Adds BgcodeThumbnailProvider and BgcodePreviewHandler (#38667)

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [X] **Closes:** #30352
- [X] **Communication:** I've discussed this with core contributors
already. If work hasn't been agreed, this work might be rejected
- [X] **Tests:** Added/updated and all pass
- [X] **Localization:** All end user facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [X] **New binaries:** Added on the required places
- [X] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [X] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments


![image](https://github.com/user-attachments/assets/62c0cbbb-fbca-4bb3-82fe-696ba40da83d)


![image](https://github.com/user-attachments/assets/3f2f1346-91fb-4f49-85b9-8cd6e19e68e9)

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

- Close PowerToys if installed in your machine
- Full build the solution: PowerToys.sln
- Start PowerToys from PowerToys\x64\Debug\PowerToys.exe or
PowerToys\x64\Release\PowerToys.exe
- Toggle the "Binary G-code thumbnail previewer" setting to enable
- Open HelperFiles folder on the tests and check if the icon changes to
an image
- Check explorer preview to see if image is also shown there

---------

Co-authored-by: leileizhang <leilzh@microsoft.com>

.github/actions/spell-check/allow/code.txt

@@ -29,11 +29,14 @@ RUS
 AYUV
 bak
 Bcl
+bgcode
+Deflatealgorithm
 exa
 exabyte
 Gbits
 Gbps
 gcode
+Heatshrink
 Mbits
 MBs
 mkv

.github/actions/spell-check/excludes.txt

@@ -18,6 +18,7 @@
 /TestFiles/
 [^/]\.cur$
 [^/]\.gcode$
+[^/]\.bgcode$
 [^/]\.rgs$
 \.a$
 \.ai$

.pipelines/ESRPSigning_core.json

@@ -66,6 +66,12 @@
             "PowerToys.GcodeThumbnailProvider.dll",
             "PowerToys.GcodeThumbnailProvider.exe",
             "PowerToys.GcodeThumbnailProviderCpp.dll",
+            "PowerToys.BgcodePreviewHandler.dll",
+            "PowerToys.BgcodePreviewHandler.exe",
+            "PowerToys.BgcodePreviewHandlerCpp.dll",
+            "PowerToys.BgcodeThumbnailProvider.dll",
+            "PowerToys.BgcodeThumbnailProvider.exe",
+            "PowerToys.BgcodeThumbnailProviderCpp.dll",
             "PowerToys.ManagedTelemetry.dll",
             "PowerToys.MarkdownPreviewHandler.dll",
             "PowerToys.MarkdownPreviewHandler.exe",

DATA_AND_PRIVACY.md

@@ -383,6 +383,18 @@ _If you want to find diagnostic data events in the source code, these two links
     <td>Microsoft.PowerToys.GcodeFilePreviewError</td>
     <td>Triggered when there is an error previewing a G-code file.</td>
   </tr>
+  <tr>
+    <td>Microsoft.PowerToys.BgcodeFileHandlerLoaded</td>
+    <td>Triggered when a Binary G-code file handler is loaded.</td>
+  </tr>
+  <tr>
+    <td>Microsoft.PowerToys.BgcodeFilePreviewed</td>
+    <td>Occurs when a Binary G-code file is previewed in File Explorer.</td>
+  </tr>
+  <tr>
+    <td>Microsoft.PowerToys.BgcodeFilePreviewError</td>
+    <td>Triggered when there is an error previewing a Binary G-code file.</td>
+  </tr>
   <tr>
     <td>Microsoft.PowerToys.MarkdownFileHandlerLoaded</td>
     <td>Occurs when a Markdown file handler is loaded.</td>

PowerToys.sln

@@ -714,6 +714,18 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "CmdPalKeyboardService", "sr
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "PowerRename.FuzzingTest", "src\modules\powerrename\PowerRename.FuzzingTest\PowerRename.FuzzingTest.vcxproj", "{2694E2FB-DCD5-4BFF-A418-B6C3C7CE3B8E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BgcodePreviewHandler", "src\modules\previewpane\BgcodePreviewHandler\BgcodePreviewHandler.csproj", "{9E0CBC06-F29A-4810-B93C-97D53863B95E}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BgcodePreviewHandlerCpp", "src\modules\previewpane\BgcodePreviewHandlerCpp\BgcodePreviewHandlerCpp.vcxproj", "{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "BgcodeThumbnailProviderCpp", "src\modules\previewpane\BgcodeThumbnailProviderCpp\BgcodeThumbnailProviderCpp.vcxproj", "{47B0678C-806B-4FE1-9F50-46BA88989532}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BgcodeThumbnailProvider", "src\modules\previewpane\BgcodeThumbnailProvider\BgcodeThumbnailProvider.csproj", "{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTests-BgcodePreviewHandler", "src\modules\previewpane\UnitTests-BgcodePreviewHandler\UnitTests-BgcodePreviewHandler.csproj", "{99CA1509-FB73-456E-AFAF-AB89C017BD72}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTests-BgcodeThumbnailProvider", "src\modules\previewpane\UnitTests-BgcodeThumbnailProvider\UnitTests-BgcodeThumbnailProvider.csproj", "{61CBF221-9452-4934-B685-146285E080D7}"
+EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MouseUtils.UITests", "src\modules\MouseUtils\MouseUtils.UITests\MouseUtils.UITests.csproj", "{4E0AE3A4-2EE0-44D7-A2D0-8769977254A1}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WorkspacesEditorUITest", "src\modules\Workspaces\WorkspacesEditorUITest\WorkspacesEditorUITest.csproj", "{43E779F3-D83C-48B1-BA8D-1912DBD76FC9}"
@@ -2626,6 +2638,54 @@ Global
 		{2694E2FB-DCD5-4BFF-A418-B6C3C7CE3B8E}.Release|ARM64.ActiveCfg = Release|ARM64
 		{2694E2FB-DCD5-4BFF-A418-B6C3C7CE3B8E}.Release|x64.ActiveCfg = Release|x64
 		{2694E2FB-DCD5-4BFF-A418-B6C3C7CE3B8E}.Release|x64.Build.0 = Release|x64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Debug|ARM64.Build.0 = Debug|ARM64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Debug|x64.ActiveCfg = Debug|x64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Debug|x64.Build.0 = Debug|x64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Release|ARM64.ActiveCfg = Release|ARM64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Release|ARM64.Build.0 = Release|ARM64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Release|x64.ActiveCfg = Release|x64
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E}.Release|x64.Build.0 = Release|x64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Debug|ARM64.Build.0 = Debug|ARM64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Debug|x64.ActiveCfg = Debug|x64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Debug|x64.Build.0 = Debug|x64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Release|ARM64.ActiveCfg = Release|ARM64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Release|ARM64.Build.0 = Release|ARM64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Release|x64.ActiveCfg = Release|x64
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}.Release|x64.Build.0 = Release|x64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Debug|ARM64.Build.0 = Debug|ARM64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Debug|x64.ActiveCfg = Debug|x64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Debug|x64.Build.0 = Debug|x64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Release|ARM64.ActiveCfg = Release|ARM64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Release|ARM64.Build.0 = Release|ARM64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Release|x64.ActiveCfg = Release|x64
+		{47B0678C-806B-4FE1-9F50-46BA88989532}.Release|x64.Build.0 = Release|x64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Debug|ARM64.Build.0 = Debug|ARM64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Debug|x64.ActiveCfg = Debug|x64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Debug|x64.Build.0 = Debug|x64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Release|ARM64.ActiveCfg = Release|ARM64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Release|ARM64.Build.0 = Release|ARM64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Release|x64.ActiveCfg = Release|x64
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}.Release|x64.Build.0 = Release|x64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Debug|ARM64.Build.0 = Debug|ARM64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Debug|x64.ActiveCfg = Debug|x64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Debug|x64.Build.0 = Debug|x64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Release|ARM64.ActiveCfg = Release|ARM64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Release|ARM64.Build.0 = Release|ARM64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Release|x64.ActiveCfg = Release|x64
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72}.Release|x64.Build.0 = Release|x64
+		{61CBF221-9452-4934-B685-146285E080D7}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{61CBF221-9452-4934-B685-146285E080D7}.Debug|ARM64.Build.0 = Debug|ARM64
+		{61CBF221-9452-4934-B685-146285E080D7}.Debug|x64.ActiveCfg = Debug|x64
+		{61CBF221-9452-4934-B685-146285E080D7}.Debug|x64.Build.0 = Debug|x64
+		{61CBF221-9452-4934-B685-146285E080D7}.Release|ARM64.ActiveCfg = Release|ARM64
+		{61CBF221-9452-4934-B685-146285E080D7}.Release|ARM64.Build.0 = Release|ARM64
+		{61CBF221-9452-4934-B685-146285E080D7}.Release|x64.ActiveCfg = Release|x64
+		{61CBF221-9452-4934-B685-146285E080D7}.Release|x64.Build.0 = Release|x64
 		{4E0AE3A4-2EE0-44D7-A2D0-8769977254A1}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{4E0AE3A4-2EE0-44D7-A2D0-8769977254A1}.Debug|ARM64.Build.0 = Debug|ARM64
 		{4E0AE3A4-2EE0-44D7-A2D0-8769977254A1}.Debug|x64.ActiveCfg = Debug|x64
@@ -2940,6 +3000,12 @@ Global
 		{0217E86E-3476-9946-DE8E-9D200CEBD47A} = {D1D6BC88-09AE-4FB4-AD24-5DED46A791DD}
 		{5F63C743-F6CE-4DBA-A200-2B3F8A14E8C2} = {3846508C-77EB-4034-A702-F8BB263C4F79}
 		{2694E2FB-DCD5-4BFF-A418-B6C3C7CE3B8E} = {89E20BCE-EB9C-46C8-8B50-E01A82E6FDC3}
+		{9E0CBC06-F29A-4810-B93C-97D53863B95E} = {2F305555-C296-497E-AC20-5FA1B237996A}
+		{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C} = {2F305555-C296-497E-AC20-5FA1B237996A}
+		{47B0678C-806B-4FE1-9F50-46BA88989532} = {2F305555-C296-497E-AC20-5FA1B237996A}
+		{9BC1C986-1E97-4D07-A7B1-CE226C239EFA} = {2F305555-C296-497E-AC20-5FA1B237996A}
+		{99CA1509-FB73-456E-AFAF-AB89C017BD72} = {2F305555-C296-497E-AC20-5FA1B237996A}
+		{61CBF221-9452-4934-B685-146285E080D7} = {2F305555-C296-497E-AC20-5FA1B237996A}
 		{4E0AE3A4-2EE0-44D7-A2D0-8769977254A1} = {322566EF-20DC-43A6-B9F8-616AF942579A}
 		{43E779F3-D83C-48B1-BA8D-1912DBD76FC9} = {A2221D7E-55E7-4BEA-90D1-4F162D670BBF}
 		{2CF78CF7-8FEB-4BE1-9591-55FA25B48FC6} = {1AFB6476-670D-4E80-A464-657E01DFF482}

doc/devdocs/tools/verification-scripts.md

@@ -18,6 +18,7 @@ This script checks the preview handler registration for the following file types
 * .svgz
 * .pdf
 * .gcode
+* .bgcode
 * .stl
 * .txt
 * .ini

installer/PowerToysSetup/Resources.wxs

@@ -233,6 +233,15 @@
         </RegistryKey>
         <File Id="GcodePreviewHandler_$(var.IdSafeLanguage)_File" Source="$(var.BinDir)\$(var.Language)\PowerToys.GcodePreviewHandler.resources.dll" />
       </Component>
+      <Component
+          Id="BgcodePreviewHandler_$(var.IdSafeLanguage)_Component"
+          Directory="Resource$(var.IdSafeLanguage)INSTALLFOLDER"
+          Guid="$(var.CompGUIDPrefix)07">
+        <RegistryKey Root="$(var.RegistryScope)" Key="Software\Classes\powertoys\components">
+          <RegistryValue Type="string" Name="BgcodePreviewHandler_$(var.IdSafeLanguage)_Component" Value="" KeyPath="yes"/>
+        </RegistryKey>
+        <File Id="BgcodePreviewHandler_$(var.IdSafeLanguage)_File" Source="$(var.BinDir)\$(var.Language)\PowerToys.BgcodePreviewHandler.resources.dll" />
+      </Component>
       <!-- PowerToys Run aka Launcher plugin resources -->
       <Component
           Id="Launcher_Calculator_$(var.IdSafeLanguage)_Component"

installer/PowerToysSetupCustomActions/CustomAction.cpp

@@ -1170,7 +1170,7 @@ UINT __stdcall TerminateProcessesCA(MSIHANDLE hInstall)
     }
     processes.resize(bytes / sizeof(processes[0]));
 
-    std::array<std::wstring_view, 39> processesToTerminate = {
+    std::array<std::wstring_view, 41> processesToTerminate = {
         L"PowerToys.PowerLauncher.exe",
         L"PowerToys.Settings.exe",
         L"PowerToys.AdvancedPaste.exe",
@@ -1186,12 +1186,14 @@ UINT __stdcall TerminateProcessesCA(MSIHANDLE hInstall)
         L"PowerToys.PowerRename.exe",
         L"PowerToys.ImageResizer.exe",
         L"PowerToys.GcodeThumbnailProvider.exe",
+        L"PowerToys.BgcodeThumbnailProvider.exe",
         L"PowerToys.PdfThumbnailProvider.exe",
         L"PowerToys.MonacoPreviewHandler.exe",
         L"PowerToys.MarkdownPreviewHandler.exe",
         L"PowerToys.StlThumbnailProvider.exe",
         L"PowerToys.SvgThumbnailProvider.exe",
         L"PowerToys.GcodePreviewHandler.exe",
+        L"PowerToys.BgcodePreviewHandler.exe",
         L"PowerToys.QoiPreviewHandler.exe",
         L"PowerToys.PdfPreviewHandler.exe",
         L"PowerToys.QoiThumbnailProvider.exe",

src/common/FilePreviewCommon/BgcodeBlockType.cs

@@ -0,0 +1,16 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.FilePreviewCommon
+{
+    public enum BgcodeBlockType
+    {
+        FileMetadataBlock = 0,
+        GCodeBlock = 1,
+        SlicerMetadataBlock = 2,
+        PrinterMetadataBlock = 3,
+        PrintMetadataBlock = 4,
+        ThumbnailBlock = 5,
+    }
+}

src/common/FilePreviewCommon/BgcodeChecksumType.cs

@@ -0,0 +1,12 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.FilePreviewCommon
+{
+    public enum BgcodeChecksumType
+    {
+        None = 0,
+        CRC32 = 1,
+    }
+}

src/common/FilePreviewCommon/BgcodeCompressionType.cs

@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.FilePreviewCommon
+{
+    public enum BgcodeCompressionType
+    {
+        NoCompression = 0,
+        DeflateAlgorithm = 1,
+        HeatshrinkAlgorithm11 = 2,
+        HeatshrinkAlgorithm12 = 3,
+    }
+}

src/common/FilePreviewCommon/BgcodeHelper.cs

@@ -0,0 +1,129 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+
+namespace Microsoft.PowerToys.FilePreviewCommon
+{
+    /// <summary>
+    /// Bgcode file helper class.
+    /// </summary>
+    public static class BgcodeHelper
+    {
+        private const uint MagicNumber = 'G' | 'C' << 8 | 'D' << 16 | 'E' << 24;
+
+        /// <summary>
+        /// Gets any thumbnails found in a bgcode file.
+        /// </summary>
+        /// <param name="reader">The <see cref="BinaryReader"/> instance to the bgcode file.</param>
+        /// <returns>The thumbnails found in a bgcode file.</returns>
+        public static IEnumerable<BgcodeThumbnail> GetThumbnails(BinaryReader reader)
+        {
+            var magicNumber = reader.ReadUInt32();
+
+            if (magicNumber != MagicNumber)
+            {
+                throw new InvalidDataException("Invalid magic number.");
+            }
+
+            var version = reader.ReadUInt32();
+
+            if (version != 1)
+            {
+                // Version 1 is the only one that exists
+                throw new InvalidDataException("Unsupported version.");
+            }
+
+            var checksum = (BgcodeChecksumType)reader.ReadUInt16();
+
+            while (reader.BaseStream.Position < reader.BaseStream.Length)
+            {
+                var blockType = (BgcodeBlockType)reader.ReadUInt16();
+                var compression = (BgcodeCompressionType)reader.ReadUInt16();
+                var uncompressedSize = reader.ReadUInt32();
+
+                var size = compression == BgcodeCompressionType.NoCompression ? uncompressedSize : reader.ReadUInt32();
+
+                switch (blockType)
+                {
+                    case BgcodeBlockType.FileMetadataBlock:
+                    case BgcodeBlockType.PrinterMetadataBlock:
+                    case BgcodeBlockType.PrintMetadataBlock:
+                    case BgcodeBlockType.SlicerMetadataBlock:
+                    case BgcodeBlockType.GCodeBlock:
+                        reader.BaseStream.Seek(2 + size, SeekOrigin.Current); // Skip
+
+                        break;
+
+                    case BgcodeBlockType.ThumbnailBlock:
+                        var format = (BgcodeThumbnailFormat)reader.ReadUInt16();
+
+                        reader.BaseStream.Seek(4, SeekOrigin.Current); // Skip width and height
+
+                        var data = ReadAndDecompressData(reader, compression, (int)size);
+
+                        if (data != null)
+                        {
+                            yield return new BgcodeThumbnail(format, data);
+                        }
+
+                        break;
+                }
+
+                if (checksum == BgcodeChecksumType.CRC32)
+                {
+                    reader.BaseStream.Seek(4, SeekOrigin.Current); // Skip checksum
+                }
+            }
+        }
+
+        /// <summary>
+        /// Gets the best thumbnail available in a bgcode file.
+        /// </summary>
+        /// <param name="reader">The <see cref="BinaryReader"/> instance to the gcode file.</param>
+        /// <returns>The best thumbnail available in the gcode file.</returns>
+        public static BgcodeThumbnail? GetBestThumbnail(BinaryReader reader)
+        {
+            return GetThumbnails(reader)
+                .OrderByDescending(x => x.Format switch
+                {
+                    BgcodeThumbnailFormat.PNG => 2,
+                    BgcodeThumbnailFormat.QOI => 1,
+                    BgcodeThumbnailFormat.JPG => 0,
+                    _ => 0,
+                })
+                .ThenByDescending(x => x.Data.Length)
+                .FirstOrDefault();
+        }
+
+        private static byte[]? ReadAndDecompressData(BinaryReader reader, BgcodeCompressionType compression, int size)
+        {
+            // Though the spec doesn't actually mention it, the reference encoder code never applies compression to thumbnails data
+            // which makes complete sense as this data is PNG, JPEG or QOI encoded so already compressed as much as possible!
+            switch (compression)
+            {
+                case BgcodeCompressionType.NoCompression:
+                    return reader.ReadBytes(size);
+
+                case BgcodeCompressionType.DeflateAlgorithm:
+                    var buffer = new byte[size];
+
+                    using (var deflateStream = new DeflateStream(reader.BaseStream, CompressionMode.Decompress, true))
+                    {
+                        deflateStream.ReadExactly(buffer, 0, size);
+                    }
+
+                    return buffer;
+
+                default:
+                    reader.BaseStream.Seek(size, SeekOrigin.Current); // Skip unknown or unsupported compression types
+
+                    return null;
+            }
+        }
+    }
+}

