this was kinda a dead end

This reverts commit c50d90c8c6.

NuGet.Config

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<configuration>
-    <packageSources>
-        <clear />
-        <!-- Dependencies that we can turn on to force override for testing purposes before uploading. -->
-        <!--<add key="Static Package Dependencies" value="dep\packages" />-->
-        <add key="TerminalDependencies" value="https://pkgs.dev.azure.com/ms/terminal/_packaging/TerminalDependencies/nuget/v3/index.json" />
-    </packageSources>
-    <disabledPackageSources>
-        <clear />
-    </disabledPackageSources>
-    <config>
-        <!-- TODO: TEMPORARY UNTIL PGO-Helpers is updated to search both. We shouldn't need to keep the globals path here. -->
-        <add key="globalPackagesFolder" value=".\packages" />
-        <add key="repositorypath" value=".\packages" />
-    </config>
-</configuration>

Scratch.sln

@@ -1,7 +1,6 @@
-
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.31205.134
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32611.2
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{C7167F0D-BC9F-4E6E-AFE1-012C56B48DB5}") = "Package", "scratch\ScratchIslandApp\Package\Package.wapproj", "{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}"
 EndProject
@@ -35,22 +34,53 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Types", "src\types\lib\type
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "dependencies", "dependencies", "{75AC9360-76FD-4ABC-AFEC-EF342BD2B3E9}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ExtensionHost", "scratch\ExtensionHost\ExtensionHost.vcxproj", "{1A505EDB-0961-431A-8DE5-31DF1A22B892}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ExtensionComponent", "scratch\ExtensionComponent\ExtensionComponent.vcxproj", "{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}"
+	ProjectSection(ProjectDependencies) = postProject
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4} = {CF317032-4253-4726-B4F5-6D5CEA2E75D4}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SampleExtensions", "scratch\SampleExtensions\SampleExtensions.vcxproj", "{CF317032-4253-4726-B4F5-6D5CEA2E75D4}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Sample Application", "Sample Application", "{4415272B-ABE7-4510-9491-67AB4F855BBF}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Extension App", "Extension App", "{CAD8C045-8805-4DBE-9028-994C86C60F7B}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotnetWasdkApp", "scratch\DotnetWasdkApp\DotnetWasdkApp.csproj", "{69BDA742-A592-4A02-8EE9-BA47ABFA5887}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DotnetWasdkComponent", "scratch\DotnetWasdkComponent\DotnetWasdkComponent.csproj", "{35573630-40E7-4428-89D1-E1D89DDA8787}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		AuditMode|Any CPU = AuditMode|Any CPU
+		AuditMode|ARM = AuditMode|ARM
 		AuditMode|ARM64 = AuditMode|ARM64
 		AuditMode|x64 = AuditMode|x64
 		AuditMode|x86 = AuditMode|x86
+		Debug|Any CPU = Debug|Any CPU
+		Debug|ARM = Debug|ARM
 		Debug|ARM64 = Debug|ARM64
 		Debug|x64 = Debug|x64
 		Debug|x86 = Debug|x86
+		Fuzzing|Any CPU = Fuzzing|Any CPU
+		Fuzzing|ARM = Fuzzing|ARM
 		Fuzzing|ARM64 = Fuzzing|ARM64
 		Fuzzing|x64 = Fuzzing|x64
 		Fuzzing|x86 = Fuzzing|x86
+		Release|Any CPU = Release|Any CPU
+		Release|ARM = Release|ARM
 		Release|ARM64 = Release|ARM64
 		Release|x64 = Release|x64
 		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|Any CPU.ActiveCfg = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|Any CPU.Build.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|Any CPU.Deploy.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|ARM.ActiveCfg = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|ARM.Build.0 = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|ARM.Deploy.0 = Release|x64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|ARM64.ActiveCfg = Debug|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|ARM64.Build.0 = Debug|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|ARM64.Deploy.0 = Debug|ARM64
@@ -60,6 +90,12 @@ Global
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|x86.ActiveCfg = Debug|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|x86.Build.0 = Debug|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.AuditMode|x86.Deploy.0 = Debug|x86
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|Any CPU.Build.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|Any CPU.Deploy.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|ARM.ActiveCfg = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|ARM.Build.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|ARM.Deploy.0 = Debug|x64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|ARM64.Build.0 = Debug|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|ARM64.Deploy.0 = Debug|ARM64
@@ -69,6 +105,12 @@ Global
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|x86.ActiveCfg = Debug|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|x86.Build.0 = Debug|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Debug|x86.Deploy.0 = Debug|x86
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|Any CPU.ActiveCfg = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|Any CPU.Build.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|Any CPU.Deploy.0 = Debug|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|ARM.ActiveCfg = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|ARM.Build.0 = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|ARM.Deploy.0 = Release|x64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|ARM64.ActiveCfg = Debug|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|ARM64.Build.0 = Debug|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|ARM64.Deploy.0 = Debug|ARM64
@@ -78,6 +120,12 @@ Global
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|x86.ActiveCfg = Debug|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|x86.Build.0 = Debug|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Fuzzing|x86.Deploy.0 = Debug|x86
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|Any CPU.ActiveCfg = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|Any CPU.Build.0 = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|Any CPU.Deploy.0 = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|ARM.ActiveCfg = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|ARM.Build.0 = Release|x64
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|ARM.Deploy.0 = Release|x64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|ARM64.ActiveCfg = Release|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|ARM64.Build.0 = Release|ARM64
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|ARM64.Deploy.0 = Release|ARM64
@@ -87,133 +135,460 @@ Global
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|x86.ActiveCfg = Release|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|x86.Build.0 = Release|x86
 		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB}.Release|x86.Deploy.0 = Release|x86
+		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|Any CPU.ActiveCfg = AuditMode|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|Any CPU.Build.0 = AuditMode|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|ARM.ActiveCfg = AuditMode|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|ARM.Build.0 = AuditMode|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|ARM64.ActiveCfg = AuditMode|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|ARM64.Build.0 = AuditMode|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|x64.ActiveCfg = AuditMode|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|x64.Build.0 = AuditMode|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|x86.ActiveCfg = AuditMode|Win32
 		{A4394404-37F7-41C1-802B-49788D3720E3}.AuditMode|x86.Build.0 = AuditMode|Win32
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|Any CPU.Build.0 = Debug|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|ARM.ActiveCfg = Debug|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|ARM.Build.0 = Debug|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|ARM64.Build.0 = Debug|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|x64.ActiveCfg = Debug|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|x64.Build.0 = Debug|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|x86.ActiveCfg = Debug|Win32
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Debug|x86.Build.0 = Debug|Win32
