Skip to content
Agentmart
Submit a tool

windows-gui-visual-testing

Autonomously verify what a Windows desktop GUI app you are developing (WPF, WinForms, Win32) actually RENDERS — without Computer Use.

Skill by mlidbom

IndexedLicense unknown
Write a review

Install

Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/mlidbom-windows-gui-visual-testing

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

Get the weekly diff

The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.

We use your email only for this newsletter. Privacy

About

Autonomously verify what a Windows desktop GUI app you are developing (WPF, WinForms, Win32) actually RENDERS — without Computer Use. Instrument the app itself with a self-capture channel (a trigger file makes the app screenshot its OWN window to a PNG you read), plus a file log, topmost-and-foreground pinning, a single-instance guard, and a tight edit→build→launch→capture→read loop. Use this whenever you are iterating on a Windows desktop app and need to SEE its rendered output — a window's pixels, layout, a visual bug, animation or liveness, or DWM/DirectComposition/Direct3D/GPU-composited content such as live thumbnails, video, or custom drawing — especially when Computer Use is too slow, masks ungranted windows, or gets occluded. Strongly prefer it over Computer Use for any local build-and-look loop on a native Windows GUI you are building; it lets you iterate solo at build speed instead of one screenshot per round-trip. Not for: CI or packaging builds, diagnosing a crash from a stack trace, unit or logic tests, or screenshotting the whole desktop, a web page, or apps you are not developing.

Use cases: testing, devops, writing

Reviews

Write a review

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
No tools found
Secrets
None asked for
Install scripts
None found

Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/windows-gui-visual-testing

What's inside

Skill name
windows-gui-visual-testing
Description
Autonomously verify what a Windows desktop GUI app you are developing (WPF, WinForms, Win32) actually RENDERS — without Computer Use. Instrument the app itself with a self-capture channel (a trigger file makes the app screenshot its OWN window to a PNG you read), plus a file log, topmost-and-foreground pinning, a single-instance guard, and a tight edit→build→launch→capture→read loop. Use this whenever you are iterating on a Windows desktop app and need to SEE its rendered output — a window's pixels, layout, a visual bug, animation or liveness, or DWM/DirectComposition/Direct3D/GPU-composited content such as live thumbnails, video, or custom drawing — especially when Computer Use is too slow, masks ungranted windows, or gets occluded. Strongly prefer it over Computer Use for any local build-and-look loop on a native Windows GUI you are building; it lets you iterate solo at build speed instead of one screenshot per round-trip. Not for: CI or packaging builds, diagnosing a crash from a stack trace, unit or logic tests, or screenshotting the whole desktop, a web page, or apps you are not developing.
License
unknown
Instructions
112 lines in SKILL.md · view on GitHub

Before installing

  • Ships executable scripts

Agent Skills spec issues

  • description: longer than 1024 characters

Files (5)

  • SKILL.md
  • AgentHarness.cs · reference/
  • build-run-capture.ps1 · scripts/
  • capture.ps1 · scripts/
  • frame_diff.ps1 · scripts/

The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub

More from mlidbom/copilot-code-standards-and-instructions

Signals

Stars
0
Forks
0
Open issues
0
Last commit (this folder)
Jul 7, 2026 (3 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
License unknown
Repository
github.com/mlidbom/copilot-code-standards-and-instructions
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
GitHubgithub-graphql

More from mlidbom

Cite this page

windows-gui-visual-testing skill. Agent Mart. https://agentmart.dev/skills/mlidbom-windows-gui-visual-testing (last updated 2026-10-24)