src/common/FilePreviewCommon/BgcodeThumbnail.cs

@@ -0,0 +1,66 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Drawing;
+using System.IO;
+
+namespace Microsoft.PowerToys.FilePreviewCommon
+{
+    /// <summary>
+    /// Represents a bgcode thumbnail.
+    /// </summary>
+    public class BgcodeThumbnail
+    {
+        /// <summary>
+        /// Gets the bgcode thumbnail image format.
+        /// </summary>
+        public BgcodeThumbnailFormat Format { get; }
+
+        /// <summary>
+        /// Gets the bgcode thumbnail image data.
+        /// </summary>
+        public byte[] Data { get; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BgcodeThumbnail"/> class.
+        /// </summary>
+        /// <param name="format">The bgcode thumbnail image format.</param>
+        /// <param name="data">The bgcode thumbnail image data.</param>
+        public BgcodeThumbnail(BgcodeThumbnailFormat format, byte[] data)
+        {
+            Format = format;
+            Data = data;
+        }
+
+        /// <summary>
+        /// Gets a <see cref="Bitmap"/> representing this thumbnail.
+        /// </summary>
+        /// <returns>A <see cref="Bitmap"/> representing this thumbnail.</returns>
+        public Bitmap? GetBitmap()
+        {
+            switch (Format)
+            {
+                case BgcodeThumbnailFormat.JPG:
+                case BgcodeThumbnailFormat.PNG:
+                    return BitmapFromByteArray();
+
+                case BgcodeThumbnailFormat.QOI:
+                    return BitmapFromQoiByteArray();
+
+                default:
+                    return null;
+            }
+        }
+
+        private Bitmap BitmapFromByteArray()
+        {
+            return new Bitmap(new MemoryStream(Data));
+        }
+
+        private Bitmap BitmapFromQoiByteArray()
+        {
+            return QoiImage.FromStream(new MemoryStream(Data));
+        }
+    }
+}

src/common/FilePreviewCommon/BgcodeThumbnailFormat.cs

@@ -0,0 +1,24 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.FilePreviewCommon
+{
+    public enum BgcodeThumbnailFormat
+    {
+        /// <summary>
+        /// PNG image format.
+        /// </summary>
+        PNG = 0,
+
+        /// <summary>
+        /// JPG image format.
+        /// </summary>
+        JPG = 1,
+
+        /// <summary>
+        /// QOI image format.
+        /// </summary>
+        QOI = 2,
+    }
+}

src/common/GPOWrapper/GPOWrapper.cpp

@@ -56,6 +56,10 @@ namespace winrt::PowerToys::GPOWrapper::implementation
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredGcodePreviewEnabledValue());
     }
+    GpoRuleConfigured GPOWrapper::GetConfiguredBgcodePreviewEnabledValue()
+    {
+        return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredBgcodePreviewEnabledValue());
+    }
     GpoRuleConfigured GPOWrapper::GetConfiguredSvgThumbnailsEnabledValue()
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredSvgThumbnailsEnabledValue());
@@ -68,6 +72,10 @@ namespace winrt::PowerToys::GPOWrapper::implementation
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredGcodeThumbnailsEnabledValue());
     }
+    GpoRuleConfigured GPOWrapper::GetConfiguredBgcodeThumbnailsEnabledValue()
+    {
+        return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredBgcodeThumbnailsEnabledValue());
+    }
     GpoRuleConfigured GPOWrapper::GetConfiguredStlThumbnailsEnabledValue()
     {
         return static_cast<GpoRuleConfigured>(powertoys_gpo::getConfiguredStlThumbnailsEnabledValue());

src/common/GPOWrapper/GPOWrapper.h

@@ -21,9 +21,11 @@ namespace winrt::PowerToys::GPOWrapper::implementation
         static GpoRuleConfigured GetConfiguredMouseWithoutBordersEnabledValue();
         static GpoRuleConfigured GetConfiguredPdfPreviewEnabledValue();
         static GpoRuleConfigured GetConfiguredGcodePreviewEnabledValue();
+        static GpoRuleConfigured GetConfiguredBgcodePreviewEnabledValue();
         static GpoRuleConfigured GetConfiguredSvgThumbnailsEnabledValue();
         static GpoRuleConfigured GetConfiguredPdfThumbnailsEnabledValue();
         static GpoRuleConfigured GetConfiguredGcodeThumbnailsEnabledValue();
+        static GpoRuleConfigured GetConfiguredBgcodeThumbnailsEnabledValue();
         static GpoRuleConfigured GetConfiguredStlThumbnailsEnabledValue();
         static GpoRuleConfigured GetConfiguredHostsFileEditorEnabledValue();
         static GpoRuleConfigured GetConfiguredImageResizerEnabledValue();

src/common/GPOWrapper/GPOWrapper.idl

@@ -24,9 +24,11 @@ namespace PowerToys
             static GpoRuleConfigured GetConfiguredMonacoPreviewEnabledValue();
             static GpoRuleConfigured GetConfiguredPdfPreviewEnabledValue();
             static GpoRuleConfigured GetConfiguredGcodePreviewEnabledValue();
+            static GpoRuleConfigured GetConfiguredBgcodePreviewEnabledValue();
             static GpoRuleConfigured GetConfiguredSvgThumbnailsEnabledValue();
             static GpoRuleConfigured GetConfiguredPdfThumbnailsEnabledValue();
             static GpoRuleConfigured GetConfiguredGcodeThumbnailsEnabledValue();
+            static GpoRuleConfigured GetConfiguredBgcodeThumbnailsEnabledValue();
             static GpoRuleConfigured GetConfiguredStlThumbnailsEnabledValue();
             static GpoRuleConfigured GetConfiguredHostsFileEditorEnabledValue();
             static GpoRuleConfigured GetConfiguredImageResizerEnabledValue();

src/common/interop/Constants.cpp

@@ -127,6 +127,10 @@ namespace winrt::PowerToys::Interop::implementation
     {
         return CommonSharedConstants::GCODE_PREVIEW_RESIZE_EVENT;
     }
+    hstring Constants::BgcodePreviewResizeEvent()
+    {
+        return CommonSharedConstants::BGCODE_PREVIEW_RESIZE_EVENT;
+    }
     hstring Constants::QoiPreviewResizeEvent()
     {
         return CommonSharedConstants::QOI_PREVIEW_RESIZE_EVENT;

src/common/interop/Constants.h

@@ -35,6 +35,7 @@ namespace winrt::PowerToys::Interop::implementation
         static hstring RegistryPreviewTriggerEvent();
         static hstring MeasureToolTriggerEvent();
         static hstring GcodePreviewResizeEvent();
+        static hstring BgcodePreviewResizeEvent();
         static hstring QoiPreviewResizeEvent();
         static hstring DevFilesPreviewResizeEvent();
         static hstring MarkdownPreviewResizeEvent();

src/common/interop/Constants.idl

@@ -32,6 +32,7 @@ namespace PowerToys
             static String RegistryPreviewTriggerEvent();
             static String MeasureToolTriggerEvent();
             static String GcodePreviewResizeEvent();
+            static String BgcodePreviewResizeEvent();
             static String QoiPreviewResizeEvent();
             static String DevFilesPreviewResizeEvent();
             static String MarkdownPreviewResizeEvent();

src/common/interop/shared_constants.h

@@ -92,6 +92,9 @@ namespace CommonSharedConstants
     // Path to the event used by GcodePreviewHandler
     const wchar_t GCODE_PREVIEW_RESIZE_EVENT[] = L"Local\\PowerToysGcodePreviewResizeEvent-6ff1f9bd-ccbd-4b24-a79f-40a34fb0317d";
 
+    // Path to the event used by BgcodePreviewHandler
+    const wchar_t BGCODE_PREVIEW_RESIZE_EVENT[] = L"Local\\PowerToysBgcodePreviewResizeEvent-1a76a553-919a-49e0-8179-776582d8e476";
+
     // Path to the event used by QoiPreviewHandler
     const wchar_t QOI_PREVIEW_RESIZE_EVENT[] = L"Local\\PowerToysQoiPreviewResizeEvent-579518d1-8c8b-494f-8143-04f43d761ead";
 

src/common/logger/logger_settings.h

@@ -19,6 +19,10 @@ struct LogSettings
     inline const static std::wstring gcodePrevLogPath = L"logs\\FileExplorer_localLow\\GcodePreviewHandler\\gcode-prev-handler-log.log";
     inline const static std::string gcodeThumbLoggerName = "GcodeThumbnailProvider";
     inline const static std::wstring gcodeThumbLogPath = L"logs\\FileExplorer_localLow\\GcodeThumbnailProvider\\gcode-thumbnail-provider-log.log";
+    inline const static std::string bgcodePrevLoggerName = "bgcodePrevHandler";
+    inline const static std::wstring bgcodePrevLogPath = L"logs\\FileExplorer_localLow\\BgcodePreviewHandler\\bgcode-prev-handler-log.log";
+    inline const static std::string bgcodeThumbLoggerName = "BgcodeThumbnailProvider";
+    inline const static std::wstring bgcodeThumbLogPath = L"logs\\FileExplorer_localLow\\BgcodeThumbnailProvider\\bgcode-thumbnail-provider-log.log";
     inline const static std::string mdPrevLoggerName = "MDPrevHandler";
     inline const static std::wstring mdPrevLogPath = L"logs\\FileExplorer_localLow\\MDPrevHandler\\md-prev-handler-log.log";
     inline const static std::string monacoPrevLoggerName = "MonacoPrevHandler";

src/common/utils/gpo.h

@@ -37,9 +37,11 @@ namespace powertoys_gpo
     const std::wstring POLICY_CONFIGURE_ENABLED_MONACO_PREVIEW = L"ConfigureEnabledUtilityFileExplorerMonacoPreview";
     const std::wstring POLICY_CONFIGURE_ENABLED_PDF_PREVIEW = L"ConfigureEnabledUtilityFileExplorerPDFPreview";
     const std::wstring POLICY_CONFIGURE_ENABLED_GCODE_PREVIEW = L"ConfigureEnabledUtilityFileExplorerGcodePreview";
+    const std::wstring POLICY_CONFIGURE_ENABLED_BGCODE_PREVIEW = L"ConfigureEnabledUtilityFileExplorerBgcodePreview";
     const std::wstring POLICY_CONFIGURE_ENABLED_SVG_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerSVGThumbnails";
     const std::wstring POLICY_CONFIGURE_ENABLED_PDF_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerPDFThumbnails";
     const std::wstring POLICY_CONFIGURE_ENABLED_GCODE_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerGcodeThumbnails";
+    const std::wstring POLICY_CONFIGURE_ENABLED_BGCODE_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerBgcodeThumbnails";
     const std::wstring POLICY_CONFIGURE_ENABLED_STL_THUMBNAILS = L"ConfigureEnabledUtilityFileExplorerSTLThumbnails";
     const std::wstring POLICY_CONFIGURE_ENABLED_HOSTS_FILE_EDITOR = L"ConfigureEnabledUtilityHostsFileEditor";
     const std::wstring POLICY_CONFIGURE_ENABLED_IMAGE_RESIZER = L"ConfigureEnabledUtilityImageResizer";
@@ -328,6 +330,11 @@ namespace powertoys_gpo
         return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_GCODE_PREVIEW);
     }
 
+    inline gpo_rule_configured_t getConfiguredBgcodePreviewEnabledValue()
+    {
+        return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_BGCODE_PREVIEW);
+    }
+
     inline gpo_rule_configured_t getConfiguredSvgThumbnailsEnabledValue()
     {
         return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_SVG_THUMBNAILS);
@@ -343,6 +350,11 @@ namespace powertoys_gpo
         return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_GCODE_THUMBNAILS);
     }
 
+    inline gpo_rule_configured_t getConfiguredBgcodeThumbnailsEnabledValue()
+    {
+        return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_BGCODE_THUMBNAILS);
+    }
+
     inline gpo_rule_configured_t getConfiguredStlThumbnailsEnabledValue()
     {
         return getUtilityEnabledValue(POLICY_CONFIGURE_ENABLED_STL_THUMBNAILS);

src/common/utils/modulesRegistry.h

@@ -17,6 +17,7 @@ namespace NonLocalizable
     const static std::vector<std::wstring> ExtMarkdown = { L".md", L".markdown", L".mdown", L".mkdn", L".mkd", L".mdwn", L".mdtxt", L".mdtext" };
     const static std::vector<std::wstring> ExtPDF      = { L".pdf" };
     const static std::vector<std::wstring> ExtGCode    = { L".gcode" };
+    const static std::vector<std::wstring> ExtBGCode   = { L".bgcode" };
     const static std::vector<std::wstring> ExtSTL      = { L".stl" };
     const static std::vector<std::wstring> ExtQOI      = { L".qoi" };
     const static std::vector<std::wstring> ExtNoNoNo   = {
@@ -146,6 +147,19 @@ inline registry::ChangeSet getGcodePreviewHandlerChangeSet(const std::wstring in
                                   NonLocalizable::ExtGCode);
 }
 
+inline registry::ChangeSet getBgcodePreviewHandlerChangeSet(const std::wstring installationDir, const bool perUser)
+{
+    using namespace registry::shellex;
+    return generatePreviewHandler(PreviewHandlerType::preview,
+                                  perUser,
+                                  L"{0e6d5bdd-d5f8-4692-a089-8bb88cdd37f4}",
+                                  get_std_product_version(),
+                                  (fs::path{ installationDir } / LR"d(PowerToys.BgcodePreviewHandlerCpp.dll)d").wstring(),
+                                  L"BgcodePreviewHandler",
+                                  L"Binary G-code Preview Handler",
+                                  NonLocalizable::ExtBGCode);
+}
+
 inline registry::ChangeSet getQoiPreviewHandlerChangeSet(const std::wstring installationDir, const bool perUser)
 {
     using namespace registry::shellex;
@@ -200,6 +214,19 @@ inline registry::ChangeSet getGcodeThumbnailHandlerChangeSet(const std::wstring
                                   NonLocalizable::ExtGCode);
 }
 
+inline registry::ChangeSet getBgcodeThumbnailHandlerChangeSet(const std::wstring installationDir, const bool perUser)
+{
+    using namespace registry::shellex;
+    return generatePreviewHandler(PreviewHandlerType::thumbnail,
+                                  perUser,
+                                  L"{5c93a1e4-99d0-4fb3-991c-6c296a27be21}",
+                                  get_std_product_version(),
+                                  (fs::path{ installationDir } / LR"d(PowerToys.BgcodeThumbnailProviderCpp.dll)d").wstring(),
+                                  L"BgcodeThumbnailProvider",
+                                  L"Binary G-code Thumbnail Provider",
+                                  NonLocalizable::ExtBGCode);
+}
+
 inline registry::ChangeSet getStlThumbnailHandlerChangeSet(const std::wstring installationDir, const bool perUser)
 {
     using namespace registry::shellex;
@@ -275,9 +302,11 @@ inline std::vector<registry::ChangeSet> getAllOnByDefaultModulesChangeSets(const
              getMdPreviewHandlerChangeSet(installationDir, PER_USER),
              getMonacoPreviewHandlerChangeSet(installationDir, PER_USER),
              getGcodePreviewHandlerChangeSet(installationDir, PER_USER),
+             getBgcodePreviewHandlerChangeSet(installationDir, PER_USER),
              getQoiPreviewHandlerChangeSet(installationDir, PER_USER),
              getSvgThumbnailHandlerChangeSet(installationDir, PER_USER),
              getGcodeThumbnailHandlerChangeSet(installationDir, PER_USER),
+             getBgcodeThumbnailHandlerChangeSet(installationDir, PER_USER),
              getStlThumbnailHandlerChangeSet(installationDir, PER_USER),
              getQoiThumbnailHandlerChangeSet(installationDir, PER_USER),
              getRegistryPreviewChangeSet(installationDir, PER_USER) };
@@ -291,10 +320,12 @@ inline std::vector<registry::ChangeSet> getAllModulesChangeSets(const std::wstri
              getMonacoPreviewHandlerChangeSet(installationDir, PER_USER),
              getPdfPreviewHandlerChangeSet(installationDir, PER_USER),
              getGcodePreviewHandlerChangeSet(installationDir, PER_USER),
+             getBgcodePreviewHandlerChangeSet(installationDir, PER_USER),
              getQoiPreviewHandlerChangeSet(installationDir, PER_USER),
              getSvgThumbnailHandlerChangeSet(installationDir, PER_USER),
              getPdfThumbnailHandlerChangeSet(installationDir, PER_USER),
              getGcodeThumbnailHandlerChangeSet(installationDir, PER_USER),
+             getBgcodeThumbnailHandlerChangeSet(installationDir, PER_USER),
              getStlThumbnailHandlerChangeSet(installationDir, PER_USER),
              getQoiThumbnailHandlerChangeSet(installationDir, PER_USER),
              getRegistryPreviewChangeSet(installationDir, PER_USER),

src/dsc/Microsoft.PowerToys.Configure/examples/disableAllModules.winget

@@ -54,6 +54,8 @@ properties:
           EnablePdfThumbnail: false
           EnableGcodePreview: false
           EnableGcodeThumbnail: false
+          EnableBgcodePreview: false
+          EnableBgcodeThumbnail: false
           EnableStlThumbnail: false
           EnableQoiPreview: false
           EnableQoiThumbnail: false