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|Any CPU.ActiveCfg = Fuzzing|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|Any CPU.Build.0 = Fuzzing|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|ARM.ActiveCfg = Fuzzing|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|ARM.Build.0 = Fuzzing|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|ARM64.ActiveCfg = Fuzzing|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|ARM64.Build.0 = Fuzzing|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|x64.ActiveCfg = Fuzzing|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|x64.Build.0 = Fuzzing|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|x86.ActiveCfg = Fuzzing|Win32
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Fuzzing|x86.Build.0 = Fuzzing|Win32
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|Any CPU.ActiveCfg = Release|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|Any CPU.Build.0 = Release|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|ARM.ActiveCfg = Release|x64
+		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|ARM.Build.0 = Release|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|ARM64.ActiveCfg = Release|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|ARM64.Build.0 = Release|ARM64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|x64.ActiveCfg = Release|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|x64.Build.0 = Release|x64
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|x86.ActiveCfg = Release|Win32
 		{A4394404-37F7-41C1-802B-49788D3720E3}.Release|x86.Build.0 = Release|Win32
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|Any CPU.ActiveCfg = AuditMode|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|Any CPU.Build.0 = AuditMode|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|ARM.ActiveCfg = AuditMode|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|ARM.Build.0 = AuditMode|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|ARM64.ActiveCfg = AuditMode|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|ARM64.Build.0 = AuditMode|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|x64.ActiveCfg = AuditMode|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|x64.Build.0 = AuditMode|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|x86.ActiveCfg = AuditMode|Win32
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.AuditMode|x86.Build.0 = AuditMode|Win32
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|Any CPU.Build.0 = Debug|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|ARM.ActiveCfg = Debug|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|ARM.Build.0 = Debug|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|ARM64.Build.0 = Debug|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|x64.ActiveCfg = Debug|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|x64.Build.0 = Debug|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|x86.ActiveCfg = Debug|Win32
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Debug|x86.Build.0 = Debug|Win32
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|Any CPU.ActiveCfg = Fuzzing|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|Any CPU.Build.0 = Fuzzing|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|ARM.ActiveCfg = Fuzzing|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|ARM.Build.0 = Fuzzing|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|ARM64.ActiveCfg = Fuzzing|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|ARM64.Build.0 = Fuzzing|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|x64.ActiveCfg = Fuzzing|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|x64.Build.0 = Fuzzing|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|x86.ActiveCfg = Fuzzing|Win32
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Fuzzing|x86.Build.0 = Fuzzing|Win32
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|Any CPU.ActiveCfg = Release|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|Any CPU.Build.0 = Release|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|ARM.ActiveCfg = Release|x64
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|ARM.Build.0 = Release|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|ARM64.ActiveCfg = Release|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|ARM64.Build.0 = Release|ARM64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|x64.ActiveCfg = Release|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|x64.Build.0 = Release|x64
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|x86.ActiveCfg = Release|Win32
 		{26C51792-41A3-4FE0-AB5E-8B69D557BF91}.Release|x86.Build.0 = Release|Win32
+		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|Any CPU.ActiveCfg = AuditMode|x64
+		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|Any CPU.Build.0 = AuditMode|x64
+		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|ARM.ActiveCfg = AuditMode|x64
+		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|ARM.Build.0 = AuditMode|x64
 		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|ARM64.ActiveCfg = AuditMode|ARM64
 		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|ARM64.Build.0 = AuditMode|ARM64
 		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|x64.ActiveCfg = AuditMode|x64
 		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|x64.Build.0 = AuditMode|x64
 		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|x86.ActiveCfg = AuditMode|Win32
 		{B4427499-9FDE-4208-B456-5BC580637633}.AuditMode|x86.Build.0 = AuditMode|Win32
+		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|Any CPU.Build.0 = Debug|x64
+		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|ARM.ActiveCfg = Debug|x64
+		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|ARM.Build.0 = Debug|x64
 		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|ARM64.Build.0 = Debug|ARM64
 		{B4427499-9FDE-4208-B456-5BC580637633}.Debug|x64.ActiveCfg = Debug|x64
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+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|ARM.ActiveCfg = Debug|ARM
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|ARM.Build.0 = Debug|ARM
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|ARM64.ActiveCfg = Debug|ARM64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|ARM64.Build.0 = Debug|ARM64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|x64.ActiveCfg = Debug|x64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|x64.Build.0 = Debug|x64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|x86.ActiveCfg = Debug|Win32
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Fuzzing|x86.Build.0 = Debug|Win32
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|Any CPU.ActiveCfg = Release|x64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|Any CPU.Build.0 = Release|x64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|ARM.ActiveCfg = Release|ARM
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|ARM.Build.0 = Release|ARM
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|ARM64.ActiveCfg = Release|ARM64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|ARM64.Build.0 = Release|ARM64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|x64.ActiveCfg = Release|x64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|x64.Build.0 = Release|x64
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|x86.ActiveCfg = Release|Win32
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D}.Release|x86.Build.0 = Release|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|Any CPU.ActiveCfg = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|Any CPU.Build.0 = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|ARM.ActiveCfg = Debug|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|ARM.Build.0 = Debug|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|ARM64.ActiveCfg = Debug|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|ARM64.Build.0 = Debug|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|x64.ActiveCfg = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|x64.Build.0 = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|x86.ActiveCfg = Debug|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.AuditMode|x86.Build.0 = Debug|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|Any CPU.Build.0 = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|ARM.ActiveCfg = Debug|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|ARM.Build.0 = Debug|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|ARM64.Build.0 = Debug|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|x64.ActiveCfg = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|x64.Build.0 = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|x86.ActiveCfg = Debug|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Debug|x86.Build.0 = Debug|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|Any CPU.ActiveCfg = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|Any CPU.Build.0 = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|ARM.ActiveCfg = Debug|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|ARM.Build.0 = Debug|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|ARM64.ActiveCfg = Debug|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|ARM64.Build.0 = Debug|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|x64.ActiveCfg = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|x64.Build.0 = Debug|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|x86.ActiveCfg = Debug|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Fuzzing|x86.Build.0 = Debug|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|Any CPU.ActiveCfg = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|Any CPU.Build.0 = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|ARM.ActiveCfg = Release|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|ARM.Build.0 = Release|ARM
