Fix duplicate screen reader announcements in Color page copy buttons

[Copilot]

Screen readers announce "Brush name copied to clipboard, Copied to clipboard" when copying color brush names - the message is duplicated because both CopyButton's internal handler and ColorTile's custom handler trigger accessibility announcements.

Changes

• CopyButton: Add CopiedMessage dependency property to allow customization of the announcement (defaults to "Copied to clipboard")
• ColorTile: Set CopiedMessage="Brush name copied to clipboard" on the button, remove duplicate UIHelper.AnnounceActionForAccessibility call

Example

<local:CopyButton
    Click="CopyBrushNameButton_Click"
    CopiedMessage="Brush name copied to clipboard"
    Content="&#xE8C8;" />

private void CopyBrushNameButton_Click(object sender, RoutedEventArgs e)
{
    DataPackage package = new DataPackage();
    package.SetText(ColorBrushName);
    Clipboard.SetContent(package);
    // Announcement now handled by CopyButton using CopiedMessage property
}

Applies to all color sections (Text, Signal, Fill, Background, Stroke, HighContrast).

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• 0t3vsblobprodcus362.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/EB23B7D1B15B85081672081E55C17E18/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 1p7vsblobprodcus324.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/E25CD4A82AF7DCCAC78C9E3EDD9CC1BB/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 51yvsblobprodcus36.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/A5067618043C36E803E5020505C5E40F/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 6s7vsblobprodcus313.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/7F0AD5B89EC078FE77CFD6BDA2F52E08/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• 96bvsblobprodcus338.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• e7bvsblobprodcus348.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet build WinUIGallery/WinUIGallery.csproj --configuration Release (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore WinUIGallery/WinUIGallery.csproj (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/WinUIGallery.sln --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• gbsvsblobprodcus365.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/7C8EA345233C92F4CB2BB9658BB2AA46/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ibzvsblobprodcus369.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• jd4vsblobprodcus366.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/DE17E2442CB5BCCE3B8E9B4256A655B4/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• k4kvsblobprodcus344.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/AFED770A6C82C3D0C8515A8A32ECB221/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force sharp/working/emptyFakeDotnetRoot csharp/working/emptyFakeDotnetRoot (dns block)
• kmuvsblobprodcus389.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/0A8D2B0114395BB81780675AAD5BD541/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ofvvsblobprodcus315.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/C1A6874189F3A3E4F1A43CCA7F065BAD/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• pkvvsblobprodcus321.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)
• uy6vsblobprodcus34.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/9385D6F79C8C3B1189EF0A92FFB71E10/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• vb4vsblobprodcus33.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/2BA3A66AC79FC725BB64C9C1AA39E377/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• vwvvsblobprodcus334.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/780211A2D4C6297318C9E18BBEC72052/missingpackages_workingdir --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/missingpackages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal --configfile /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/nugetconfig/nuget.config --force (dns block)
• ytvvsblobprodcus310.vsblob.vsassets.io
  • Triggering command: /usr/bin/dotnet dotnet restore --no-dependencies /home/REDACTED/work/WinUI-Gallery/WinUI-Gallery/tests/WinUIGallery.UITests/WinUIGallery.UITests.csproj --packages /home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/packages /p:DisableImplicitNuGetFallbackFolder=true --verbosity normal /p:TargetFrameworkRootPath=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot /p:NetCoreTargetingPackRoot=/home/REDACTED/work/WinUI-Gallery/.codeql-scratch/dbs/csharp/working/emptyFakeDotnetRoot (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>On invoking 'Copy brush name' button, Screen reader is announcing the 'Copied to clipboard' success message twice.</issue_title>
<issue_description>### Which version of the app?

WinUI 3 Gallery

Description

Environment Details:
OS Version: 24H2 (OS Build 26100.4315)
App: WinUI 3 Gallery
App Version: 2.6.0.0 (SDK 1.7)
AT: Screen reader

Pre-Requisite:
Turn on Narrator with shortcut key "win+ctrl+Enter" key.

Repro Steps:
Launch the WinUI 3 Gallery app.
Navigate to search box using tab key.
Type 'Color' in search box and hit enter.
Navigate to 'Color' card and activate it.
Navigate to 'Text' list item and select it.
Navigate to 'Copy brush name' button and invoke it.
Now listen to the screen reader announcement
Actual Result:
On invoking 'Copy brush name' button, Screen reader is announcing the 'Copied to clipboard' success message twice. It is announcing as "Brush name copied to clipboard, Copied to clipboard"

Note: Issue is observed in entire component

Expected Result:
On invoking 'Copy brush name' button, Screen reader should announce the success message only once. It should announce like 'Brush name copied to clipboard'.

User Impact:
Users with visual impairments who rely on screen reader will face difficulties, if copied success message information announcing twice

“Have feedback on bugs logged, please tag bug as “A11yRCA” and add your feedback in the comment section.”

Screenshots

No response

Windows version

Windows 11 24H2 (26100)

Additional context

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes On invoking 'Copy brush name' button, Screen reader is announcing the 'Copied to clipboard' success message twice. #2083

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