src/dsc/Microsoft.PowerToys.Configure/examples/enableAllModules.winget

@@ -54,6 +54,8 @@ properties:
           EnablePdfThumbnail: true
           EnableGcodePreview: true
           EnableGcodeThumbnail: true
+          EnableBgcodePreview: true
+          EnableBgcodeThumbnail: true
           EnableStlThumbnail: true
           EnableQoiPreview: true
           EnableQoiThumbnail: true

src/gpo/assets/PowerToys.admx

@@ -217,6 +217,16 @@
         <decimal value="0" />
       </disabledValue>
     </policy>
+    <policy name="ConfigureEnabledUtilityFileExplorerBgcodePreview" class="Both" displayName="$(string.ConfigureEnabledUtilityFileExplorerBgcodePreview)" explainText="$(string.ConfigureEnabledUtilityDescription)" key="Software\Policies\PowerToys" valueName="ConfigureEnabledUtilityFileExplorerBgcodePreview">
+      <parentCategory ref="PowerToys" />
+      <supportedOn ref="SUPPORTED_POWERTOYS_0_93_0" />
+      <enabledValue>
+        <decimal value="1" />
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0" />
+      </disabledValue>
+    </policy>
     <policy name="ConfigureEnabledUtilityFileExplorerSVGThumbnails" class="Both" displayName="$(string.ConfigureEnabledUtilityFileExplorerSVGThumbnails)" explainText="$(string.ConfigureEnabledUtilityDescription)" key="Software\Policies\PowerToys" valueName="ConfigureEnabledUtilityFileExplorerSVGThumbnails">
       <parentCategory ref="PowerToys" />
       <supportedOn ref="SUPPORTED_POWERTOYS_0_64_0" />
@@ -247,6 +257,16 @@
         <decimal value="0" />
       </disabledValue>
     </policy>
+    <policy name="ConfigureEnabledUtilityFileExplorerBgcodeThumbnails" class="Both" displayName="$(string.ConfigureEnabledUtilityFileExplorerBgcodeThumbnails)" explainText="$(string.ConfigureEnabledUtilityDescription)" key="Software\Policies\PowerToys" valueName="ConfigureEnabledUtilityFileExplorerBgcodeThumbnails">
+      <parentCategory ref="PowerToys" />
+      <supportedOn ref="SUPPORTED_POWERTOYS_0_93_0" />
+      <enabledValue>
+        <decimal value="1" />
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0" />
+      </disabledValue>
+    </policy>
     <policy name="ConfigureEnabledUtilityFileExplorerQOIPreview" class="Both" displayName="$(string.ConfigureEnabledUtilityFileExplorerQOIPreview)" explainText="$(string.ConfigureEnabledUtilityDescription)" key="Software\Policies\PowerToys" valueName="ConfigureEnabledUtilityFileExplorerQOIPreview">
       <parentCategory ref="PowerToys" />
       <supportedOn ref="SUPPORTED_POWERTOYS_0_76_0" />

src/gpo/assets/en-US/PowerToys.adml

@@ -253,9 +253,11 @@ If you don't configure this policy, the user will be able to control the setting
       <string id="ConfigureEnabledUtilityFileExplorerMonacoPreview">Source code file preview: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityFileExplorerPDFPreview">PDF file preview: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityFileExplorerGcodePreview">Gcode file preview: Configure enabled state</string>
+      <string id="ConfigureEnabledUtilityFileExplorerBgcodePreview">BGcode file preview: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityFileExplorerSVGThumbnails">SVG file thumbnail: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityFileExplorerPDFThumbnails">PDF file thumbnail: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityFileExplorerGcodeThumbnails">Gcode file thumbnail: Configure enabled state</string>
+      <string id="ConfigureEnabledUtilityFileExplorerBgcodeThumbnails">BGcode file thumbnail: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityFileExplorerSTLThumbnails">STL file thumbnail: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityHostsFileEditor">Hosts file editor: Configure enabled state</string>
       <string id="ConfigureEnabledUtilityImageResizer">Image Resizer: Configure enabled state</string>

src/modules/previewpane/BgcodePreviewHandler/BgcodePreviewHandler.csproj

@@ -0,0 +1,65 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="..\..\..\Common.SelfContained.props" />
+
+  <PropertyGroup>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWindowsForms>true</UseWindowsForms>
+    <AssemblyTitle>PowerToys.BgcodePreviewHandler</AssemblyTitle>
+    <AssemblyDescription>PowerToys BgcodePreviewHandler</AssemblyDescription>
+    <Description>PowerToys BgcodePreviewHandler</Description>
+    <DocumentationFile>..\..\..\..\$(Platform)\$(Configuration)\BgcodePreviewPaneDocumentation.xml</DocumentationFile>
+    <OutputPath>..\..\..\..\$(Platform)\$(Configuration)</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <GenerateSatelliteAssembliesForCore>true</GenerateSatelliteAssembliesForCore>
+    <AssemblyName>PowerToys.BgcodePreviewHandler</AssemblyName>
+    <ProjectGuid>{9E0CBC06-F29A-4810-B93C-97D53863B95E}</ProjectGuid>
+    <RootNamespace>Microsoft.PowerToys.PreviewHandler.Bgcode</RootNamespace>
+    <ApplicationHighDpiMode>PerMonitorV2</ApplicationHighDpiMode>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Update="BgcodePreviewHandlerControl.cs" />
+    <Compile Update="Properties\Resource.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resource.resx</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <!-- See https://learn.microsoft.com/windows/apps/develop/platform/csharp-winrt/net-projection-from-cppwinrt-component for more info -->
+  <PropertyGroup>
+    <CsWinRTIncludes>PowerToys.GPOWrapper</CsWinRTIncludes>
+    <CsWinRTGeneratedFilesDir>$(OutDir)</CsWinRTGeneratedFilesDir>
+    <ErrorOnDuplicatePublishOutputFiles>false</ErrorOnDuplicatePublishOutputFiles>
+  </PropertyGroup>
+  <PropertyGroup>
+    <!-- Disable missing comment warning. WinRT/C++ libraries added won't have comments on their reflections. -->
+    <NoWarn>$(NoWarn);1591</NoWarn>
+    <OutputType>WinExe</OutputType>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.IO.Abstractions" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\common\Common.UI\Common.UI.csproj" />
+    <ProjectReference Include="..\..\..\common\FilePreviewCommon\FilePreviewCommon.csproj" />
+    <ProjectReference Include="..\..\..\common\GPOWrapper\GPOWrapper.vcxproj" />
+    <ProjectReference Include="..\..\..\common\interop\PowerToys.Interop.vcxproj" />
+    <ProjectReference Include="..\..\..\common\ManagedTelemetry\Telemetry\ManagedTelemetry.csproj" />
+    <ProjectReference Include="..\common\PreviewHandlerCommon.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Update="Properties\Resource.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resource.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+
+</Project>

src/modules/previewpane/BgcodePreviewHandler/BgcodePreviewHandlerControl.cs

@@ -0,0 +1,179 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Common;
+using Microsoft.PowerToys.FilePreviewCommon;
+using Microsoft.PowerToys.PreviewHandler.Bgcode.Telemetry.Events;
+using Microsoft.PowerToys.Telemetry;
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode
+{
+    /// <summary>
+    /// Implementation of Control for Bgcode Preview Handler.
+    /// </summary>
+    public class BgcodePreviewHandlerControl : FormHandlerControl
+    {
+        /// <summary>
+        /// Picture box control to display the Binary G-code thumbnail.
+        /// </summary>
+        private PictureBox _pictureBox;
+
+        /// <summary>
+        /// Text box to display the information about blocked elements from Svg.
+        /// </summary>
+        private RichTextBox _textBox;
+
+        /// <summary>
+        /// Represent if a text box info bar is added for showing message.
+        /// </summary>
+        private bool _infoBarAdded;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="BgcodePreviewHandlerControl"/> class.
+        /// </summary>
+        public BgcodePreviewHandlerControl()
+        {
+            SetBackgroundColor(Settings.BackgroundColor);
+        }
+
+        /// <summary>
+        /// Start the preview on the Control.
+        /// </summary>
+        /// <param name="dataSource">Stream reference to access source file.</param>
+        public override void DoPreview<T>(T dataSource)
+        {
+            if (global::PowerToys.GPOWrapper.GPOWrapper.GetConfiguredBgcodePreviewEnabledValue() == global::PowerToys.GPOWrapper.GpoRuleConfigured.Disabled)
+            {
+                // GPO is disabling this utility. Show an error message instead.
+                _infoBarAdded = true;
+                AddTextBoxControl(Properties.Resource.GpoDisabledErrorText);
+                Resize += FormResized;
+                base.DoPreview(dataSource);
+
+                return;
+            }
+
+            try
+            {
+                Bitmap thumbnail = null;
+
+                if (!(dataSource is string filePath))
+                {
+                    throw new ArgumentException($"{nameof(dataSource)} for {nameof(BgcodePreviewHandlerControl)} must be a string but was a '{typeof(T)}'");
+                }
+
+                FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+
+                using (var reader = new BinaryReader(fs))
+                {
+                    var bgcodeThumbnail = BgcodeHelper.GetBestThumbnail(reader);
+
+                    thumbnail = bgcodeThumbnail?.GetBitmap();
+                }
+
+                _infoBarAdded = false;
+
+                if (thumbnail == null)
+                {
+                    _infoBarAdded = true;
+                    AddTextBoxControl(Properties.Resource.BgcodeWithoutEmbeddedThumbnails);
+                }
+                else
+                {
+                    AddPictureBoxControl(thumbnail);
+                }
+
+                Resize += FormResized;
+                base.DoPreview(fs);
+                try
+                {
+                    PowerToysTelemetry.Log.WriteEvent(new BgcodeFilePreviewed());
+                }
+                catch
+                { // Should not crash if sending telemetry is failing. Ignore the exception.
+                }
+            }
+            catch (Exception ex)
+            {
+                PreviewError(ex, dataSource);
+            }
+        }
+
+        /// <summary>
+        /// Occurs when RichtextBox is resized.
+        /// </summary>
+        /// <param name="sender">Reference to resized control.</param>
+        /// <param name="e">Provides data for the ContentsResized event.</param>
+        private void RTBContentsResized(object sender, ContentsResizedEventArgs e)
+        {
+            var richTextBox = sender as RichTextBox;
+            richTextBox.Height = e.NewRectangle.Height + 5;
+        }
+
+        /// <summary>
+        /// Occurs when form is resized.
+        /// </summary>
+        /// <param name="sender">Reference to resized control.</param>
+        /// <param name="e">Provides data for the resize event.</param>
+        private void FormResized(object sender, EventArgs e)
+        {
+            if (_infoBarAdded)
+            {
+                _textBox.Width = Width;
+            }
+        }
+
+        /// <summary>
+        /// Adds a PictureBox Control to Control Collection.
+        /// </summary>
+        /// <param name="image">Image to display on PictureBox Control.</param>
+        private void AddPictureBoxControl(Image image)
+        {
+            _pictureBox = new PictureBox();
+            _pictureBox.BackgroundImage = image;
+            _pictureBox.BackgroundImageLayout = Width >= image.Width && Height >= image.Height ? ImageLayout.Center : ImageLayout.Zoom;
+            _pictureBox.Dock = DockStyle.Fill;
+            Controls.Add(_pictureBox);
+        }
+
+        /// <summary>
+        /// Adds a Text Box in Controls for showing information about blocked elements.
+        /// </summary>
+        /// <param name="message">Message to be displayed in textbox.</param>
+        private void AddTextBoxControl(string message)
+        {
+            _textBox = new RichTextBox();
+            _textBox.Text = message;
+            _textBox.BackColor = Color.LightYellow;
+            _textBox.Multiline = true;
+            _textBox.Dock = DockStyle.Top;
+            _textBox.ReadOnly = true;
+            _textBox.ContentsResized += RTBContentsResized;
+            _textBox.ScrollBars = RichTextBoxScrollBars.None;
+            _textBox.BorderStyle = BorderStyle.None;
+            Controls.Add(_textBox);
+        }
+
+        /// <summary>
+        /// Called when an error occurs during preview.
+        /// </summary>
+        /// <param name="exception">The exception which occurred.</param>
+        /// <param name="dataSource">Stream reference to access source file.</param>
+        private void PreviewError<T>(Exception exception, T dataSource)
+        {
+            try
+            {
+                PowerToysTelemetry.Log.WriteEvent(new BgcodeFilePreviewError { Message = exception.Message });
+            }
+            catch
+            { // Should not crash if sending telemetry is failing. Ignore the exception.
+            }
+
+            Controls.Clear();
+            _infoBarAdded = true;
+            AddTextBoxControl(Properties.Resource.BgcodeNotPreviewedError);
+            base.DoPreview(dataSource);
+        }
+    }
+}

src/modules/previewpane/BgcodePreviewHandler/BgcodePreviewHandlerControl.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

src/modules/previewpane/BgcodePreviewHandler/Program.cs

@@ -0,0 +1,80 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Globalization;
+using System.Windows.Threading;
+
+using Common.UI;
+using Microsoft.PowerToys.Telemetry;
+using PowerToys.Interop;
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode
+{
+    internal static class Program
+    {
+        private static CancellationTokenSource _tokenSource = new CancellationTokenSource();
+
+        private static BgcodePreviewHandlerControl _previewHandlerControl;
+
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        public static void Main(string[] args)
+        {
+            ApplicationConfiguration.Initialize();
+            if (args != null)
+            {
+                if (args.Length == 6)
+                {
+                    ETWTrace etwTrace = new ETWTrace(Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"), "AppData", "LocalLow", "Microsoft", "PowerToys", "etw"));
+
+                    string filePath = args[0];
+                    IntPtr hwnd = IntPtr.Parse(args[1], NumberStyles.HexNumber, CultureInfo.InvariantCulture);
+
+                    int left = Convert.ToInt32(args[2], 10);
+                    int right = Convert.ToInt32(args[3], 10);
+                    int top = Convert.ToInt32(args[4], 10);
+                    int bottom = Convert.ToInt32(args[5], 10);
+                    Rectangle s = new Rectangle(left, top, right - left, bottom - top);
+
+                    _previewHandlerControl = new BgcodePreviewHandlerControl();
+
+                    if (!_previewHandlerControl.SetWindow(hwnd, s))
+                    {
+                        return;
+                    }
+
+                    _previewHandlerControl.DoPreview(filePath);
+
+                    NativeEventWaiter.WaitForEventLoop(
+                        Constants.GcodePreviewResizeEvent(),
+                        () =>
+                        {
+                            Rectangle s = default;
+                            if (!_previewHandlerControl.SetRect(s))
+                            {
+                                etwTrace?.Dispose();
+
+                                // When the parent HWND became invalid, the application won't respond to Application.Exit().
+                                Environment.Exit(0);
+                            }
+                        },
+                        Dispatcher.CurrentDispatcher,
+                        _tokenSource.Token);
+
+                    etwTrace?.Dispose();
+                }
+                else
+                {
+                    MessageBox.Show("Wrong number of args: " + args.Length.ToString(CultureInfo.InvariantCulture));
+                }
+            }
+
+            // To customize application configuration such as set high DPI settings or default font,
+            // see https://aka.ms/applicationconfiguration.
+            Application.Run();
+        }
+    }
+}

src/modules/previewpane/BgcodePreviewHandler/Properties/Resource.Designer.cs

@@ -0,0 +1,90 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode.Properties {
+    using System;
+    
+    
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "17.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resource {
+        
+        private static global::System.Resources.ResourceManager resourceMan;
+        
+        private static global::System.Globalization.CultureInfo resourceCulture;
+        
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resource() {
+        }
+        
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager {
+            get {
+                if (object.ReferenceEquals(resourceMan, null)) {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Microsoft.PowerToys.PreviewHandler.Bgcode.Properties.Resource", typeof(Resource).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+        
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture {
+            get {
+                return resourceCulture;
+            }
+            set {
+                resourceCulture = value;
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to This Binary G-code could not be previewed due to an internal error..
+        /// </summary>
+        internal static string BgcodeNotPreviewedError {
+            get {
+                return ResourceManager.GetString("BgcodeNotPreviewedError", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to This Binary G-code does not contain any embedded thumbnails..
+        /// </summary>
+        internal static string BgcodeWithoutEmbeddedThumbnails {
+            get {
+                return ResourceManager.GetString("BgcodeWithoutEmbeddedThumbnails", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Tried to start with a GPO policy setting the utility to always be disabled. Please contact your systems administrator..
+        /// </summary>
+        internal static string GpoDisabledErrorText {
+            get {
+                return ResourceManager.GetString("GpoDisabledErrorText", resourceCulture);
+            }
+        }
+    }
+}

src/modules/previewpane/BgcodePreviewHandler/Properties/Resource.resx

@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <data name="BgcodeNotPreviewedError" xml:space="preserve">
+    <value>This Binary G-code could not be previewed due to an internal error.</value>
+    <comment>This text is displayed if Binary G-code fails to preview</comment>
+  </data>
+  <data name="BgcodeWithoutEmbeddedThumbnails" xml:space="preserve">
+    <value>This Binary G-code does not contain any embedded thumbnails.</value>
+  </data>
+  <data name="GpoDisabledErrorText" xml:space="preserve">
+    <value>Tried to start with a GPO policy setting the utility to always be disabled. Please contact your systems administrator.</value>
+    <comment>GPO stands for the Windows Group Policy Object feature.</comment>
+  </data>
+</root>

src/modules/previewpane/BgcodePreviewHandler/Settings.cs

@@ -0,0 +1,38 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode
+{
+    internal sealed class Settings
+    {
+        /// <summary>
+        /// Gets the color of the window background.
+        /// Even though this is not a setting yet, it's retrieved from a "Settings" class to be aligned with other preview handlers that contain this setting.
+        /// It's possible it can be converted into a setting in the future.
+        /// </summary>
+        public static Color BackgroundColor
+        {
+            get
+            {
+                if (GetTheme() == "dark")
+                {
+                    return Color.FromArgb(30, 30, 30); // #1e1e1e
+                }
+                else
+                {
+                    return Color.White;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Returns the theme.
+        /// </summary>
+        /// <returns>Theme that should be used.</returns>
+        public static string GetTheme()
+        {
+            return Common.UI.ThemeManager.GetWindowsBaseColor().ToLowerInvariant();
+        }
+    }
+}

src/modules/previewpane/BgcodePreviewHandler/Telemetry/Events/BgcodeFileHandlerLoaded.cs