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|ARM64.ActiveCfg = Release|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|ARM64.Build.0 = Release|ARM64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|x64.ActiveCfg = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|x64.Build.0 = Release|x64
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|x86.ActiveCfg = Release|Win32
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4}.Release|x86.Build.0 = Release|Win32
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|Any CPU.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|Any CPU.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|Any CPU.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|ARM.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|ARM.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|ARM.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|ARM64.ActiveCfg = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|ARM64.Build.0 = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|ARM64.Deploy.0 = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|x64.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|x64.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|x64.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|x86.ActiveCfg = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|x86.Build.0 = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.AuditMode|x86.Deploy.0 = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|Any CPU.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|Any CPU.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|Any CPU.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|ARM.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|ARM.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|ARM.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|ARM64.ActiveCfg = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|ARM64.Build.0 = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|ARM64.Deploy.0 = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|x64.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|x64.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|x64.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|x86.ActiveCfg = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|x86.Build.0 = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Debug|x86.Deploy.0 = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|Any CPU.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|Any CPU.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|Any CPU.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|ARM.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|ARM.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|ARM.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|ARM64.ActiveCfg = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|ARM64.Build.0 = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|ARM64.Deploy.0 = Debug|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|x64.ActiveCfg = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|x64.Build.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|x64.Deploy.0 = Debug|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|x86.ActiveCfg = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|x86.Build.0 = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Fuzzing|x86.Deploy.0 = Debug|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|Any CPU.ActiveCfg = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|Any CPU.Build.0 = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|Any CPU.Deploy.0 = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|ARM.ActiveCfg = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|ARM.Build.0 = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|ARM.Deploy.0 = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|ARM64.ActiveCfg = Release|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|ARM64.Build.0 = Release|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|ARM64.Deploy.0 = Release|arm64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|x64.ActiveCfg = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|x64.Build.0 = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|x64.Deploy.0 = Release|x64
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|x86.ActiveCfg = Release|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|x86.Build.0 = Release|x86
+		{69BDA742-A592-4A02-8EE9-BA47ABFA5887}.Release|x86.Deploy.0 = Release|x86
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|Any CPU.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|Any CPU.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|ARM.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|ARM.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|ARM64.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|ARM64.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|x64.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|x64.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|x86.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.AuditMode|x86.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Debug|Any CPU.Build.0 = Debug|Any CPU
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Debug|ARM.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Debug|ARM64.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Debug|ARM64.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Debug|x64.ActiveCfg = Debug|x64
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Fuzzing|Any CPU.Build.0 = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Fuzzing|ARM.ActiveCfg = Debug|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Fuzzing|ARM.Build.0 = Debug|Any CPU
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Fuzzing|ARM64.Build.0 = Debug|Any CPU
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Fuzzing|x64.Build.0 = Debug|Any CPU
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|Any CPU.Build.0 = Release|Any CPU
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|ARM.Build.0 = Release|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|ARM64.ActiveCfg = Release|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|ARM64.Build.0 = Release|Any CPU
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+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|x64.Build.0 = Release|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|x86.ActiveCfg = Release|Any CPU
+		{35573630-40E7-4428-89D1-E1D89DDA8787}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
+		{CF31505E-3BAE-4C0A-81D7-F1EB279F40BB} = {4415272B-ABE7-4510-9491-67AB4F855BBF}
+		{A4394404-37F7-41C1-802B-49788D3720E3} = {4415272B-ABE7-4510-9491-67AB4F855BBF}
+		{26C51792-41A3-4FE0-AB5E-8B69D557BF91} = {4415272B-ABE7-4510-9491-67AB4F855BBF}
+		{B4427499-9FDE-4208-B456-5BC580637633} = {4415272B-ABE7-4510-9491-67AB4F855BBF}
 		{6BAE5851-50D5-4934-8D5E-30361A8A40F3} = {75AC9360-76FD-4ABC-AFEC-EF342BD2B3E9}
 		{18D09A24-8240-42D6-8CB6-236EEE820263} = {75AC9360-76FD-4ABC-AFEC-EF342BD2B3E9}
+		{1A505EDB-0961-431A-8DE5-31DF1A22B892} = {CAD8C045-8805-4DBE-9028-994C86C60F7B}
+		{E1CF4226-B94E-4A86-B62F-02E1A2EB3A0D} = {CAD8C045-8805-4DBE-9028-994C86C60F7B}
+		{CF317032-4253-4726-B4F5-6D5CEA2E75D4} = {4415272B-ABE7-4510-9491-67AB4F855BBF}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {05EAE315-9188-4D7B-B889-7D5F480A8915}

