI Gallery control pages Learn responsive/layout guidance
Improve accessibility Learn accessibility docs WinUI Gallery standard control behavior
Diagnose responsiveness Learn winui-perf.md WPR/WPA guidance in testing-debugging-and-review-checklists.md
Add notifications or activation flows WindowsAppSDK-Samples Learn Windows App SDK lifecycle docs
Decide whether to add CommunityToolkit community-toolkit-controls-and-helpers.md Toolkit component directories

Source Preferences

  • Learn first for requirements and behavioral guidance.
  • WinUI Gallery first for concrete control usage and shell composition.
  • WindowsAppSDK-Samples first for scenario APIs and platform integration.
  • CommunityToolkit only when the task clearly requires Toolkit-specific functionality.

Source: SKILL.md on GitHub

Third-party checks

No alerts17d5 checks · Risk SAFE
  • Gen Agent Trust Hub17d

    This skill provides guidance and scaffolding patterns for building WinUI 3 desktop applications with the Windows App SDK. It includes standard platform configuration and setup mechanisms that leverage official Windows tools. While it executes configuration scripts to configure the local environment, these are implemented via native tools such as WinGet according to official Microsoft workflows.

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    No alerts

  • Snyk17d

    Risk: LOW · No issues

  • Runlayer6mo

    5/20 files flagged

  • ZeroLeaks5mo

    Score: 93/100 · 2 sections analyzed

Provenance

Signed by skilld at c207989. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub 2 months ago.

Activeupdated 7 months ago

Topics

  • winui
  • csharp
  • windows-app-sdk
  • desktop
  • xaml
  • visual-studio
  • winget
  • theming
  • accessibility
  • responsive-design

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README badge for openai/skills/winui-app

What it does

Bootstraps and develops WinUI 3 desktop applications in C# using the Windows App SDK, with guidance for environment setup, project scaffolding, XAML patterns, controls, navigation, theming, and deployment. Use this skill when creating a new app, preparing a machine for WinUI development, or troubleshooting XAML compilation and startup issues.

Generated from the current SKILL.md.

Frequently asked

Does this skill work with C++ or only C#?
The skill is built around C# and the Windows App SDK. C++ or C++/WinRT is mentioned only when the difference is material to the task.
Can I use this skill to set up an unpackaged app instead of a packaged one?
Yes. The skill supports both packaged and unpackaged app models. You can pass the `--unpackaged` flag to `dotnet new winui`, or the skill will default to packaged for Store-like workflows and unpackaged for CLI build-and-run loops.
What if my machine isn't ready for WinUI development yet?
The skill includes a bundled WinGet configuration (`config.yaml`) that installs Visual Studio Community 2026, enables Developer Mode, and adds the required Windows App SDK C# components. For diagnostics-only audits without machine changes, the skill provides manual verification guidance instead.
Does this skill handle third-party component libraries or only native WinUI controls?
The skill favors native WinUI controls and Fluent styling first. It uses the CommunityToolkit only when built-in controls do not cover the need cleanly, and avoids inventing custom component libraries unless you explicitly request them.

Generated from the current SKILL.md. These answers refresh after source changes.