@@ -0,0 +1,22 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.Tracing;
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event to be raised when a bgcode file has been viewed in the preview pane.
+    /// </summary>
+    [EventData]
+    [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)]
+    public class BgcodeFileHandlerLoaded : EventBase, IEvent
+    {
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServiceUsage;
+    }
+}

src/modules/previewpane/BgcodePreviewHandler/Telemetry/Events/BgcodeFilePreviewError.cs

@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.Tracing;
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event to be raised when an error has occurred in the preview pane.
+    /// </summary>
+    [EventData]
+    [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)]
+    public class BgcodeFilePreviewError : EventBase, IEvent
+    {
+        /// <summary>
+        /// Gets or sets the error message to log as part of the telemetry event.
+        /// </summary>
+        public string Message { get; set; }
+
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServicePerformance;
+    }
+}

src/modules/previewpane/BgcodePreviewHandler/Telemetry/Events/BgcodeFilePreviewed.cs

@@ -0,0 +1,22 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.Tracing;
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Bgcode.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event to be raised when a bgcode file has been viewed in the preview pane.
+    /// </summary>
+    [EventData]
+    [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicProperties)]
+    public class BgcodeFilePreviewed : EventBase, IEvent
+    {
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServiceUsage;
+    }
+}

src/modules/previewpane/BgcodePreviewHandlerCpp/BgcodePreviewHandler.cpp

@@ -0,0 +1,284 @@
+#include "pch.h"
+#include "BgcodePreviewHandler.h"
+#include "../powerpreview/powerpreviewConstants.h"
+
+#include <shellapi.h>
+#include <Shlwapi.h>
+#include <string>
+
+#include <common/interop/shared_constants.h>
+#include <common/logger/logger.h>
+#include <common/SettingsAPI/settings_helpers.h>
+#include <common/utils/process_path.h>
+#include <common/Themes/windows_colors.h>
+
+extern HINSTANCE g_hInst;
+extern long g_cDllRef;
+
+BgcodePreviewHandler::BgcodePreviewHandler() :
+    m_cRef(1), m_hwndParent(NULL), m_rcParent(), m_punkSite(NULL), m_process(NULL)
+{
+    m_resizeEvent = CreateEvent(nullptr, false, false, CommonSharedConstants::BGCODE_PREVIEW_RESIZE_EVENT);
+
+    std::filesystem::path logFilePath(PTSettingsHelper::get_local_low_folder_location());
+    logFilePath.append(LogSettings::bgcodePrevLogPath);
+    Logger::init(LogSettings::bgcodePrevLoggerName, logFilePath.wstring(), PTSettingsHelper::get_log_settings_file_location());
+
+    InterlockedIncrement(&g_cDllRef);
+}
+
+BgcodePreviewHandler::~BgcodePreviewHandler()
+{
+    InterlockedDecrement(&g_cDllRef);
+}
+
+#pragma region IUnknown
+
+IFACEMETHODIMP BgcodePreviewHandler::QueryInterface(REFIID riid, void** ppv)
+{
+    static const QITAB qit[] = {
+        QITABENT(BgcodePreviewHandler, IPreviewHandler),
+        QITABENT(BgcodePreviewHandler, IInitializeWithFile),
+        QITABENT(BgcodePreviewHandler, IPreviewHandlerVisuals),
+        QITABENT(BgcodePreviewHandler, IOleWindow),
+        QITABENT(BgcodePreviewHandler, IObjectWithSite),
+        { 0 },
+    };
+    return QISearch(this, qit, riid, ppv);
+}
+
+IFACEMETHODIMP_(ULONG)
+BgcodePreviewHandler::AddRef()
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+IFACEMETHODIMP_(ULONG)
+BgcodePreviewHandler::Release()
+{
+    ULONG cRef = InterlockedDecrement(&m_cRef);
+    if (0 == cRef)
+    {
+        delete this;
+    }
+    return cRef;
+}
+
+#pragma endregion
+
+#pragma region IInitializationWithFile
+
+IFACEMETHODIMP BgcodePreviewHandler::Initialize(LPCWSTR pszFilePath, DWORD grfMode)
+{
+    m_filePath = pszFilePath;
+    return S_OK;
+}
+
+#pragma endregion
+
+#pragma region IPreviewHandler
+
+IFACEMETHODIMP BgcodePreviewHandler::SetWindow(HWND hwnd, const RECT* prc)
+{
+    if (hwnd && prc)
+    {
+        m_hwndParent = hwnd;
+        m_rcParent = *prc;
+    }
+    return S_OK;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::SetFocus()
+{
+    return S_OK;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::QueryFocus(HWND* phwnd)
+{
+    HRESULT hr = E_INVALIDARG;
+    if (phwnd)
+    {
+        *phwnd = ::GetFocus();
+        if (*phwnd)
+        {
+            hr = S_OK;
+        }
+        else
+        {
+            hr = HRESULT_FROM_WIN32(GetLastError());
+        }
+    }
+    return hr;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::TranslateAccelerator(MSG* pmsg)
+{
+    HRESULT hr = S_FALSE;
+    IPreviewHandlerFrame* pFrame = NULL;
+    if (m_punkSite && SUCCEEDED(m_punkSite->QueryInterface(&pFrame)))
+    {
+        hr = pFrame->TranslateAccelerator(pmsg);
+
+        pFrame->Release();
+    }
+    return hr;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::SetRect(const RECT* prc)
+{
+    HRESULT hr = E_INVALIDARG;
+    if (prc != NULL)
+    {
+        if (m_rcParent.left == 0 && m_rcParent.top == 0 && m_rcParent.right == 0 && m_rcParent.bottom == 0 && (prc->left != 0 || prc->top != 0 || prc->right != 0 || prc->bottom != 0))
+        {
+            // BgcodePreviewHandler position first initialisation, do the first preview
+            m_rcParent = *prc;
+            DoPreview();
+        }
+        if (!m_resizeEvent)
+        {
+            Logger::error(L"Failed to create resize event for BgcodePreviewHandler");
+        }
+        else
+        {
+            if (m_rcParent.right != prc->right || m_rcParent.left != prc->left || m_rcParent.top != prc->top || m_rcParent.bottom != prc->bottom)
+            {
+                if (!SetEvent(m_resizeEvent))
+                {
+                    Logger::error(L"Failed to signal resize event for BgcodePreviewHandler");
+                }
+            }
+        }
+        m_rcParent = *prc;
+        hr = S_OK;
+    }
+    return hr;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::DoPreview()
+{
+    try
+    {
+        if (m_hwndParent == NULL || (m_rcParent.left == 0 && m_rcParent.top == 0 && m_rcParent.right == 0 && m_rcParent.bottom == 0))
+        {
+            // Postponing Start BgcodePreviewHandler.exe, parent and position not yet initialized. Preview will be done after initialisation.
+            return S_OK;
+        }
+        Logger::info(L"Starting BgcodePreviewHandler.exe");
+
+        STARTUPINFO info = { sizeof(info) };
+        std::wstring cmdLine{ L"\"" + m_filePath + L"\"" };
+        cmdLine += L" ";
+        std::wostringstream ss;
+        ss << std::hex << m_hwndParent;
+
+        cmdLine += ss.str();
+        cmdLine += L" ";
+        cmdLine += std::to_wstring(m_rcParent.left);
+        cmdLine += L" ";
+        cmdLine += std::to_wstring(m_rcParent.right);
+        cmdLine += L" ";
+        cmdLine += std::to_wstring(m_rcParent.top);
+        cmdLine += L" ";
+        cmdLine += std::to_wstring(m_rcParent.bottom);
+        std::wstring appPath = get_module_folderpath(g_hInst) + L"\\PowerToys.BgcodePreviewHandler.exe";
+
+        SHELLEXECUTEINFO sei{ sizeof(sei) };
+        sei.fMask = { SEE_MASK_NOCLOSEPROCESS | SEE_MASK_FLAG_NO_UI };
+        sei.lpFile = appPath.c_str();
+        sei.lpParameters = cmdLine.c_str();
+        sei.nShow = SW_SHOWDEFAULT;
+        ShellExecuteEx(&sei);
+
+        // Prevent to leak processes: preview is called multiple times when minimizing and restoring Explorer window
+        if (m_process)
+        {
+            TerminateProcess(m_process, 0);
+        }
+
+        m_process = sei.hProcess;
+    }
+    catch (std::exception& e)
+    {
+        std::wstring errorMessage = std::wstring{ winrt::to_hstring(e.what()) };
+        Logger::error(L"Failed to start BgcodePreviewHandler.exe. Error: {}", errorMessage);
+    }
+
+    return S_OK;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::Unload()
+{
+    Logger::info(L"Unload and terminate .exe");
+
+    m_hwndParent = NULL;
+    TerminateProcess(m_process, 0);
+    return S_OK;
+}
+
+#pragma endregion
+
+#pragma region IPreviewHandlerVisuals
+
+IFACEMETHODIMP BgcodePreviewHandler::SetBackgroundColor(COLORREF color)
+{
+    HBRUSH brush = CreateSolidBrush(WindowsColors::is_dark_mode() ? powerpreviewConstants::DARK_THEME_COLOR : powerpreviewConstants::LIGHT_THEME_COLOR);
+    SetClassLongPtr(m_hwndParent, GCLP_HBRBACKGROUND, reinterpret_cast<LONG_PTR>(brush));
+    return S_OK;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::SetFont(const LOGFONTW* plf)
+{
+    return S_OK;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::SetTextColor(COLORREF color)
+{
+    return S_OK;
+}
+
+#pragma endregion
+
+#pragma region IOleWindow
+
+IFACEMETHODIMP BgcodePreviewHandler::GetWindow(HWND* phwnd)
+{
+    HRESULT hr = E_INVALIDARG;
+    if (phwnd)
+    {
+        *phwnd = m_hwndParent;
+        hr = S_OK;
+    }
+    return hr;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::ContextSensitiveHelp(BOOL fEnterMode)
+{
+    return E_NOTIMPL;
+}
+
+#pragma endregion
+
+#pragma region IObjectWithSite
+
+IFACEMETHODIMP BgcodePreviewHandler::SetSite(IUnknown* punkSite)
+{
+    if (m_punkSite)
+    {
+        m_punkSite->Release();
+        m_punkSite = NULL;
+    }
+    return punkSite ? punkSite->QueryInterface(&m_punkSite) : S_OK;
+}
+
+IFACEMETHODIMP BgcodePreviewHandler::GetSite(REFIID riid, void** ppv)
+{
+    *ppv = NULL;
+    return m_punkSite ? m_punkSite->QueryInterface(riid, ppv) : E_FAIL;
+}
+
+#pragma endregion
+
+#pragma region Helper Functions
+
+#pragma endregion

src/modules/previewpane/BgcodePreviewHandlerCpp/BgcodePreviewHandler.h

@@ -0,0 +1,69 @@
+#pragma once
+
+#include "pch.h"
+
+#include <filesystem>
+#include <ShlObj.h>
+#include <string>
+
+class BgcodePreviewHandler :
+    public IInitializeWithFile,
+    public IPreviewHandler,
+    public IPreviewHandlerVisuals,
+    public IOleWindow,
+    public IObjectWithSite
+{
+public:
+    // IUnknown
+    IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv);
+    IFACEMETHODIMP_(ULONG) AddRef();
+    IFACEMETHODIMP_(ULONG) Release();
+
+    // IInitializeWithFile
+    IFACEMETHODIMP Initialize(LPCWSTR pszFilePath, DWORD grfMode);
+
+    // IPreviewHandler
+    IFACEMETHODIMP SetWindow(HWND hwnd, const RECT* prc);
+    IFACEMETHODIMP SetFocus();
+    IFACEMETHODIMP QueryFocus(HWND* phwnd);
+    IFACEMETHODIMP TranslateAccelerator(MSG* pmsg);
+    IFACEMETHODIMP SetRect(const RECT* prc);
+    IFACEMETHODIMP DoPreview();
+    IFACEMETHODIMP Unload();
+
+    // IPreviewHandlerVisuals
+    IFACEMETHODIMP SetBackgroundColor(COLORREF color);
+    IFACEMETHODIMP SetFont(const LOGFONTW* plf);
+    IFACEMETHODIMP SetTextColor(COLORREF color);
+
+    // IOleWindow
+    IFACEMETHODIMP GetWindow(HWND* phwnd);
+    IFACEMETHODIMP ContextSensitiveHelp(BOOL fEnterMode);
+
+    // IObjectWithSite
+    IFACEMETHODIMP SetSite(IUnknown* punkSite);
+    IFACEMETHODIMP GetSite(REFIID riid, void** ppv);
+
+    BgcodePreviewHandler();
+protected:
+    ~BgcodePreviewHandler();
+
+private:
+    // Reference count of component.
+    long m_cRef;
+
+    // Provided during initialization.
+    std::wstring m_filePath;
+    
+    // Parent window that hosts the previewer window.
+    // Note: do NOT DestroyWindow this.
+    HWND m_hwndParent;
+    // Bounding rect of the parent window.
+    RECT m_rcParent;
+
+    // Site pointer from host, used to get IPreviewHandlerFrame.
+    IUnknown* m_punkSite;
+
+    HANDLE m_process;
+    HANDLE m_resizeEvent;
+};

src/modules/previewpane/BgcodePreviewHandlerCpp/BgcodePreviewHandlerCpp.rc

@@ -0,0 +1,40 @@
+#include <windows.h>
+#include "resource.h"
+#include "../../../common/version/version.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+#include "winres.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+1 VERSIONINFO
+FILEVERSION FILE_VERSION
+PRODUCTVERSION PRODUCT_VERSION
+FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+FILEFLAGS VS_FF_DEBUG
+#else
+FILEFLAGS 0x0L
+#endif
+FILEOS VOS_NT_WINDOWS32
+FILETYPE VFT_DLL
+FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0" // US English (0x0409), Unicode (0x04B0) charset
+        BEGIN
+            VALUE "CompanyName", COMPANY_NAME
+            VALUE "FileDescription", FILE_DESCRIPTION
+            VALUE "FileVersion", FILE_VERSION_STRING
+            VALUE "InternalName", INTERNAL_NAME
+            VALUE "LegalCopyright", COPYRIGHT_NOTE
+            VALUE "OriginalFilename", ORIGINAL_FILENAME
+            VALUE "ProductName", PRODUCT_NAME
+            VALUE "ProductVersion", PRODUCT_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200 // US English (0x0409), Unicode (1200) charset
+    END
+END

src/modules/previewpane/BgcodePreviewHandlerCpp/BgcodePreviewHandlerCpp.vcxproj

@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{F6088A11-1C9E-4420-AA90-CF7E78DD7F1C}</ProjectGuid>
+    <RootNamespace>BgcodePreviewHandlerCpp</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <OutDir>..\..\..\..\$(Platform)\$(Configuration)\</OutDir>
+  </PropertyGroup>
+  <PropertyGroup>
+    <TargetName>PowerToys.$(ProjectName)</TargetName>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;MARKDOWNPREVIEWHANDLERCPP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>../../..</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <ModuleDefinitionFile>GlobalExportFunctions.def</ModuleDefinitionFile>
+      <AdditionalDependencies>Shlwapi.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;MARKDOWNPREVIEWHANDLERCPP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>../../..</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <ModuleDefinitionFile>GlobalExportFunctions.def</ModuleDefinitionFile>
+      <AdditionalDependencies>Shlwapi.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="ClassFactory.h" />
+    <ClInclude Include="BgcodePreviewHandler.h" />
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="resource.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="ClassFactory.cpp" />
+    <ClCompile Include="dllmain.cpp" />
+    <ClCompile Include="BgcodePreviewHandler.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(UsePrecompiledHeaders)' != 'false'">Create</PrecompiledHeader>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="GlobalExportFunctions.def" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="BgcodePreviewHandlerCpp.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\common\logger\logger.vcxproj">
+      <Project>{d9b8fc84-322a-4f9f-bbb9-20915c47ddfd}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\common\SettingsAPI\SettingsAPI.vcxproj">
+      <Project>{6955446d-23f7-4023-9bb3-8657f904af99}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\common\Themes\Themes.vcxproj">
+      <Project>{98537082-0fdb-40de-abd8-0dc5a4269bab}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="..\..\..\..\deps\spdlog.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>

src/modules/previewpane/BgcodePreviewHandlerCpp/BgcodePreviewHandlerCpp.vcxproj.filters