scratch/DotnetWasdkApp/App.xaml

@@ -0,0 +1,14 @@
+<Application x:Class="DotnetWasdkApp.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="using:DotnetWasdkApp">
+    <Application.Resources>
+        <ResourceDictionary>
+            <ResourceDictionary.MergedDictionaries>
+                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
+                <!--  Other merged dictionaries here  -->
+            </ResourceDictionary.MergedDictionaries>
+            <!--  Other app resources here  -->
+        </ResourceDictionary>
+    </Application.Resources>
+</Application>

scratch/DotnetWasdkApp/App.xaml.cs

@@ -0,0 +1,51 @@
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Controls.Primitives;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media;
+using Microsoft.UI.Xaml.Navigation;
+using Microsoft.UI.Xaml.Shapes;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace DotnetWasdkApp
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    public partial class App : Application
+    {
+        /// <summary>
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            this.InitializeComponent();
+        }
+
+        /// <summary>
+        /// Invoked when the application is launched normally by the end user.  Other entry points
+        /// will be used such as when the application is launched to open a specific file.
+        /// </summary>
+        /// <param name="args">Details about the launch request and process.</param>
+        protected override void OnLaunched(Microsoft.UI.Xaml.LaunchActivatedEventArgs args)
+        {
+            m_window = new MainWindow();
+            m_window.Activate();
+        }
+
+        private Window m_window;
+    }
+}

scratch/DotnetWasdkApp/DotnetWasdkApp.csproj

@@ -0,0 +1,53 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows10.0.22000.0</TargetFramework>
+    <TargetPlatformMinVersion>10.0.22000.0</TargetPlatformMinVersion>
+    <RootNamespace>DotnetWasdkApp</RootNamespace>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <Platforms>x86;x64;arm64</Platforms>
+    <RuntimeIdentifiers>win10-x86;win10-x64;win10-arm64</RuntimeIdentifiers>
+    <PublishProfile>win10-$(Platform).pubxml</PublishProfile>
+    <UseWinUI>true</UseWinUI>
+    <EnableMsixTooling>true</EnableMsixTooling>
+
+    <WindowsSdkPackageVersion>10.0.22621.27</WindowsSdkPackageVersion>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="Assets\SplashScreen.scale-200.png" />
+    <Content Include="Assets\LockScreenLogo.scale-200.png" />
+    <Content Include="Assets\Square150x150Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Assets\StoreLogo.png" />
+    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+
+  <ItemGroup>
+      <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.3.230331000" />
+      <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.22621.756" />
+    <Manifest Include="$(ApplicationManifest)" />
+  </ItemGroup>
+
+  <!-- 
+    Defining the "Msix" ProjectCapability here allows the Single-project MSIX Packaging
+    Tools extension to be activated for this project even if the Windows App SDK Nuget
+    package has not yet been restored.
+  -->
+  <ItemGroup Condition="'$(DisableMsixProjectCapabilityAddedByProject)'!='true' and '$(EnableMsixTooling)'=='true'">
+    <ProjectCapability Include="Msix" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\DotnetWasdkComponent\DotnetWasdkComponent.csproj" />
+  </ItemGroup>
+
+  <!-- 
+    Defining the "HasPackageAndPublishMenuAddedByProject" property here allows the Solution 
+    Explorer "Package and Publish" context menu entry to be enabled for this project even if 
+    the Windows App SDK Nuget package has not yet been restored.
+  -->
+  <PropertyGroup Condition="'$(DisableHasPackageAndPublishMenuAddedByProject)'!='true' and '$(EnableMsixTooling)'=='true'">
+    <HasPackageAndPublishMenu>true</HasPackageAndPublishMenu>
+  </PropertyGroup>
+</Project>

scratch/DotnetWasdkApp/MainWindow.xaml

@@ -0,0 +1,17 @@
+<Window x:Class="DotnetWasdkApp.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:local="using:DotnetWasdkApp"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d">
+
+    <StackPanel HorizontalAlignment="Center"
+                VerticalAlignment="Center"
+                Orientation="Horizontal">
+        <Button x:Name="myButton"
+                Click="myButton_Click">
+            Click Me
+        </Button>
+    </StackPanel>
+</Window>

scratch/DotnetWasdkApp/MainWindow.xaml.cs

@@ -0,0 +1,39 @@
+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Controls;
+using Microsoft.UI.Xaml.Controls.Primitives;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI.Xaml.Input;
+using Microsoft.UI.Xaml.Media;
+using Microsoft.UI.Xaml.Navigation;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace DotnetWasdkApp
+{
+    /// <summary>
+    /// An empty window that can be used on its own or navigated to within a Frame.
+    /// </summary>
+    public sealed partial class MainWindow : Window
+    {
+        private DotnetWasdkComponent.Class1 _class1 = new DotnetWasdkComponent.Class1();
+
+        public MainWindow()
+        {
+            this.InitializeComponent();
+        }
+
+        private void myButton_Click(object sender, RoutedEventArgs e)
+        {
+            _class1.MySharpProperty += 1;
+            myButton.Content = "Clicked "  + _class1.MySharpProperty;
+        }
+    }
+}

scratch/DotnetWasdkApp/Package.appxmanifest

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  IgnorableNamespaces="uap rescap">
+
+  <Identity
+    Name="29d39bee-17b1-41fc-9ed7-24668c111d13"
+    Publisher="CN=migrie"
+    Version="1.0.0.0" />
+
+  <Properties>
+    <DisplayName>DotnetWasdkApp</DisplayName>
+    <PublisherDisplayName>migrie</PublisherDisplayName>
+    <Logo>Assets\StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.17763.0" MaxVersionTested="10.0.19041.0" />
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.17763.0" MaxVersionTested="10.0.19041.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate"/>
+  </Resources>
+
+  <Applications>
+    <Application Id="App"
+      Executable="$targetnametoken$.exe"
+      EntryPoint="$targetentrypoint$">
+      <uap:VisualElements
+        DisplayName="DotnetWasdkApp"
+        Description="DotnetWasdkApp"
+        BackgroundColor="transparent"
+        Square150x150Logo="Assets\Square150x150Logo.png"
+        Square44x44Logo="Assets\Square44x44Logo.png">
+        <uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png" />
+        <uap:SplashScreen Image="Assets\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+</Package>

scratch/DotnetWasdkApp/Properties/launchSettings.json

@@ -0,0 +1,10 @@
+{
+  "profiles": {
+    "DotnetWasdkApp (Package)": {
+      "commandName": "MsixPackage"
+    },
+    "DotnetWasdkApp (Unpackaged)": {
+      "commandName": "Project"
+    }
+  }
+}

scratch/DotnetWasdkApp/app.manifest

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="DotnetWasdkApp.app"/>
+
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <!-- The combination of below two tags have the following effect:
+           1) Per-Monitor for >= Windows 10 Anniversary Update
+           2) System < Windows 10 Anniversary Update
+      -->
+      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true/PM</dpiAware>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">PerMonitorV2, PerMonitor</dpiAwareness>
+    </windowsSettings>
+  </application>
+</assembly>

scratch/DotnetWasdkComponent/Class1.cs

@@ -0,0 +1,35 @@
+using WinRT.Interop;
+using WinRT;
+using SampleExtensions;
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Windows.Foundation;
+
+// To learn more about WinUI, the WinUI project structure,
+// and more about our project templates, see: http://aka.ms/winui-project-info.
+
+namespace DotnetWasdkComponent
+{
+    public sealed class Class1 : IExtension
+    {        
+        public int MySharpProperty { get; set; }
+
+        public Windows.UI.Xaml.FrameworkElement PaneContent => throw new NotImplementedException();
+
+        public Class1()
+        {
+            MySharpProperty = 11;
+        }
+
+        public event TypedEventHandler<object, SendInputArgs> SendInputRequested;
+
+        public int DoTheThing()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

scratch/DotnetWasdkComponent/DotnetWasdkComponent.csproj

@@ -0,0 +1,34 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net6.0-windows10.0.22000.0</TargetFramework>
+    <TargetPlatformMinVersion>10.0.22000.0</TargetPlatformMinVersion>
+    <RootNamespace>DotnetWasdkComponent</RootNamespace>
+    <RuntimeIdentifiers>win10-x86;win10-x64;win10-arm64</RuntimeIdentifiers>
+    <UseWinUI>false</UseWinUI>
+
+    <WindowsSdkPackageVersion>10.0.22621.27</WindowsSdkPackageVersion>
+
+    <Platforms>AnyCPU;x64</Platforms>
+  </PropertyGroup>
+  <ItemGroup>
+    <None Remove="SampleExtensions.winmd" />
+  </ItemGroup>
+
+  <ItemGroup>
+      <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.3.230331000" />
+    <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.22621.756" />
+    <PackageReference Include="Microsoft.Windows.CsWinRT" Version="2.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\SampleExtensions\SampleExtensions.vcxproj" />
+  </ItemGroup>
+  
+  <PropertyGroup>
+    <CsWinRTComponent>true</CsWinRTComponent>
+    <!--<CsWinRTIncludes>SampleExtensions;Windows.UI.Xaml;</CsWinRTIncludes>-->
+    <CsWinRTIncludes>SampleExtensions;</CsWinRTIncludes>
+
+  </PropertyGroup>
+  
+</Project>