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="ClassFactory.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="BgcodePreviewHandler.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="resource.h">
+      <Filter>Resource Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="ClassFactory.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="BgcodePreviewHandler.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="GlobalExportFunctions.def">
+      <Filter>Source Files</Filter>
+    </None>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="BgcodePreviewHandlerCpp.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
+</Project>

src/modules/previewpane/BgcodePreviewHandlerCpp/ClassFactory.cpp

@@ -0,0 +1,84 @@
+#include "pch.h"
+#include "ClassFactory.h"
+#include "BgcodePreviewHandler.h"
+
+#include <new>
+#include <Shlwapi.h>
+
+extern long g_cDllRef;
+
+ClassFactory::ClassFactory() :
+    m_cRef(1)
+{
+    InterlockedIncrement(&g_cDllRef);
+}
+
+ClassFactory::~ClassFactory()
+{
+    InterlockedDecrement(&g_cDllRef);
+}
+
+//
+// IUnknown
+//
+
+IFACEMETHODIMP ClassFactory::QueryInterface(REFIID riid, void **ppv)
+{
+    static const QITAB qit[] = {
+        QITABENT(ClassFactory, IClassFactory),
+        { 0 },
+    };
+    return QISearch(this, qit, riid, ppv);
+}
+
+IFACEMETHODIMP_(ULONG) ClassFactory::AddRef()
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+IFACEMETHODIMP_(ULONG) ClassFactory::Release()
+{
+    ULONG cRef = InterlockedDecrement(&m_cRef);
+    if (0 == cRef)
+    {
+        delete this;
+    }
+    return cRef;
+}
+
+//
+// IClassFactory
+//
+
+IFACEMETHODIMP ClassFactory::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppv)
+{
+    HRESULT hr = CLASS_E_NOAGGREGATION;
+
+    if (pUnkOuter == NULL)
+    {
+        hr = E_OUTOFMEMORY;
+
+        BgcodePreviewHandler* pExt = new (std::nothrow) BgcodePreviewHandler();
+        if (pExt)
+        {
+            hr = pExt->QueryInterface(riid, ppv);
+            pExt->Release();
+        }
+    }
+
+    return hr;
+}
+
+IFACEMETHODIMP ClassFactory::LockServer(BOOL fLock)
+{
+    if (fLock)
+    {
+        InterlockedIncrement(&g_cDllRef);
+    }
+    else
+    {
+        InterlockedDecrement(&g_cDllRef);
+    }
+
+    return S_OK;
+}

src/modules/previewpane/BgcodePreviewHandlerCpp/ClassFactory.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <Unknwn.h>
+
+class ClassFactory : public IClassFactory
+{
+public:
+    // IUnknown
+    IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv);
+    IFACEMETHODIMP_(ULONG) AddRef();
+    IFACEMETHODIMP_(ULONG) Release();
+
+    // IClassFactory
+    IFACEMETHODIMP CreateInstance(IUnknown* pUnkOuter, REFIID riid, void** ppv);
+    IFACEMETHODIMP LockServer(BOOL fLock);
+
+    ClassFactory();
+
+protected:
+    ~ClassFactory();
+
+private:
+    long m_cRef;
+};

src/modules/previewpane/BgcodePreviewHandlerCpp/GlobalExportFunctions.def

@@ -0,0 +1,3 @@
+EXPORTS
+    DllGetClassObject   PRIVATE
+    DllCanUnloadNow     PRIVATE

src/modules/previewpane/BgcodePreviewHandlerCpp/dllmain.cpp

@@ -0,0 +1,73 @@
+// dllmain.cpp : Defines the entry point for the DLL application.
+#include "pch.h"
+#include "ClassFactory.h"
+
+HINSTANCE g_hInst = NULL;
+long g_cDllRef = 0;
+
+// {0e6d5bdd-d5f8-4692-a089-8bb88cdd37f4}
+static const GUID CLSID_BgcodePreviewHandler = { 0x0e6d5bdd, 0xd5f8, 0x4692, { 0xa0, 0x89, 0x8b, 0xb8, 0x8c, 0xdd, 0x37, 0xf4 } };
+
+BOOL APIENTRY DllMain(HMODULE hModule,
+                      DWORD ul_reason_for_call,
+                      LPVOID lpReserved)
+{
+    switch (ul_reason_for_call)
+    {
+    case DLL_PROCESS_ATTACH:
+        g_hInst = hModule;
+        DisableThreadLibraryCalls(hModule);
+        break;
+    case DLL_THREAD_ATTACH:
+    case DLL_THREAD_DETACH:
+    case DLL_PROCESS_DETACH:
+        break;
+    }
+    return TRUE;
+}
+
+//
+//   FUNCTION: DllGetClassObject
+//
+//   PURPOSE: Create the class factory and query to the specific interface.
+//
+//   PARAMETERS:
+//   * rclsid - The CLSID that will associate the correct data and code.
+//   * riid - A reference to the identifier of the interface that the caller
+//     is to use to communicate with the class object.
+//   * ppv - The address of a pointer variable that receives the interface
+//     pointer requested in riid. Upon successful return, *ppv contains the
+//     requested interface pointer. If an error occurs, the interface pointer
+//     is NULL.
+//
+STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void** ppv)
+{
+    HRESULT hr = CLASS_E_CLASSNOTAVAILABLE;
+
+    if (IsEqualCLSID(CLSID_BgcodePreviewHandler, rclsid))
+    {
+        hr = E_OUTOFMEMORY;
+
+        ClassFactory* pClassFactory = new ClassFactory();
+        if (pClassFactory)
+        {
+            hr = pClassFactory->QueryInterface(riid, ppv);
+            pClassFactory->Release();
+        }
+    }
+
+    return hr;
+}
+
+//
+//   FUNCTION: DllCanUnloadNow
+//
+//   PURPOSE: Check if we can unload the component from the memory.
+//
+//   NOTE: The component can be unloaded from the memory when its reference
+//   count is zero (i.e. nobody is still using the component).
+//
+STDAPI DllCanUnloadNow(void)
+{
+    return g_cDllRef > 0 ? S_FALSE : S_OK;
+}

src/modules/previewpane/BgcodePreviewHandlerCpp/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.240111.5" targetFramework="native" />
+</packages>

src/modules/previewpane/BgcodePreviewHandlerCpp/pch.cpp

@@ -0,0 +1,5 @@
+// pch.cpp: source file corresponding to the pre-compiled header
+
+#include "pch.h"
+
+// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.

src/modules/previewpane/BgcodePreviewHandlerCpp/pch.h

@@ -0,0 +1,14 @@
+// pch.h: This is a precompiled header file.
+// Files listed below are compiled only once, improving build performance for future builds.
+// This also affects IntelliSense performance, including code completion and many code browsing features.
+// However, files listed here are ALL re-compiled if any one of them is updated between builds.
+// Do not add files here that you will be updating frequently as this negates the performance advantage.
+
+#ifndef PCH_H
+#define PCH_H
+
+#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
+// Windows Header Files
+#include <windows.h>
+
+#endif //PCH_H

src/modules/previewpane/BgcodePreviewHandlerCpp/resource.h

@@ -0,0 +1,13 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by AlwaysOnTopModuleInterface.rc
+
+//////////////////////////////
+// Non-localizable
+
+#define FILE_DESCRIPTION "PowerToys Bgcode Preview Handler Module"
+#define INTERNAL_NAME "PowerToys.BgcodePreviewHandlerCpp"
+#define ORIGINAL_FILENAME "PowerToys.BgcodePreviewHandlerCpp.dll"
+
+// Non-localizable
+//////////////////////////////

src/modules/previewpane/BgcodeThumbnailProvider/BgcodeThumbnailProvider.cs

@@ -0,0 +1,146 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
+
+using Microsoft.PowerToys.FilePreviewCommon;
+
+namespace Microsoft.PowerToys.ThumbnailHandler.Bgcode
+{
+    /// <summary>
+    /// Binary G-code Thumbnail Provider.
+    /// </summary>
+    public class BgcodeThumbnailProvider
+    {
+        public BgcodeThumbnailProvider(string filePath)
+        {
+            FilePath = filePath;
+            Stream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+        }
+
+        /// <summary>
+        /// Gets the file path to the file creating thumbnail for.
+        /// </summary>
+        public string FilePath { get; private set; }
+
+        /// <summary>
+        /// Gets the stream object to access file.
+        /// </summary>
+        public Stream Stream { get; private set; }
+
+        /// <summary>
+        ///  The maximum dimension (width or height) thumbnail we will generate.
+        /// </summary>
+        private const uint MaxThumbnailSize = 10000;
+
+        /// <summary>
+        /// Reads the Binary G-code content searching for thumbnails and returns the largest.
+        /// </summary>
+        /// <param name="reader">The BinaryReader instance for the Binary G-code content.</param>
+        /// <param name="cx">The maximum thumbnail size, in pixels.</param>
+        /// <returns>A thumbnail extracted from the Binary G-code content.</returns>
+        public static Bitmap GetThumbnail(BinaryReader reader, uint cx)
+        {
+            if (cx > MaxThumbnailSize || reader == null || reader.BaseStream.Length == 0)
+            {
+                return null;
+            }
+
+            Bitmap thumbnail = null;
+
+            try
+            {
+                var bgcodeThumbnail = BgcodeHelper.GetBestThumbnail(reader);
+
+                thumbnail = bgcodeThumbnail?.GetBitmap();
+            }
+            catch (Exception)
+            {
+                // TODO: add logger
+            }
+
+            if (thumbnail != null && (
+                ((thumbnail.Width != cx || thumbnail.Height > cx) && (thumbnail.Height != cx || thumbnail.Width > cx)) ||
+                thumbnail.PixelFormat != PixelFormat.Format32bppArgb))
+            {
+                // We are not the appropriate size for caller.  Resize now while
+                // respecting the aspect ratio.
+                float scale = Math.Min((float)cx / thumbnail.Width, (float)cx / thumbnail.Height);
+                int scaleWidth = (int)(thumbnail.Width * scale);
+                int scaleHeight = (int)(thumbnail.Height * scale);
+                thumbnail = ResizeImage(thumbnail, scaleWidth, scaleHeight);
+            }
+
+            return thumbnail;
+        }
+
+        /// <summary>
+        /// Resize the image with high quality to the specified width and height.
+        /// </summary>
+        /// <param name="image">The image to resize.</param>
+        /// <param name="width">The width to resize to.</param>
+        /// <param name="height">The height to resize to.</param>
+        /// <returns>The resized image.</returns>
+        public static Bitmap ResizeImage(Image image, int width, int height)
+        {
+            if (width <= 0 ||
+                height <= 0 ||
+                width > MaxThumbnailSize ||
+                height > MaxThumbnailSize ||
+                image == null)
+            {
+                return null;
+            }
+
+            Bitmap destImage = new Bitmap(width, height, PixelFormat.Format32bppArgb);
+
+            destImage.SetResolution(image.HorizontalResolution, image.VerticalResolution);
+
+            using (var graphics = Graphics.FromImage(destImage))
+            {
+                graphics.CompositingMode = CompositingMode.SourceCopy;
+                graphics.CompositingQuality = CompositingQuality.HighQuality;
+                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
+                graphics.SmoothingMode = SmoothingMode.HighQuality;
+                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
+
+                graphics.DrawImage(image, 0, 0, width, height);
+            }
+
+            image.Dispose();
+
+            return destImage;
+        }
+
+        /// <summary>
+        /// Generate thumbnail bitmap for provided Bgcode file/stream.
+        /// </summary>
+        /// <param name="cx">Maximum thumbnail size, in pixels.</param>
+        /// <returns>Generated bitmap</returns>
+        public Bitmap GetThumbnail(uint cx)
+        {
+            if (cx == 0 || cx > MaxThumbnailSize)
+            {
+                return null;
+            }
+
+            if (global::PowerToys.GPOWrapper.GPOWrapper.GetConfiguredBgcodeThumbnailsEnabledValue() == global::PowerToys.GPOWrapper.GpoRuleConfigured.Disabled)
+            {
+                // GPO is disabling this utility.
+                return null;
+            }
+
+            using (var reader = new BinaryReader(this.Stream))
+            {
+                Bitmap thumbnail = GetThumbnail(reader, cx);
+                if (thumbnail != null && thumbnail.Size.Width > 0 && thumbnail.Size.Height > 0)
+                {
+                    return thumbnail;
+                }
+            }
+
+            return null;
+        }
+    }
+}

src/modules/previewpane/BgcodeThumbnailProvider/BgcodeThumbnailProvider.csproj

@@ -0,0 +1,43 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+  <Import Project="..\..\..\Common.SelfContained.props" />
+
+  <PropertyGroup>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ProjectGuid>{9BC1C986-1E97-4D07-A7B1-CE226C239EFA}</ProjectGuid>
+    <RootNamespace>Microsoft.PowerToys.ThumbnailHandler.Bgcode</RootNamespace>
+    <AssemblyName>PowerToys.BgcodeThumbnailProvider</AssemblyName>
+    <AssemblyTitle>PowerToys.BgcodeThumbnailProvider</AssemblyTitle>
+    <AssemblyDescription>PowerToys BgcodePreviewHandler</AssemblyDescription>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Description>PowerToys BgcodePreviewHandler</Description>
+    <OutputPath>..\..\..\..\$(Platform)\$(Configuration)</OutputPath>
+    <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+  </PropertyGroup>
+
+  <!-- See https://learn.microsoft.com/windows/apps/develop/platform/csharp-winrt/net-projection-from-cppwinrt-component for more info -->
+  <PropertyGroup>
+    <CsWinRTIncludes>PowerToys.GPOWrapper</CsWinRTIncludes>
+    <CsWinRTGeneratedFilesDir>$(OutDir)</CsWinRTGeneratedFilesDir>
+    <ErrorOnDuplicatePublishOutputFiles>false</ErrorOnDuplicatePublishOutputFiles>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <!-- Disable missing comment warning. WinRT/C++ libraries added won't have comments on their reflections. -->
+    <NoWarn>$(NoWarn);1591</NoWarn>
+    <OutputType>WinExe</OutputType>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\common\FilePreviewCommon\FilePreviewCommon.csproj" />
+    <ProjectReference Include="..\..\..\common\GPOWrapper\GPOWrapper.vcxproj" />
+    <ProjectReference Include="..\..\..\common\ManagedTelemetry\Telemetry\ManagedTelemetry.csproj" />
+    <ProjectReference Include="..\Common\PreviewHandlerCommon.csproj" />
+    <ProjectReference Include="..\..\..\common\Common.UI\Common.UI.csproj" />
+  </ItemGroup>
+
+</Project>

src/modules/previewpane/BgcodeThumbnailProvider/Program.cs

@@ -0,0 +1,42 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Globalization;
+
+namespace Microsoft.PowerToys.ThumbnailHandler.Bgcode
+{
+    internal static class Program
+    {
+        private static BgcodeThumbnailProvider _thumbnailProvider;
+
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        public static void Main(string[] args)
+        {
+            ApplicationConfiguration.Initialize();
+            if (args != null)
+            {
+                if (args.Length == 2)
+                {
+                    string filePath = args[0];
+                    uint cx = Convert.ToUInt32(args[1], 10);
+
+                    _thumbnailProvider = new BgcodeThumbnailProvider(filePath);
+                    Bitmap thumbnail = _thumbnailProvider.GetThumbnail(cx);
+                    if (thumbnail != null)
+                    {
+                        filePath = filePath.Replace(".bgcode", ".bmp");
+                        thumbnail.Save(filePath, System.Drawing.Imaging.ImageFormat.Bmp);
+                    }
+                }
+                else
+                {
+                    MessageBox.Show("Bgcode thumbnail - wrong number of args: " + args.Length.ToString(CultureInfo.InvariantCulture));
+                }
+            }
+        }
+    }
+}

src/modules/previewpane/BgcodeThumbnailProviderCpp/BgcodeThumbnailProvider.cpp

@@ -0,0 +1,201 @@
+#include "pch.h"
+#include "BgcodeThumbnailProvider.h"
+
+#include <filesystem>
+#include <fstream>
+#include <shellapi.h>
+#include <Shlwapi.h>
+#include <string>
+
+#include <wil/com.h>
+
+#include <common/utils/process_path.h>
+#include <common/interop/shared_constants.h>
+#include <common/logger/logger.h>
+#include <common/SettingsAPI/settings_helpers.h>
+#include <common/utils/process_path.h>
+
+extern HINSTANCE g_hInst;
+extern long g_cDllRef;
+
+BgcodeThumbnailProvider::BgcodeThumbnailProvider() :
+    m_cRef(1), m_pStream(NULL), m_process(NULL)
+{
+    std::filesystem::path logFilePath(PTSettingsHelper::get_local_low_folder_location());
+    logFilePath.append(LogSettings::bgcodeThumbLogPath);
+    Logger::init(LogSettings::bgcodeThumbLoggerName, logFilePath.wstring(), PTSettingsHelper::get_log_settings_file_location());
+
+    InterlockedIncrement(&g_cDllRef);
+}
+
+BgcodeThumbnailProvider::~BgcodeThumbnailProvider()
+{
+    InterlockedDecrement(&g_cDllRef);
+}
+
+#pragma region IUnknown
+
+IFACEMETHODIMP BgcodeThumbnailProvider::QueryInterface(REFIID riid, void** ppv)
+{
+    static const QITAB qit[] = {
+        QITABENT(BgcodeThumbnailProvider, IThumbnailProvider),
+        QITABENT(BgcodeThumbnailProvider, IInitializeWithStream),
+        { 0 },
+    };
+    return QISearch(this, qit, riid, ppv);
+}
+
+IFACEMETHODIMP_(ULONG)
+BgcodeThumbnailProvider::AddRef()
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+IFACEMETHODIMP_(ULONG)
+BgcodeThumbnailProvider::Release()
+{
+    ULONG cRef = InterlockedDecrement(&m_cRef);
+    if (0 == cRef)
+    {
+        delete this;
+    }
+    return cRef;
+}
+
+#pragma endregion
+
+#pragma region IInitializationWithStream
+
+IFACEMETHODIMP BgcodeThumbnailProvider::Initialize(IStream* pStream, DWORD grfMode)
+{
+    HRESULT hr = E_INVALIDARG;
+    if (pStream)
+    {
+        // Initialize can be called more than once, so release existing valid
+        // m_pStream.
+        if (m_pStream)
+        {
+            m_pStream->Release();
+            m_pStream = NULL;
+        }
+
+        m_pStream = pStream;
+        m_pStream->AddRef();
+        hr = S_OK;
+    }
+    return hr;
+}
+
+#pragma endregion
+
+#pragma region IThumbnailProvider
+
+IFACEMETHODIMP BgcodeThumbnailProvider::GetThumbnail(UINT cx, HBITMAP* phbmp, WTS_ALPHATYPE* pdwAlpha)
+{
+    // Read stream into the buffer
+    char buffer[4096];
+    ULONG cbRead;
+
+    Logger::trace(L"Begin");
+
+    GUID guid;
+    if (CoCreateGuid(&guid) == S_OK)
+    {
+        wil::unique_cotaskmem_string guidString;
+        if (SUCCEEDED(StringFromCLSID(guid, &guidString)))
+        {
+            Logger::info(L"Read stream and save to tmp file.");
+
+            // {CLSID} -> CLSID
+            std::wstring guid = std::wstring(guidString.get()).substr(1, std::wstring(guidString.get()).size() - 2);
+            std::wstring filePath = PTSettingsHelper::get_local_low_folder_location() + L"\\BgcodeThumbnail-Temp\\";
+            if (!std::filesystem::exists(filePath))
+            {
+                std::filesystem::create_directories(filePath);
+            }
+
+            std::wstring fileName = filePath + guid + L".bgcode";
+            
+            // Write data to tmp file
+            std::fstream file;
+            file.open(fileName, std::ios_base::out | std::ios_base::binary);
+
+            if (!file.is_open())
+            {
+                return 0;
+            }
+
+            while (true)
+            {
+                auto result = m_pStream->Read(buffer, 4096, &cbRead);
+
+                file.write(buffer, cbRead);
+                if (result == S_FALSE)
+                {               
+                    break;
+                }
+            }
+            file.close();
+
+            m_pStream->Release();
+            m_pStream = NULL;
+
+            try
+            {
+                Logger::info(L"Start BgcodeThumbnailProvider.exe");
+
+                STARTUPINFO info = { sizeof(info) };
+                std::wstring cmdLine{ L"\"" + fileName + L"\"" };
+                cmdLine += L" ";
+                cmdLine += std::to_wstring(cx);
+
+                std::wstring appPath = get_module_folderpath(g_hInst) + L"\\PowerToys.BgcodeThumbnailProvider.exe";
+
+                SHELLEXECUTEINFO sei{ sizeof(sei) };
+                sei.fMask = { SEE_MASK_NOCLOSEPROCESS | SEE_MASK_FLAG_NO_UI };
+                sei.lpFile = appPath.c_str();
+                sei.lpParameters = cmdLine.c_str();
+                sei.nShow = SW_SHOWDEFAULT;
+                ShellExecuteEx(&sei);
+                m_process = sei.hProcess;
+                WaitForSingleObject(m_process, INFINITE);
+                std::filesystem::remove(fileName);
+
+
+                std::wstring fileNameBmp = filePath + guid + L".bmp";
+                if (std::filesystem::exists(fileNameBmp))
+                {
+                    *phbmp = static_cast<HBITMAP>(LoadImage(NULL, fileNameBmp.c_str(), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE));
+                    *pdwAlpha = WTS_ALPHATYPE::WTSAT_ARGB;
+                    std::filesystem::remove(fileNameBmp);
+                }
+                else
+                {
+                    Logger::info(L"Bmp file not generated.");
+                    return E_FAIL;
+                }
+            }
+            catch (std::exception& e)
+            {
+                std::wstring errorMessage = std::wstring{ winrt::to_hstring(e.what()) };
+                Logger::error(L"Failed to start BgcodeThumbnailProvider.exe. Error: {}", errorMessage);
+            }
+        }
+    }
+
+    // ensure releasing the stream (not all if branches contain it)
+    if (m_pStream)
+    {
+        m_pStream->Release();
+        m_pStream = NULL;
+    }
+
+    return S_OK;
+}
+
+
+#pragma endregion
+
+#pragma region Helper Functions
+
+#pragma endregion