scratch/ExtensionComponent/ExtensionClass.cpp

@@ -0,0 +1,117 @@
+#include "pch.h"
+#include "ExtensionClass.h"
+#include "ExtensionClass.g.cpp"
+
+namespace winrt
+{
+    namespace MUX = Microsoft::UI::Xaml;
+    namespace WUX = Windows::UI::Xaml;
+    using IInspectable = Windows::Foundation::IInspectable;
+}
+
+namespace winrt::ExtensionComponent::implementation
+{
+    int32_t ExtensionClass::MyProperty()
+    {
+        return 99;
+    }
+
+    void ExtensionClass::MyProperty(int32_t /* value */)
+    {
+        throw hresult_not_implemented();
+    }
+
+    int32_t ExtensionClass::DoTheThing()
+    {
+        return 101;
+    }
+
+    void ExtensionClass::_webMessageReceived(const IInspectable& sender,
+                                                               winrt::Microsoft::Web::WebView2::Core::CoreWebView2WebMessageReceivedEventArgs args)
+    {
+        auto message{ args.TryGetWebMessageAsString() };
+        if (!message.empty())
+        {
+            auto uri = winrt::Windows::Foundation::Uri(message);
+            if (uri.SchemeName() == L"sendinput")
+            {
+                //MyButtonHandler(uri);
+                auto query = winrt::Windows::Foundation::WwwFormUrlDecoder(uri.Query());
+                winrt::hstring asdf = query.First().Current().Value();
+                auto sendInput = winrt::SampleExtensions::SendInputArgs(asdf);
+                this->_SendInputRequestedHandlers(*this, sendInput);
+            }
+        }
+
+        return;
+    }
+
+    winrt::fire_and_forget ExtensionClass::_makeWebView(const WUX::Controls::StackPanel parent)
+    {
+        winrt::MUX::Controls::WebView2 wv{ nullptr };
+        wv = winrt::MUX::Controls::WebView2();
+        wv.HorizontalAlignment(WUX::HorizontalAlignment::Stretch);
+        wv.Height(300);
+        parent.Children().Append(wv);
+        co_await wv.EnsureCoreWebView2Async();
+
+        std::string page = R"_(
+<html>
+
+
+<body>
+<h1>My First Heading</h1>
+Hello world
+
+<form id="myForm">
+  <label for="myInput">Enter text:</label>
+  <input type="text" id="myInput" name="myInput">
+  <button type="submit" id="myButton">Submit</button>
+</form>
+
+</body>
+
+
+<script>
+document.getElementById("myForm").addEventListener("submit", function(event) {
+  event.preventDefault();
+  var input = document.getElementById("myInput").value;
+  window.chrome.webview.postMessage("sendInput://?text=" + encodeURIComponent(input));
+});
+</script>
+
+</html>
+    )_";
+
+        wv.WebMessageReceived({ this, &ExtensionClass::_webMessageReceived });
+
+        // wv.CoreWebView2().Navigate(L"https://www.github.com/microsoft/terminal");
+        wv.CoreWebView2().NavigateToString(winrt::to_hstring(page));
+    }
+
+    winrt::Windows::UI::Xaml::FrameworkElement ExtensionClass::PaneContent()
+    {
+        // winrt::Windows::UI::Xaml::Controls::Button myButton{};
+        // myButton.Content(winrt::box_value(L"This came from an extension"));
+        // // Add an onclick handler to the button that sets the background of the button to a random color
+        // myButton.Click([myButton](auto&&, auto&&) {
+        //     winrt::Windows::UI::Xaml::Media::SolidColorBrush brush{};
+        //     brush.Color(winrt::Windows::UI::ColorHelper::FromArgb(255, rand() % 255, rand() % 255, rand() % 255));
+        //     myButton.Background(brush);
+        // });
+        // return myButton;
+
+        // // This may be hard to impossible, due to
+        // // https://github.com/microsoft/microsoft-ui-xaml/issues/6299
+        // winrt::ExtensionComponent::ExtensionUserControl myControl{};
+        // return myControl;
+
+        winrt::WUX::Controls::StackPanel sp{};
+        sp.Orientation(WUX::Controls::Orientation::Vertical);
+        sp.HorizontalAlignment(WUX::HorizontalAlignment::Stretch);
+        sp.VerticalAlignment(WUX::VerticalAlignment::Stretch);
+        _makeWebView(sp);
+        return sp;
+    }
+
+}

scratch/ExtensionComponent/ExtensionClass.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "ExtensionClass.g.h"
+
+namespace winrt::ExtensionComponent::implementation
+{
+    struct ExtensionClass : ExtensionClassT<ExtensionClass>
+    {
+        ExtensionClass() = default;
+
+        int32_t MyProperty();
+        void MyProperty(int32_t value);
+        int32_t DoTheThing();
+        winrt::Windows::UI::Xaml::FrameworkElement PaneContent();
+
+        // typed event handler for the SendInputRequested event
+        winrt::event_token SendInputRequested(winrt::Windows::Foundation::TypedEventHandler<winrt::Windows::Foundation::IInspectable, winrt::SampleExtensions::SendInputArgs> const& handler)
+        {
+            return _SendInputRequestedHandlers.add(handler);
+        }
+        void SendInputRequested(winrt::event_token const& token) noexcept
+        {
+            _SendInputRequestedHandlers.remove(token);
+        }
+
+    private:
+        winrt::fire_and_forget _makeWebView(const winrt::Windows::UI::Xaml::Controls::StackPanel parent);
+        void _webMessageReceived(const winrt::Windows::Foundation::IInspectable& sender,
+                                 winrt::Microsoft::Web::WebView2::Core::CoreWebView2WebMessageReceivedEventArgs args);
+
+        winrt::event<winrt::Windows::Foundation::TypedEventHandler<winrt::Windows::Foundation::IInspectable, winrt::SampleExtensions::SendInputArgs>> _SendInputRequestedHandlers;
+    };
+}
+
+namespace winrt::ExtensionComponent::factory_implementation
+{
+    struct ExtensionClass : ExtensionClassT<ExtensionClass, implementation::ExtensionClass>
+    {
+    };
+}

scratch/ExtensionComponent/ExtensionClass.idl

@@ -0,0 +1,8 @@
+namespace ExtensionComponent
+{
+    [default_interface] runtimeclass ExtensionClass : SampleExtensions.IExtension
+    {
+        ExtensionClass();
+        Int32 MyProperty;
+    }
+}

scratch/ExtensionComponent/ExtensionComponent.def

@@ -0,0 +1,3 @@
+EXPORTS
+DllCanUnloadNow = WINRT_CanUnloadNow                    PRIVATE
+DllGetActivationFactory = WINRT_GetActivationFactory    PRIVATE