src/modules/previewpane/BgcodeThumbnailProviderCpp/BgcodeThumbnailProvider.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "pch.h"
+
+#include <ShlObj.h>
+#include <string>
+#include <thumbcache.h>
+
+class BgcodeThumbnailProvider :
+    public IInitializeWithStream,
+    public IThumbnailProvider
+{
+public:
+    // IUnknown
+    IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv);
+    IFACEMETHODIMP_(ULONG) AddRef();
+    IFACEMETHODIMP_(ULONG) Release();
+
+    // IInitializeWithStream
+    IFACEMETHODIMP Initialize(IStream* pstream, DWORD grfMode);
+
+    // IThumbnailProvider
+    IFACEMETHODIMP GetThumbnail(UINT cx, HBITMAP* phbmp, WTS_ALPHATYPE* pdwAlpha);
+
+    BgcodeThumbnailProvider();
+protected:
+    ~BgcodeThumbnailProvider();
+
+private:
+    // Reference count of component.
+    long m_cRef;
+
+    // Provided during initialization.
+    IStream* m_pStream;
+
+    HANDLE m_process;
+};

src/modules/previewpane/BgcodeThumbnailProviderCpp/BgcodeThumbnailProviderCpp.rc

@@ -0,0 +1,40 @@
+#include <windows.h>
+#include "resource.h"
+#include "../../../common/version/version.h"
+
+#define APSTUDIO_READONLY_SYMBOLS
+#include "winres.h"
+#undef APSTUDIO_READONLY_SYMBOLS
+
+1 VERSIONINFO
+FILEVERSION FILE_VERSION
+PRODUCTVERSION PRODUCT_VERSION
+FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+FILEFLAGS VS_FF_DEBUG
+#else
+FILEFLAGS 0x0L
+#endif
+FILEOS VOS_NT_WINDOWS32
+FILETYPE VFT_DLL
+FILESUBTYPE VFT2_UNKNOWN
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0" // US English (0x0409), Unicode (0x04B0) charset
+        BEGIN
+            VALUE "CompanyName", COMPANY_NAME
+            VALUE "FileDescription", FILE_DESCRIPTION
+            VALUE "FileVersion", FILE_VERSION_STRING
+            VALUE "InternalName", INTERNAL_NAME
+            VALUE "LegalCopyright", COPYRIGHT_NOTE
+            VALUE "OriginalFilename", ORIGINAL_FILENAME
+            VALUE "ProductName", PRODUCT_NAME
+            VALUE "ProductVersion", PRODUCT_VERSION_STRING
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200 // US English (0x0409), Unicode (1200) charset
+    END
+END

src/modules/previewpane/BgcodeThumbnailProviderCpp/BgcodeThumbnailProviderCpp.vcxproj

@@ -0,0 +1,118 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>16.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{47B0678C-806B-4FE1-9F50-46BA88989532}</ProjectGuid>
+    <RootNamespace>BgcodeThumbnailProviderCpp</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <OutDir>..\..\..\..\$(Platform)\$(Configuration)\</OutDir>
+  </PropertyGroup>
+  <PropertyGroup>
+    <TargetName>PowerToys.$(ProjectName)</TargetName>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;MARKDOWNPREVIEWHANDLERCPP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>../../..</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <ModuleDefinitionFile>GlobalExportFunctions.def</ModuleDefinitionFile>
+      <AdditionalDependencies>Shlwapi.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;MARKDOWNPREVIEWHANDLERCPP_EXPORTS;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalIncludeDirectories>../../..</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableUAC>false</EnableUAC>
+      <ModuleDefinitionFile>GlobalExportFunctions.def</ModuleDefinitionFile>
+      <AdditionalDependencies>Shlwapi.lib;$(CoreLibraryDependencies);%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="ClassFactory.h" />
+    <ClInclude Include="BgcodeThumbnailProvider.h" />
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="resource.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="ClassFactory.cpp" />
+    <ClCompile Include="dllmain.cpp" />
+    <ClCompile Include="BgcodeThumbnailProvider.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(UsePrecompiledHeaders)' != 'false'">Create</PrecompiledHeader>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="GlobalExportFunctions.def" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\common\logger\logger.vcxproj">
+      <Project>{d9b8fc84-322a-4f9f-bbb9-20915c47ddfd}</Project>
+    </ProjectReference>
+    <ProjectReference Include="..\..\..\common\SettingsAPI\SettingsAPI.vcxproj">
+      <Project>{6955446d-23f7-4023-9bb3-8657f904af99}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="BgcodeThumbnailProviderCpp.rc" />
+  </ItemGroup>
+  <Import Project="..\..\..\..\deps\spdlog.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" />
+    <Import Project="..\..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('..\..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\..\packages\Microsoft.Windows.CppWinRT.2.0.240111.5\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+    <Error Condition="!Exists('..\..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.231216.1\build\native\Microsoft.Windows.ImplementationLibrary.targets'))" />
+  </Target>
+</Project>

src/modules/previewpane/BgcodeThumbnailProviderCpp/BgcodeThumbnailProviderCpp.vcxproj.filters

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="ClassFactory.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="BgcodeThumbnailProvider.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="resource.h">
+      <Filter>Resource Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="dllmain.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="ClassFactory.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="BgcodeThumbnailProvider.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="GlobalExportFunctions.def">
+      <Filter>Source Files</Filter>
+    </None>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Natvis Include="$(MSBuildThisFileDirectory)..\..\natvis\wil.natvis" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="BgcodeThumbnailProviderCpp.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
+</Project>

src/modules/previewpane/BgcodeThumbnailProviderCpp/ClassFactory.cpp

@@ -0,0 +1,84 @@
+#include "pch.h"
+#include "ClassFactory.h"
+#include "BgcodeThumbnailProvider.h"
+
+#include <new>
+#include <Shlwapi.h>
+
+extern long g_cDllRef;
+
+ClassFactory::ClassFactory() :
+    m_cRef(1)
+{
+    InterlockedIncrement(&g_cDllRef);
+}
+
+ClassFactory::~ClassFactory()
+{
+    InterlockedDecrement(&g_cDllRef);
+}
+
+//
+// IUnknown
+//
+
+IFACEMETHODIMP ClassFactory::QueryInterface(REFIID riid, void **ppv)
+{
+    static const QITAB qit[] = {
+        QITABENT(ClassFactory, IClassFactory),
+        { 0 },
+    };
+    return QISearch(this, qit, riid, ppv);
+}
+
+IFACEMETHODIMP_(ULONG) ClassFactory::AddRef()
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+IFACEMETHODIMP_(ULONG) ClassFactory::Release()
+{
+    ULONG cRef = InterlockedDecrement(&m_cRef);
+    if (0 == cRef)
+    {
+        delete this;
+    }
+    return cRef;
+}
+
+//
+// IClassFactory
+//
+
+IFACEMETHODIMP ClassFactory::CreateInstance(IUnknown *pUnkOuter, REFIID riid, void **ppv)
+{
+    HRESULT hr = CLASS_E_NOAGGREGATION;
+
+    if (pUnkOuter == NULL)
+    {
+        hr = E_OUTOFMEMORY;
+
+        BgcodeThumbnailProvider* pExt = new (std::nothrow) BgcodeThumbnailProvider();
+        if (pExt)
+        {
+            hr = pExt->QueryInterface(riid, ppv);
+            pExt->Release();
+        }
+    }
+
+    return hr;
+}
+
+IFACEMETHODIMP ClassFactory::LockServer(BOOL fLock)
+{
+    if (fLock)
+    {
+        InterlockedIncrement(&g_cDllRef);
+    }
+    else
+    {
+        InterlockedDecrement(&g_cDllRef);
+    }
+
+    return S_OK;
+}

src/modules/previewpane/BgcodeThumbnailProviderCpp/ClassFactory.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <Unknwn.h>
+
+class ClassFactory : public IClassFactory
+{
+public:
+    // IUnknown
+    IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv);
+    IFACEMETHODIMP_(ULONG) AddRef();
+    IFACEMETHODIMP_(ULONG) Release();
+
+    // IClassFactory
+    IFACEMETHODIMP CreateInstance(IUnknown* pUnkOuter, REFIID riid, void** ppv);
+    IFACEMETHODIMP LockServer(BOOL fLock);
+
+    ClassFactory();
+
+protected:
+    ~ClassFactory();
+
+private:
+    long m_cRef;
+};

src/modules/previewpane/BgcodeThumbnailProviderCpp/GlobalExportFunctions.def

@@ -0,0 +1,3 @@
+EXPORTS
+    DllGetClassObject   PRIVATE
+    DllCanUnloadNow     PRIVATE

src/modules/previewpane/BgcodeThumbnailProviderCpp/dllmain.cpp

@@ -0,0 +1,73 @@
+// dllmain.cpp : Defines the entry point for the DLL application.
+#include "pch.h"
+#include "ClassFactory.h"
+
+HINSTANCE g_hInst = NULL;
+long g_cDllRef = 0;
+
+// {5c93a1e4-99d0-4fb3-991c-6c296a27be21}
+static const GUID CLSID_BgcodeThumbnailProvider = { 0x5c93a1e4, 0x99d0, 0x4fb3, { 0x99, 0x1c, 0x6c, 0x29, 0x6a, 0x27, 0xbe, 0x21 } };
+
+BOOL APIENTRY DllMain(HMODULE hModule,
+                      DWORD ul_reason_for_call,
+                      LPVOID lpReserved)
+{
+    switch (ul_reason_for_call)
+    {
+    case DLL_PROCESS_ATTACH:
+        g_hInst = hModule;
+        DisableThreadLibraryCalls(hModule);
+        break;
+    case DLL_THREAD_ATTACH:
+    case DLL_THREAD_DETACH:
+    case DLL_PROCESS_DETACH:
+        break;
+    }
+    return TRUE;
+}
+
+//
+//   FUNCTION: DllGetClassObject
+//
+//   PURPOSE: Create the class factory and query to the specific interface.
+//
+//   PARAMETERS:
+//   * rclsid - The CLSID that will associate the correct data and code.
+//   * riid - A reference to the identifier of the interface that the caller
+//     is to use to communicate with the class object.
+//   * ppv - The address of a pointer variable that receives the interface
+//     pointer requested in riid. Upon successful return, *ppv contains the
+//     requested interface pointer. If an error occurs, the interface pointer
+//     is NULL.
+//
+STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void** ppv)
+{
+    HRESULT hr = CLASS_E_CLASSNOTAVAILABLE;
+
+    if (IsEqualCLSID(CLSID_BgcodeThumbnailProvider, rclsid))
+    {
+        hr = E_OUTOFMEMORY;
+
+        ClassFactory* pClassFactory = new ClassFactory();
+        if (pClassFactory)
+        {
+            hr = pClassFactory->QueryInterface(riid, ppv);
+            pClassFactory->Release();
+        }
+    }
+
+    return hr;
+}
+
+//
+//   FUNCTION: DllCanUnloadNow
+//
+//   PURPOSE: Check if we can unload the component from the memory.
+//
+//   NOTE: The component can be unloaded from the memory when its reference
+//   count is zero (i.e. nobody is still using the component).
+//
+STDAPI DllCanUnloadNow(void)
+{
+    return g_cDllRef > 0 ? S_FALSE : S_OK;
+}

src/modules/previewpane/BgcodeThumbnailProviderCpp/packages.config

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.240111.5" targetFramework="native" />
+  <package id="Microsoft.Windows.ImplementationLibrary" version="1.0.231216.1" targetFramework="native" />
+</packages>

src/modules/previewpane/BgcodeThumbnailProviderCpp/pch.cpp

@@ -0,0 +1,5 @@
+// pch.cpp: source file corresponding to the pre-compiled header
+
+#include "pch.h"
+
+// When you are using pre-compiled headers, this source file is necessary for compilation to succeed.

src/modules/previewpane/BgcodeThumbnailProviderCpp/pch.h

@@ -0,0 +1,15 @@
+// pch.h: This is a precompiled header file.
+// Files listed below are compiled only once, improving build performance for future builds.
+// This also affects IntelliSense performance, including code completion and many code browsing features.
+// However, files listed here are ALL re-compiled if any one of them is updated between builds.
+// Do not add files here that you will be updating frequently as this negates the performance advantage.
+
+#ifndef PCH_H
+#define PCH_H
+
+#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
+// Windows Header Files
+#include <windows.h>
+#include <winrt/base.h>
+
+#endif //PCH_H

src/modules/previewpane/BgcodeThumbnailProviderCpp/resource.h

@@ -0,0 +1,13 @@
+//{{NO_DEPENDENCIES}}
+// Microsoft Visual C++ generated include file.
+// Used by AlwaysOnTopModuleInterface.rc
+
+//////////////////////////////
+// Non-localizable
+
+#define FILE_DESCRIPTION "PowerToys Bgcode Thumbnail Provider Module"
+#define INTERNAL_NAME "PowerToys.BgcodeThumbnailProviderCpp"
+#define ORIGINAL_FILENAME "PowerToys.BgcodeThumbnailProviderCpp.dll"
+
+// Non-localizable
+//////////////////////////////

src/modules/previewpane/UnitTests-BgcodePreviewHandler/BgcodePreviewHandlerTest.cs

@@ -0,0 +1,93 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Drawing;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Runtime.InteropServices.ComTypes;
+using System.Windows.Forms;
+
+using Microsoft.PowerToys.PreviewHandler.Bgcode;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+
+namespace BgcodePreviewHandlerUnitTests
+{
+    [STATestClass]
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Usage", "CA2201:Do not raise reserved exception types", Justification = "new Exception() is fine in test projects.")]
+    public class BgcodePreviewHandlerTest
+    {
+        [DataTestMethod]
+        [DataRow("HelperFiles/sample.bgcode")]
+        public void BgcodePreviewHandlerControlAddsControlsToFormWhenDoPreviewIsCalled(string filePath)
+        {
+            // Arrange
+            using (var bgcodePreviewHandlerControl = new BgcodePreviewHandlerControl())
+            {
+                // Act
+                var file = File.ReadAllBytes(filePath);
+
+                bgcodePreviewHandlerControl.DoPreview<IStream>(GetMockStream(file));
+
+                var flowLayoutPanel = bgcodePreviewHandlerControl.Controls[0] as FlowLayoutPanel;
+
+                // Assert
+                Assert.AreEqual(1, bgcodePreviewHandlerControl.Controls.Count);
+            }
+        }
+
+        [TestMethod]
+        public void BgcodePreviewHandlerControlShouldAddValidInfoBarIfBgcodePreviewThrows()
+        {
+            // Arrange
+            using (var bgcodePreviewHandlerControl = new BgcodePreviewHandlerControl())
+            {
+                var mockStream = new Mock<IStream>();
+                mockStream
+                    .Setup(x => x.Read(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<IntPtr>()))
+                    .Throws(new Exception());
+
+                // Act
+                bgcodePreviewHandlerControl.DoPreview(mockStream.Object);
+                var textBox = bgcodePreviewHandlerControl.Controls[0] as RichTextBox;
+
+                // Assert
+                Assert.IsFalse(string.IsNullOrWhiteSpace(textBox.Text));
+                Assert.AreEqual(1, bgcodePreviewHandlerControl.Controls.Count);
+                Assert.AreEqual(DockStyle.Top, textBox.Dock);
+                Assert.AreEqual(Color.LightYellow, textBox.BackColor);
+                Assert.IsTrue(textBox.Multiline);
+                Assert.IsTrue(textBox.ReadOnly);
+                Assert.AreEqual(RichTextBoxScrollBars.None, textBox.ScrollBars);
+                Assert.AreEqual(BorderStyle.None, textBox.BorderStyle);
+            }
+        }
+
+        private static IStream GetMockStream(byte[] sourceArray)
+        {
+            var streamMock = new Mock<IStream>();
+            int bytesRead = 0;
+
+            streamMock
+                .Setup(x => x.Read(It.IsAny<byte[]>(), It.IsAny<int>(), It.IsAny<IntPtr>()))
+                .Callback<byte[], int, IntPtr>((buffer, countToRead, bytesReadPtr) =>
+                {
+                    int actualCountToRead = Math.Min(sourceArray.Length - bytesRead, countToRead);
+                    if (actualCountToRead > 0)
+                    {
+                        Array.Copy(sourceArray, bytesRead, buffer, 0, actualCountToRead);
+                        Marshal.WriteInt32(bytesReadPtr, actualCountToRead);
+                        bytesRead += actualCountToRead;
+                    }
+                    else
+                    {
+                        Marshal.WriteInt32(bytesReadPtr, 0);
+                    }
+                });
+
+            return streamMock.Object;
+        }
+    }
+}

src/modules/previewpane/UnitTests-BgcodePreviewHandler/UnitTests-BgcodePreviewHandler.csproj

@@ -0,0 +1,36 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+
+  <PropertyGroup>
+    <AssemblyTitle>UnitTests-BgcodePreviewHandler</AssemblyTitle>
+    <AssemblyDescription>PowerToys UnitTests-BgcodePreviewHandler</AssemblyDescription>
+    <Description>PowerToys UnitTests-BgcodePreviewHandler</Description>
+    <ProjectGuid>{99CA1509-FB73-456E-AFAF-AB89C017BD72}</ProjectGuid>
+    <RootNamespace>BgcodePreviewHandlerUnitTests</RootNamespace>
+    <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\$(VisualStudioVersion)\UITestExtensionPackages</ReferencePath>
+    <IsCodedUITest>False</IsCodedUITest>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Remove="HelperFiles\sample.bgcode" />
+    <None Remove="HelperFiles\sample_JPG.bgcode" />
+    <None Remove="HelperFiles\sample_QOI.bgcode" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Moq" />
+    <PackageReference Include="MSTest" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\common\PreviewHandlerCommon.csproj" />
+    <ProjectReference Include="..\BgcodePreviewHandler\BgcodePreviewHandler.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="HelperFiles\sample.bgcode">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+</Project>

src/modules/previewpane/UnitTests-BgcodeThumbnailProvider/BgcodeThumbnailProviderTests.cs

@@ -0,0 +1,71 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Drawing;
+using System.IO;
+
+using Microsoft.PowerToys.ThumbnailHandler.Bgcode;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace BgcodeThumbnailProviderUnitTests
+{
+    [STATestClass]
+    public class BgcodeThumbnailProviderTests
+    {
+        [DataTestMethod]
+        [DataRow("HelperFiles/sample.bgcode")]
+        public void GetThumbnailValidStreamBgcode(string filePath)
+        {
+            // Act
+            BgcodeThumbnailProvider provider = new BgcodeThumbnailProvider(filePath);
+
+            Bitmap bitmap = provider.GetThumbnail(256);
+
+            Assert.IsTrue(bitmap != null);
+        }
+
+        [TestMethod]
+        public void GetThumbnailInValidSizeBgcode()
+        {
+            // Act
+            var filePath = "HelperFiles/sample.bgcode";
+
+            BgcodeThumbnailProvider provider = new BgcodeThumbnailProvider(filePath);
+
+            Bitmap bitmap = provider.GetThumbnail(0);
+
+            Assert.IsTrue(bitmap == null);
+        }
+
+        [TestMethod]
+        public void GetThumbnailToBigBgcode()
+        {
+            // Act
+            var filePath = "HelperFiles/sample.bgcode";
+
+            BgcodeThumbnailProvider provider = new BgcodeThumbnailProvider(filePath);
+
+            Bitmap bitmap = provider.GetThumbnail(10001);
+
+            Assert.IsTrue(bitmap == null);
+        }
+
+        [TestMethod]
+        public void CheckNoBgcodeEmptyDataShouldReturnNullBitmap()
+        {
+            using (var reader = new BinaryReader(new MemoryStream()))
+            {
+                Bitmap thumbnail = BgcodeThumbnailProvider.GetThumbnail(reader, 256);
+                Assert.IsTrue(thumbnail == null);
+            }
+        }
+
+        [TestMethod]
+        public void CheckNoBgcodeNullStringShouldReturnNullBitmap()
+        {
+            Bitmap thumbnail = BgcodeThumbnailProvider.GetThumbnail(null, 256);
+            Assert.IsTrue(thumbnail == null);
+        }
+    }
+}

src/modules/previewpane/UnitTests-BgcodeThumbnailProvider/UnitTests-BgcodeThumbnailProvider.csproj

@@ -0,0 +1,38 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <!-- Look at Directory.Build.props in root for common stuff as well -->
+  <Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+  
+    <PropertyGroup>
+    <AssemblyTitle>UnitTests-BgcodeThumbnailProvider</AssemblyTitle>
+    <AssemblyDescription>PowerToys UnitTests-BgcodeThumbnailProvider</AssemblyDescription>
+    <AssemblyTitle>UnitTests-BgcodeThumbnailProvider</AssemblyTitle>
+    <Description>PowerToys UnitTests-BgcodeThumbnailProvider</Description>
+    <ProjectGuid>{61CBF221-9452-4934-B685-146285E080D7}</ProjectGuid>
+    <RootNamespace>BgcodeThumbnailProviderUnitTests</RootNamespace>
+    <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\$(VisualStudioVersion)\UITestExtensionPackages</ReferencePath>
+    <IsCodedUITest>False</IsCodedUITest>
+    <TestProjectType>UnitTest</TestProjectType>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Remove="HelperFiles\sample.bgcode" />
+    <None Remove="HelperFiles\sample_JPG.bgcode" />
+    <None Remove="HelperFiles\sample_QOI.bgcode" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Moq" />
+    <PackageReference Include="MSTest" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Common\PreviewHandlerCommon.csproj" />
+    <ProjectReference Include="..\BgcodeThumbnailProvider\BgcodeThumbnailProvider.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="HelperFiles\sample.bgcode">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+</Project>

src/modules/previewpane/powerpreview/CLSID.h

@@ -37,6 +37,12 @@ const CLSID CLSID_SHIMActivateGcodePreviewHandler = { 0x516cb24f, 0x562f, 0x422f
 // ec52dea8-7c9f-4130-a77b-1737d0418507
 const CLSID CLSID_GcodePreviewHandler = { 0xec52dea8, 0x7c9f, 0x4130, { 0xa7, 0x7b, 0x17, 0x37, 0xd0, 0x41, 0x85, 0x07 } };
 
+// 8fae8d5d-6bd1-46b4-a74f-cbebba4c7b62
+const CLSID CLSID_SHIMActivateBgcodePreviewHandler = { 0x8fae8d5d, 0x6bd1, 0x46b4, { 0xa7, 0x4f, 0xcb, 0xeb, 0xba, 0x4c, 0x7b, 0x62 } };
+
+// dd8de316-7b01-48e7-ba21-e92c646704af
+const GUID CLSID_BgcodePreviewHandler = { 0xdd8de316, 0x7b01, 0x48e7, { 0xba, 0x21, 0xe9, 0x2c, 0x64, 0x67, 0x04, 0xaf } };
+
 // F498BE36-5C94-4EC9-A65A-AD1CF4C38271
 const GUID CLSID_SHIMActivateQoiPreviewHandler = { 0xf498be36, 0x5c94, 0x4ec9, { 0xa6, 0x5a, 0xad, 0x1c, 0xf4, 0xc3, 0x82, 0x71 } };
 
@@ -46,6 +52,9 @@ const GUID CLSID_QoiPreviewHandler = { 0x8aa07897, 0xc30b, 0x4543, { 0x86, 0x5b,
 // BFEE99B4-B74D-4348-BCA5-E757029647FF
 const GUID CLSID_GcodeThumbnailProvider = { 0xbfee99b4, 0xb74d, 0x4348, { 0xbc, 0xa5, 0xe7, 0x57, 0x02, 0x96, 0x47, 0xff } };
 
+// c28761a0-8420-43ad-bff3-40400543e2d4
+const GUID CLSID_BgcodeThumbnailProvider = {0xc28761a0, 0x8420, 0x43ad, {0xbf, 0xf3, 0x40, 0x40, 0x05, 0x43, 0xe2, 0xd4}};
+
 // 8BC8AFC2-4E7C-4695-818E-8C1FFDCEA2AF
 const GUID CLSID_StlThumbnailProvider = { 0x8bc8afc2, 0x4e7c, 0x4695, { 0x81, 0x8e, 0x8c, 0x1f, 0xfd, 0xce, 0xa2, 0xaf } };
  

src/modules/previewpane/powerpreview/Resources.resx

@@ -143,7 +143,7 @@
   </data>
   <data name="Prevpane_Monaco_Settings_Description" xml:space="preserve">
     <value>Developer files Previewer</value>
-  </data>  
+  </data>
   <data name="Prevpane_Md_Settings_Displayname" xml:space="preserve">
     <value>Markdown Previewer</value>
   </data>
@@ -198,4 +198,13 @@
   <data name="Qoi_Thumbnail_Provider_Settings_Description" xml:space="preserve">
     <value>Qoi Thumbnail Provider</value>
   </data>
+  <data name="Prevpane_Bgcode_Settings_Displayname" xml:space="preserve">
+    <value>Binary G-code Previewer</value>
+  </data>
+  <data name="Prevpane_Bgcode_Settings_Description" xml:space="preserve">
+    <value>Binary G-code Previewer</value>
+  </data>
+  <data name="Bgcode_Thumbnail_Provider_Settings_Description" xml:space="preserve">
+    <value>Binary G-code Thumbnail Provider</value>
+  </data>
 </root>

src/modules/previewpane/powerpreview/powerpreview.cpp

@@ -50,6 +50,11 @@ PowerPreviewModule::PowerPreviewModule() :
                                       .checkModuleGPOEnabledRuleFunction = powertoys_gpo::getConfiguredGcodePreviewEnabledValue,
                                       .registryChanges = getGcodePreviewHandlerChangeSet(installationDir, installPerUser) });
 
+    m_fileExplorerModules.push_back({ .settingName = L"bgcode-previewer-toggle-setting",
+                                      .settingDescription = GET_RESOURCE_STRING(IDS_PREVPANE_BGCODE_SETTINGS_DESCRIPTION),
+                                      .checkModuleGPOEnabledRuleFunction = powertoys_gpo::getConfiguredBgcodePreviewEnabledValue,
+                                      .registryChanges = getBgcodePreviewHandlerChangeSet(installationDir, installPerUser) });
+
     m_fileExplorerModules.push_back({ .settingName = L"svg-thumbnail-toggle-setting",
                                       .settingDescription = GET_RESOURCE_STRING(IDS_SVG_THUMBNAIL_PROVIDER_SETTINGS_DESCRIPTION),
                                       .checkModuleGPOEnabledRuleFunction = powertoys_gpo::getConfiguredSvgThumbnailsEnabledValue,
@@ -65,6 +70,11 @@ PowerPreviewModule::PowerPreviewModule() :
                                       .checkModuleGPOEnabledRuleFunction = powertoys_gpo::getConfiguredGcodeThumbnailsEnabledValue,
                                       .registryChanges = getGcodeThumbnailHandlerChangeSet(installationDir, installPerUser) });
 
+    m_fileExplorerModules.push_back({ .settingName = L"bgcode-thumbnail-toggle-setting",
+                                      .settingDescription = GET_RESOURCE_STRING(IDS_BGCODE_THUMBNAIL_PROVIDER_SETTINGS_DESCRIPTION),
+                                      .checkModuleGPOEnabledRuleFunction = powertoys_gpo::getConfiguredBgcodeThumbnailsEnabledValue,
+                                      .registryChanges = getBgcodeThumbnailHandlerChangeSet(installationDir, installPerUser) });
+
     m_fileExplorerModules.push_back({ .settingName = L"stl-thumbnail-toggle-setting",
                                       .settingDescription = GET_RESOURCE_STRING(IDS_STL_THUMBNAIL_PROVIDER_SETTINGS_DESCRIPTION),
                                       .checkModuleGPOEnabledRuleFunction = powertoys_gpo::getConfiguredStlThumbnailsEnabledValue,

src/modules/previewpane/powerpreview/powerpreview.vcxproj

@@ -86,7 +86,9 @@
     <None Include="powerpreview.def" />
   </ItemGroup>
   <ItemGroup>
-    <None Include="Resources.resx" />
+    <None Include="Resources.resx">
+      <SubType>Designer</SubType>
+    </None>
   </ItemGroup>
   <Import Project="..\..\..\..\deps\spdlog.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />

src/settings-ui/Settings.UI.Library/PowerPreviewProperties.cs

@@ -223,6 +223,23 @@ namespace Microsoft.PowerToys.Settings.UI.Library
             }
         }
 
+        private bool enableBgcodePreview = true;
+
+        [JsonPropertyName("bgcode-previewer-toggle-setting")]
+        [JsonConverter(typeof(BoolPropertyJsonConverter))]
+        public bool EnableBgcodePreview
+        {
+            get => enableBgcodePreview;
+            set
+            {
+                if (value != enableBgcodePreview)
+                {
+                    LogTelemetryEvent(value);
+                    enableBgcodePreview = value;
+                }
+            }
+        }
+
         private bool enableGcodeThumbnail = true;
 
         [JsonPropertyName("gcode-thumbnail-toggle-setting")]
@@ -240,6 +257,23 @@ namespace Microsoft.PowerToys.Settings.UI.Library
             }
         }
 
+        private bool enableBgcodeThumbnail = true;
+
+        [JsonPropertyName("bgcode-thumbnail-toggle-setting")]
+        [JsonConverter(typeof(BoolPropertyJsonConverter))]
+        public bool EnableBgcodeThumbnail
+        {
+            get => enableBgcodeThumbnail;
+            set
+            {
+                if (value != enableBgcodeThumbnail)
+                {
+                    LogTelemetryEvent(value);
+                    enableBgcodeThumbnail = value;
+                }
+            }
+        }
+
         private bool enableStlThumbnail = true;
 
         [JsonPropertyName("stl-thumbnail-toggle-setting")]

src/settings-ui/Settings.UI.UnitTests/ViewModelTests/PowerPreview.cs

@@ -61,11 +61,13 @@ namespace ViewModelTests
             Assert.AreEqual(originalSettings.Properties.EnableMonacoPreview, viewModel.MonacoRenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnablePdfPreview, viewModel.PDFRenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableGcodePreview, viewModel.GCODERenderIsEnabled);
+            Assert.AreEqual(originalSettings.Properties.EnableBgcodePreview, viewModel.BGCODERenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableQoiPreview, viewModel.QOIRenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableSvgPreview, viewModel.SVGRenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableSvgThumbnail, viewModel.SVGThumbnailIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnablePdfThumbnail, viewModel.PDFThumbnailIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableGcodeThumbnail, viewModel.GCODEThumbnailIsEnabled);
+            Assert.AreEqual(originalSettings.Properties.EnableBgcodeThumbnail, viewModel.BGCODEThumbnailIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableStlThumbnail, viewModel.STLThumbnailIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableQoiThumbnail, viewModel.QOIThumbnailIsEnabled);
 
@@ -146,6 +148,24 @@ namespace ViewModelTests
             viewModel.GCODEThumbnailIsEnabled = true;
         }
 
+        [TestMethod]
+        public void BGCODEThumbnailIsEnabledShouldPrevHandlerWhenSuccessful()
+        {
+            // Assert
+            Func<string, int> sendMockIPCConfigMSG = msg =>
+            {
+                SndModuleSettings<SndPowerPreviewSettings> snd = JsonSerializer.Deserialize<SndModuleSettings<SndPowerPreviewSettings>>(msg);
+                Assert.IsTrue(snd.PowertoysSetting.FileExplorerPreviewSettings.Properties.EnableBgcodeThumbnail);
+                return 0;
+            };
+
+            // arrange
+            PowerPreviewViewModel viewModel = new PowerPreviewViewModel(SettingsRepository<PowerPreviewSettings>.GetInstance(mockPowerPreviewSettingsUtils.Object), SettingsRepository<GeneralSettings>.GetInstance(mockGeneralSettingsUtils.Object), sendMockIPCConfigMSG, PowerPreviewSettings.ModuleName);
+
+            // act
+            viewModel.BGCODEThumbnailIsEnabled = true;
+        }
+
         [TestMethod]
         public void STLThumbnailIsEnabledShouldPrevHandlerWhenSuccessful()
         {
@@ -254,6 +274,24 @@ namespace ViewModelTests
             viewModel.GCODERenderIsEnabled = true;
         }
 
+        [TestMethod]
+        public void BGCODERenderIsEnabledShouldPrevHandlerWhenSuccessful()
+        {
+            // Assert
+            Func<string, int> sendMockIPCConfigMSG = msg =>
+            {
+                SndModuleSettings<SndPowerPreviewSettings> snd = JsonSerializer.Deserialize<SndModuleSettings<SndPowerPreviewSettings>>(msg);
+                Assert.IsTrue(snd.PowertoysSetting.FileExplorerPreviewSettings.Properties.EnableBgcodePreview);
+                return 0;
+            };
+
+            // arrange
+            PowerPreviewViewModel viewModel = new PowerPreviewViewModel(SettingsRepository<PowerPreviewSettings>.GetInstance(mockPowerPreviewSettingsUtils.Object), SettingsRepository<GeneralSettings>.GetInstance(mockGeneralSettingsUtils.Object), sendMockIPCConfigMSG, PowerPreviewSettings.ModuleName);
+
+            // act
+            viewModel.BGCODERenderIsEnabled = true;
+        }
+
         [TestMethod]
         public void QOIRenderIsEnabledShouldPrevHandlerWhenSuccessful()
         {

src/settings-ui/Settings.UI/SettingsXAML/Views/PowerPreviewPage.xaml

@@ -147,8 +147,18 @@
                     </tkcontrols:SettingsCard>
 
                     <tkcontrols:SettingsCard
-                        x:Uid="FileExplorerPreview_ToggleSwitch_Preview_QOI"
+                        x:Uid="FileExplorerPreview_ToggleSwitch_Preview_BGCODE"
                         HeaderIcon="{ui:FontIcon Glyph=&#xE914;}"
+                        IsEnabled="{x:Bind ViewModel.BGCODERenderIsGpoDisabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}">
+                        <ToggleSwitch
+                            x:Uid="ToggleSwitch"
+                            IsEnabled="{x:Bind ViewModel.BGCODERenderIsGpoEnabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}"
+                            IsOn="{x:Bind ViewModel.BGCODERenderIsEnabled, Mode=TwoWay}" />
+                    </tkcontrols:SettingsCard>
+
+                    <tkcontrols:SettingsCard
+                        x:Uid="FileExplorerPreview_ToggleSwitch_Preview_QOI"
+                        HeaderIcon="{ui:FontIcon Glyph=&#xE91B;}"
                         IsEnabled="{x:Bind ViewModel.QOIRenderIsGpoDisabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}">
                         <ToggleSwitch
                             x:Uid="ToggleSwitch"
@@ -212,8 +222,18 @@
                     </tkcontrols:SettingsCard>
 