scratch/ExtensionComponent/ExtensionComponent.vcxproj

@@ -0,0 +1,216 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <CppWinRTOptimized>true</CppWinRTOptimized>
+    <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
+    <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
+    <MinimalCoreWin>true</MinimalCoreWin>
+    <ProjectGuid>{e1cf4226-b94e-4a86-b62f-02e1a2eb3a0d}</ProjectGuid>
+    <ProjectName>ExtensionComponent</ProjectName>
+    <RootNamespace>ExtensionComponent</RootNamespace>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
+    <AppContainerApplication>true</AppContainerApplication>
+    <ApplicationType>Windows Store</ApplicationType>
+    <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
+    <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.22621.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformMinVersion>10.0.18362.0</WindowsTargetPlatformMinVersion>
+  </PropertyGroup>
+  <Import Project="..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
+
+  <Import Project="..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.props" Condition="Exists('..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.props')" />
+
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM">
+      <Configuration>Release</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '16.0'">v142</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '15.0'">v141</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '14.0'">v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <GenerateManifest>false</GenerateManifest>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <LinkIncremental>false</LinkIncremental>
+  </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.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="PropertySheet.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <PrecompiledHeaderOutputFile>$(IntDir)pch.pch</PrecompiledHeaderOutputFile>
+      <WarningLevel>Level4</WarningLevel>
+      <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
+      <PreprocessorDefinitions>_WINRT_DLL;WIN32_LEAN_AND_MEAN;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateWindowsMetadata>false</GenerateWindowsMetadata>
+      <ModuleDefinitionFile>ExtensionComponent.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="ExtensionUserControl.xaml.h">
+      <DependentUpon>ExtensionUserControl.xaml</DependentUpon>
+    </ClInclude>
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="ExtensionClass.h">
+      <DependentUpon>ExtensionClass.idl</DependentUpon>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="ExtensionUserControl.xaml.cpp">
+      <DependentUpon>ExtensionUserControl.xaml</DependentUpon>
+    </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader>Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="ExtensionClass.cpp">
+      <DependentUpon>ExtensionClass.idl</DependentUpon>
+    </ClCompile>
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="ExtensionClass.idl" />
+    <Midl Include="ExtensionUserControl.idl" >
+      <DependentUpon>ExtensionUserControl.xaml</DependentUpon>
+    </Midl>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="ExtensionComponent.def" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="PropertySheet.props" />
+    <Text Include="readme.txt">
+      <DeploymentContent>false</DeploymentContent>
+    </Text>
+  </ItemGroup>
+  <!-- ========================== Other References ========================= -->
+  <ItemGroup>
+    <!--     <Reference Include="SampleApp">
+      <HintPath>$(OpenConsoleCommonOutDir)\SampleAppLib\SampleApp.winmd</HintPath>
+      <HintPath>..\..\bin\x64\Debug\SampleAppLib\SampleApp.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference> -->
+    <Reference Include="SampleExtensions">
+      <!-- <HintPath>$(OpenConsoleCommonOutDir)\SampleAppLib\SampleApp.winmd</HintPath> -->
+      <!-- <HintPath>..\..\bin\x64\Debug\SampleAppLib\SampleApp.winmd</HintPath> -->
+      <HintPath>..\..\x64\Debug\SampleExtensions\SampleExtensions.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference>
+    <!-- <Reference Include="Microsoft.Terminal.Core">
+      <HintPath>$(OpenConsoleCommonOutDir)TerminalCore\Microsoft.Terminal.Core.winmd</HintPath>
+      <HintPath>..\..\bin\x64\debug\TerminalCore\Microsoft.Terminal.Core.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference>
+    <Reference Include="Microsoft.Terminal.TerminalConnection">
+      <HintPath>$(OpenConsoleCommonOutDir)TerminalConnection\Microsoft.Terminal.TerminalConnection.winmd</HintPath>
+      <HintPath>..\..\bin\x64\debug\TerminalConnection\Microsoft.Terminal.TerminalConnection.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference> -->
+    <!--     <Reference Include="Microsoft.Terminal.Control">
+      <HintPath>$(OpenConsoleCommonOutDir)Microsoft.Terminal.Control\Microsoft.Terminal.Control.winmd</HintPath>
+      <HintPath>..\..\bin\x64\debug\Microsoft.Terminal.Control\Microsoft.Terminal.Control.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference> -->
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="ExtensionUserControl.xaml">
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+
+    <Import Project="..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.targets')" />
+    <Import Project="..\..\packages\Microsoft.Web.WebView2.1.0.1661.34\build\native\Microsoft.Web.WebView2.targets" Condition="Exists('..\..\packages\Microsoft.Web.WebView2.1.0.1661.34\build\native\Microsoft.Web.WebView2.targets')" />
+
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>

scratch/ExtensionComponent/ExtensionComponent.vcxproj.filters

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Resources">
+      <UniqueIdentifier>accd3aa8-1ba0-4223-9bbe-0c431709210b</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tga;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+    <Filter Include="Generated Files">
+      <UniqueIdentifier>{926ab91d-31b4-48c3-b9a4-e681349f27f0}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp" />
+    <ClCompile Include="Class.cpp" />
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="Class.idl" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="ExtensionComponent.def" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="PropertySheet.props" />
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="readme.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="ExtensionUserControl.xaml" />
+  </ItemGroup>
+</Project>

scratch/ExtensionComponent/ExtensionUserControl.idl

@@ -0,0 +1,8 @@
+namespace ExtensionComponent
+{
+    [default_interface] runtimeclass ExtensionUserControl : Windows.UI.Xaml.Controls.UserControl
+    {
+        ExtensionUserControl();
+        Int32 MyValue;
+    }
+}

scratch/ExtensionComponent/ExtensionUserControl.xaml

@@ -0,0 +1,18 @@
+<UserControl x:Class="ExtensionComponent.ExtensionUserControl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:local="using:ExtensionComponent"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             d:DesignHeight="300"
+             d:DesignWidth="400"
+             mc:Ignorable="d">
+
+    <Grid>
+        <Button x:Name="Button1"
+                Margin="10,10,0,0"
+                HorizontalAlignment="Left"
+                VerticalAlignment="Top"
+                Content="{x:Bind MyValue, Mode=OneWay}" />
+    </Grid>
+</UserControl>