                     <tkcontrols:SettingsCard
-                        x:Uid="FileExplorerPreview_ToggleSwitch_Thumbnail_QOI"
+                        x:Uid="FileExplorerPreview_ToggleSwitch_Thumbnail_BGCODE"
                         HeaderIcon="{ui:FontIcon Glyph=&#xE914;}"
+                        IsEnabled="{x:Bind ViewModel.BGCODEThumbnailIsGpoDisabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}">
+                        <ToggleSwitch
+                            x:Uid="ToggleSwitch"
+                            IsEnabled="{x:Bind ViewModel.BGCODEThumbnailIsGpoEnabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}"
+                            IsOn="{x:Bind ViewModel.BGCODEThumbnailIsEnabled, Mode=TwoWay}" />
+                    </tkcontrols:SettingsCard>
+
+                    <tkcontrols:SettingsCard
+                        x:Uid="FileExplorerPreview_ToggleSwitch_Thumbnail_QOI"
+                        HeaderIcon="{ui:FontIcon Glyph=&#xE91B;}"
                         IsEnabled="{x:Bind ViewModel.QOIThumbnailIsGpoDisabled, Mode=OneWay, Converter={StaticResource BoolNegationConverter}}">
                         <ToggleSwitch
                             x:Uid="ToggleSwitch"
@@ -244,7 +264,7 @@
         </controls:SettingsPageControl.PrimaryLinks>
         <controls:SettingsPageControl.SecondaryLinks>
             <controls:PageLink Link="https://noraajunker.ch" Text="Noraa Junker's work on developer file preview" />
-            <controls:PageLink Link="https://www.pedrolamas.com" Text="Pedro Lamas's work on G-Code, STL, and QOI" />
+            <controls:PageLink Link="https://www.pedrolamas.com" Text="Pedro Lamas's work on G-Code, Binary G-Code, STL, and QOI" />
         </controls:SettingsPageControl.SecondaryLinks>
     </controls:SettingsPageControl>
 </Page>

src/settings-ui/Settings.UI/Strings/en-us/Resources.resw

@@ -2002,7 +2002,7 @@ Made with 💗 by Microsoft and the PowerToys community.</value>
     <value>File Locksmith lists which processes are using the selected files or directories and allows closing those processes.</value>
   </data>
   <data name="Oobe_FileExplorer.Description" xml:space="preserve">
-    <value>PowerToys introduces add-ons to the Windows File Explorer that will enable files like Markdown (.md), PDF (.pdf), SVG (.svg), STL (.stl), G-code (.gcode) and developer files to be viewed in the preview pane. It introduces File Explorer thumbnail support for a number of these file types as well.</value>
+    <value>PowerToys introduces add-ons to the Windows File Explorer that will enable files like Markdown (.md), PDF (.pdf), SVG (.svg), STL (.stl), G-code (.gcode), Binary G-code (.bgcode), and developer files to be viewed in the preview pane. It introduces File Explorer thumbnail support for a number of these file types as well.</value>
   </data>
   <data name="Oobe_ImageResizer.Description" xml:space="preserve">
     <value>Image Resizer is a Windows shell extension for simple bulk image-resizing.</value>
@@ -5015,6 +5015,18 @@ To record a specific window, enter the hotkey with the Alt key in the opposite m
   <data name="BugReportUnderConstruction" xml:space="preserve">
     <value>Bug report package is being created</value>
   </data>
+  <data name="FileExplorerPreview_ToggleSwitch_Preview_BGCODE.Header" xml:space="preserve">
+    <value>Binary Geometric Code</value>
+  </data>
+  <data name="FileExplorerPreview_ToggleSwitch_Preview_BGCODE.Description" xml:space="preserve">
+    <value>.bgcode</value>
+  </data>
+  <data name="FileExplorerPreview_ToggleSwitch_Thumbnail_BGCODE.Description" xml:space="preserve">
+    <value>.bgcode</value>
+  </data>
+  <data name="FileExplorerPreview_ToggleSwitch_Thumbnail_BGCODE.Header" xml:space="preserve">
+    <value>Binary Geometric Code</value>
+  </data>
   <data name="HighlightMode.Description" xml:space="preserve">
     <value>Highlight the cursor or dim the screen to spotlight it</value>
   </data>

src/settings-ui/Settings.UI/ViewModels/PowerPreviewViewModel.cs

@@ -125,6 +125,20 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
                 _gcodeRenderIsEnabled = Settings.Properties.EnableGcodePreview;
             }
 
+            _bgcodeRenderEnabledGpoRuleConfiguration = GPOWrapper.GetConfiguredBgcodePreviewEnabledValue();
+            if (_bgcodeRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled || _bgcodeRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled)
+            {
+                // Get the enabled state from GPO.
+                _bgcodeRenderEnabledStateIsGPOConfigured = true;
+                _bgcodeRenderIsEnabled = _bgcodeRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled;
+                _bgcodeRenderIsGpoEnabled = _bgcodeRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled;
+                _bgcodeRenderIsGpoDisabled = _bgcodeRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled;
+            }
+            else
+            {
+                _bgcodeRenderIsEnabled = Settings.Properties.EnableBgcodePreview;
+            }
+
             _qoiRenderEnabledGpoRuleConfiguration = GPOWrapper.GetConfiguredQoiPreviewEnabledValue();
             if (_qoiRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled || _qoiRenderEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled)
             {
@@ -181,6 +195,20 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
                 _gcodeThumbnailIsEnabled = Settings.Properties.EnableGcodeThumbnail;
             }
 
+            _bgcodeThumbnailEnabledGpoRuleConfiguration = GPOWrapper.GetConfiguredBgcodeThumbnailsEnabledValue();
+            if (_bgcodeThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled || _bgcodeThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled)
+            {
+                // Get the enabled state from GPO.
+                _bgcodeThumbnailEnabledStateIsGPOConfigured = true;
+                _bgcodeThumbnailIsEnabled = _bgcodeThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled;
+                _bgcodeThumbnailIsGpoEnabled = _bgcodeThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled;
+                _bgcodeThumbnailIsGpoDisabled = _bgcodeThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled;
+            }
+            else
+            {
+                _bgcodeThumbnailIsEnabled = Settings.Properties.EnableBgcodeThumbnail;
+            }
+
             _stlThumbnailEnabledGpoRuleConfiguration = GPOWrapper.GetConfiguredStlThumbnailsEnabledValue();
             if (_stlThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Disabled || _stlThumbnailEnabledGpoRuleConfiguration == GpoRuleConfigured.Enabled)
             {
@@ -251,6 +279,12 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
         private bool _gcodeRenderIsGpoDisabled;
         private bool _gcodeRenderIsEnabled;
 
+        private GpoRuleConfigured _bgcodeRenderEnabledGpoRuleConfiguration;
+        private bool _bgcodeRenderEnabledStateIsGPOConfigured;
+        private bool _bgcodeRenderIsGpoEnabled;
+        private bool _bgcodeRenderIsGpoDisabled;
+        private bool _bgcodeRenderIsEnabled;
+
         private GpoRuleConfigured _qoiRenderEnabledGpoRuleConfiguration;
         private bool _qoiRenderEnabledStateIsGPOConfigured;
         private bool _qoiRenderIsGpoEnabled;
@@ -275,6 +309,12 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
         private bool _gcodeThumbnailIsGpoDisabled;
         private bool _gcodeThumbnailIsEnabled;
 
+        private GpoRuleConfigured _bgcodeThumbnailEnabledGpoRuleConfiguration;
+        private bool _bgcodeThumbnailEnabledStateIsGPOConfigured;
+        private bool _bgcodeThumbnailIsGpoEnabled;
+        private bool _bgcodeThumbnailIsGpoDisabled;
+        private bool _bgcodeThumbnailIsEnabled;
+
         private GpoRuleConfigured _stlThumbnailEnabledGpoRuleConfiguration;
         private bool _stlThumbnailEnabledStateIsGPOConfigured;
         private bool _stlThumbnailIsGpoEnabled;
@@ -294,7 +334,8 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             {
                 return _svgRenderEnabledStateIsGPOConfigured || _mdRenderEnabledStateIsGPOConfigured
                     || _monacoRenderEnabledStateIsGPOConfigured || _pdfRenderEnabledStateIsGPOConfigured
-                    || _gcodeRenderEnabledStateIsGPOConfigured || _qoiRenderEnabledStateIsGPOConfigured;
+                    || _gcodeRenderEnabledStateIsGPOConfigured || _qoiRenderEnabledStateIsGPOConfigured
+                    || _bgcodeRenderEnabledStateIsGPOConfigured;
             }
         }
 
@@ -304,7 +345,7 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             {
                 return _svgThumbnailEnabledStateIsGPOConfigured || _pdfThumbnailEnabledStateIsGPOConfigured
                     || _gcodeThumbnailEnabledStateIsGPOConfigured || _stlThumbnailEnabledStateIsGPOConfigured
-                    || _qoiThumbnailEnabledStateIsGPOConfigured;
+                    || _qoiThumbnailEnabledStateIsGPOConfigured || _bgcodeThumbnailEnabledStateIsGPOConfigured;
             }
         }
 
@@ -778,6 +819,48 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             }
         }
 
+        public bool BGCODERenderIsEnabled
+        {
+            get
+            {
+                return _bgcodeRenderIsEnabled;
+            }
+
+            set
+            {
+                if (_bgcodeRenderEnabledStateIsGPOConfigured)
+                {
+                    // If it's GPO configured, shouldn't be able to change this state.
+                    return;
+                }
+
+                if (value != _bgcodeRenderIsEnabled)
+                {
+                    _bgcodeRenderIsEnabled = value;
+                    Settings.Properties.EnableBgcodePreview = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        // Used to only disable enabled button on forced enabled state. (With this users still able to change the utility properties.)
+        public bool BGCODERenderIsGpoEnabled
+        {
+            get
+            {
+                return _bgcodeRenderIsGpoEnabled;
+            }
+        }
+
+        // Used to disable the settings card on forced disabled state.
+        public bool BGCODERenderIsGpoDisabled
+        {
+            get
+            {
+                return _bgcodeRenderIsGpoDisabled;
+            }
+        }
+
         public bool GCODEThumbnailIsEnabled
         {
             get
@@ -820,6 +903,48 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             }
         }
 
+        public bool BGCODEThumbnailIsEnabled
+        {
+            get
+            {
+                return _bgcodeThumbnailIsEnabled;
+            }
+
+            set
+            {
+                if (_bgcodeThumbnailEnabledStateIsGPOConfigured)
+                {
+                    // If it's GPO configured, shouldn't be able to change this state.
+                    return;
+                }
+
+                if (value != _bgcodeThumbnailIsEnabled)
+                {
+                    _bgcodeThumbnailIsEnabled = value;
+                    Settings.Properties.EnableBgcodeThumbnail = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
+        // Used to only disable enabled button on forced enabled state. (With this users still able to change the utility properties.)
+        public bool BGCODEThumbnailIsGpoEnabled
+        {
+            get
+            {
+                return _bgcodeThumbnailIsGpoEnabled;
+            }
+        }
+
+        // Used to disable the settings card on forced disabled state.
+        public bool BGCODEThumbnailIsGpoDisabled
+        {
+            get
+            {
+                return _bgcodeThumbnailIsGpoDisabled;
+            }
+        }
+
         public bool STLThumbnailIsEnabled
         {
             get

tools/BugReportTool/BugReportTool/ProcessesList.cpp

@@ -27,6 +27,8 @@ std::vector<std::wstring> processes =
     L"PowerToys.Hosts.exe",
     L"PowerToys.GcodePreviewHandler.exe",
     L"PowerToys.GcodeThumbnailProvider.exe",
+    L"PowerToys.BgcodePreviewHandler.exe",
+    L"PowerToys.BgcodeThumbnailProvider.exe",
     L"PowerToys.MarkdownPreviewHandler.exe",
     L"PowerToys.MonacoPreviewHandler.exe",
     L"PowerToys.PdfPreviewHandler.exe",

tools/BugReportTool/BugReportTool/RegistryUtils.cpp

@@ -17,9 +17,11 @@ namespace
     { HKEY_CLASSES_ROOT, L"AppID\\{CF142243-F059-45AF-8842-DBBE9783DB14}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{07665729-6243-4746-95b7-79579308d1b2}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{ec52dea8-7c9f-4130-a77b-1737d0418507}" },
+    { HKEY_CLASSES_ROOT, L"CLSID\\{dd8de316-7b01-48e7-ba21-e92c646704af}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{8AA07897-C30B-4543-865B-00A0E5A1B32D}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{BCC13D15-9720-4CC4-8371-EA74A274741E}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{BFEE99B4-B74D-4348-BCA5-E757029647FF}" },
+    { HKEY_CLASSES_ROOT, L"CLSID\\{c28761a0-8420-43ad-bff3-40400543e2d4}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{8BC8AFC2-4E7C-4695-818E-8C1FFDCEA2AF}" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{51B4D7E5-7568-4234-B4BB-47FB3C016A69}\\InprocServer32" },
     { HKEY_CLASSES_ROOT, L"CLSID\\{0440049F-D1DC-4E46-B27B-98393D79486B}" },
@@ -41,6 +43,7 @@ namespace
         { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows\\CurrentVersion\\PreviewHandlers", L"{45769bcc-e8fd-42d0-947e-02beef77a1f5}" },
         { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows\\CurrentVersion\\PreviewHandlers", L"{07665729-6243-4746-95b7-79579308d1b2}" },
         { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows\\CurrentVersion\\PreviewHandlers", L"{ec52dea8-7c9f-4130-a77b-1737d0418507}" },
+        { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows\\CurrentVersion\\PreviewHandlers", L"{dd8de316-7b01-48e7-ba21-e92c646704af}" },
         { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Windows\\CurrentVersion\\PreviewHandlers", L"{8AA07897-C30B-4543-865B-00A0E5A1B32D}" },
         { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_BROWSER_EMULATION", L"prevhost.exe" },
         { HKEY_LOCAL_MACHINE, L"Software\\Microsoft\\Internet Explorer\\Main\\FeatureControl\\FEATURE_BROWSER_EMULATION", L"dllhost.exe" }

tools/BugReportTool/BugReportTool/ReportGPOValues.cpp

@@ -55,9 +55,11 @@ void ReportGPOValues(const std::filesystem::path &tmpDir)
     report << "getConfiguredMonacoPreviewEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredMonacoPreviewEnabledValue()) << std::endl;
     report << "getConfiguredPdfPreviewEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredPdfPreviewEnabledValue()) << std::endl;
     report << "getConfiguredGcodePreviewEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredGcodePreviewEnabledValue()) << std::endl;
+    report << "getConfiguredBgcodePreviewEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredBgcodePreviewEnabledValue()) << std::endl;
     report << "getConfiguredSvgThumbnailsEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredSvgThumbnailsEnabledValue()) << std::endl;
     report << "getConfiguredPdfThumbnailsEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredPdfThumbnailsEnabledValue()) << std::endl;
     report << "getConfiguredGcodeThumbnailsEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredGcodeThumbnailsEnabledValue()) << std::endl;
+    report << "getConfiguredBgcodeThumbnailsEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredBgcodeThumbnailsEnabledValue()) << std::endl;
     report << "getConfiguredStlThumbnailsEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredStlThumbnailsEnabledValue()) << std::endl;
     report << "getConfiguredHostsFileEditorEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredHostsFileEditorEnabledValue()) << std::endl;
     report << "getConfiguredImageResizerEnabledValue: " << gpo_rule_configured_to_string(powertoys_gpo::getConfiguredImageResizerEnabledValue()) << std::endl;

tools/Verification scripts/Check preview handler registration.ps1

@@ -15,12 +15,13 @@ function PublicStaticVoidMain {
     [String] $MachineWideHandler
   }
 
-  [String[]]$TypesToCheck = @(".markdown", ".mdtext", ".mdtxt", ".mdown", ".mkdn", ".mdwn", ".mkd", ".md", ".svg", ".svgz", ".pdf", ".gcode", ".stl", ".txt", ".ini", ".qoi")
+  [String[]]$TypesToCheck = @(".markdown", ".mdtext", ".mdtxt", ".mdown", ".mkdn", ".mdwn", ".mkd", ".md", ".svg", ".svgz", ".pdf", ".gcode", ".bgcode", ".stl", ".txt", ".ini", ".qoi")
   $IPREVIEW_HANDLER_CLSID = '{8895b1c6-b41f-4c1c-a562-0d564250836f}'
   $PowerToysHandlers = @{
     '{07665729-6243-4746-95b7-79579308d1b2}' = "PowerToys PDF handler"
     '{ddee2b8a-6807-48a6-bb20-2338174ff779}' = "PowerToys SVG handler"
     '{ec52dea8-7c9f-4130-a77b-1737d0418507}' = "PowerToys GCode handler"
+    '{dd8de316-7b01-48e7-ba21-e92c646704af}' = "PowerToys BGCode handler"
     '{8AA07897-C30B-4543-865B-00A0E5A1B32D}' = "PowerToys QOI handler"
     '{45769bcc-e8fd-42d0-947e-02beef77a1f5}' = "PowerToys Markdown handler"
     '{afbd5a44-2520-4ae0-9224-6cfce8fe4400}' = "PowerToys Monaco fallback handler"