scratch/ExtensionComponent/ExtensionUserControl.xaml.cpp

@@ -0,0 +1,29 @@
+//
+// ExtensionUserControl.xaml.cpp
+// Implementation of the ExtensionUserControl class
+//
+
+#include "pch.h"
+#include "ExtensionUserControl.xaml.h"
+#include "ExtensionUserControl.g.cpp"
+
+
+
+// The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236
+
+namespace winrt::ExtensionComponent::implementation
+{
+
+    int32_t ExtensionUserControl::MyValue()
+    {
+        return _MyValue;
+    };
+    void ExtensionUserControl::MyValue(const int32_t& value)
+    {
+        if (_MyValue != value)
+        {
+            _MyValue = value;
+            _PropertyChanged(*this, winrt::Windows::UI::Xaml::Data::PropertyChangedEventArgs{ L"MyValue" });
+        }
+    };
+}

scratch/ExtensionComponent/ExtensionUserControl.xaml.h

@@ -0,0 +1,41 @@
+//
+// ExtensionUserControl.xaml.h
+// Declaration of the ExtensionUserControl class
+//
+
+#pragma once
+
+#include "ExtensionUserControl.g.h"
+
+namespace winrt::ExtensionComponent::implementation
+{
+    struct ExtensionUserControl : ExtensionUserControlT<ExtensionUserControl>
+    {
+        ExtensionUserControl() = default;
+
+    public:
+        // and an observable "MyValue" property
+        int32_t MyValue();
+        void MyValue(const int32_t& value);
+
+        winrt::event_token PropertyChanged(winrt::Windows::UI::Xaml::Data::PropertyChangedEventHandler const& handler)
+        {
+            return _PropertyChanged.add(handler);
+        }
+        void PropertyChanged(winrt::event_token const& token) noexcept
+        {
+            _PropertyChanged.remove(token);
+        }
+
+    private:
+        int32_t _MyValue{ 10 };
+        winrt::event<winrt::Windows::UI::Xaml::Data::PropertyChangedEventHandler> _PropertyChanged;
+    };
+}
+
+namespace winrt::ExtensionComponent::factory_implementation
+{
+    struct ExtensionUserControl : ExtensionUserControlT<ExtensionUserControl, implementation::ExtensionUserControl>
+    {
+    };
+}

scratch/ExtensionComponent/PropertySheet.props

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets" />
+  <PropertyGroup Label="UserMacros" />
+  <!--
+    To customize common C++/WinRT project properties: 
+    * right-click the project node
+    * expand the Common Properties item
+    * select the C++/WinRT property page
+
+    For more advanced scenarios, and complete documentation, please see:
+    https://github.com/Microsoft/cppwinrt/tree/master/nuget 
+    -->
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+</Project>

scratch/ExtensionComponent/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.230207.1" targetFramework="native" />
+</packages>

scratch/ExtensionComponent/pch.cpp

@@ -0,0 +1 @@
+#include "pch.h"

scratch/ExtensionComponent/pch.h

@@ -0,0 +1,16 @@
+#pragma once
+#include <unknwn.h>
+#include <winrt/Windows.Foundation.h>
+#include <winrt/Windows.Foundation.Collections.h>
+#include <winrt/Windows.UI.Xaml.h>
+#include <winrt/Windows.UI.Xaml.Data.h>
+#include <winrt/Windows.UI.Xaml.Media.h>
+#include <winrt/Windows.UI.Xaml.Controls.h>
+#include <winrt/Windows.UI.Xaml.Controls.Primitives.h>
+
+#include <winrt/Microsoft.UI.Xaml.Controls.h>
+#include <winrt/Microsoft.UI.Xaml.Controls.Primitives.h>
+#include <winrt/Microsoft.UI.Xaml.XamlTypeInfo.h>
+#include <winrt/Microsoft.Web.WebView2.Core.h>
+
+#include <winrt/SampleExtensions.h>

scratch/ExtensionComponent/readme.txt

@@ -0,0 +1,23 @@
+========================================================================
+    C++/WinRT ExtensionComponent Project Overview
+========================================================================
+
+This project demonstrates how to get started authoring Windows Runtime 
+classes directly with standard C++, using the C++/WinRT SDK component 
+to generate implementation headers from interface (IDL) files.  The
+generated Windows Runtime component binary and WinMD files should then
+be bundled with the Universal Windows Platform (UWP) app consuming them.
+
+Steps:
+1. Create an interface (IDL) file to define your Windows Runtime class, 
+    its default interface, and any other interfaces it implements.
+2. Build the project once to generate module.g.cpp, module.h.cpp, and
+    implementation templates under the "Generated Files" folder, as 
+    well as skeleton class definitions under "Generated Files\sources".  
+3. Use the skeleton class definitions for reference to implement your
+    Windows Runtime classes.
+
+========================================================================
+Learn more about C++/WinRT here:
+http://aka.ms/cppwinrt/
+========================================================================

scratch/ExtensionHost/App.cpp

@@ -0,0 +1,118 @@
+#include "pch.h"
+
+#include "App.h"
+#include "MainPage.h"
+
+using namespace winrt;
+using namespace Windows::ApplicationModel;
+using namespace Windows::ApplicationModel::Activation;
+using namespace Windows::Foundation;
+using namespace Windows::UI::Xaml;
+using namespace Windows::UI::Xaml::Controls;
+using namespace Windows::UI::Xaml::Navigation;
+using namespace ExtensionHost;
+using namespace ExtensionHost::implementation;
+
+/// <summary>
+/// Creates the singleton application object.  This is the first line of authored code
+/// executed, and as such is the logical equivalent of main() or WinMain().
+/// </summary>
+App::App()
+{
+    Suspending({ this, &App::OnSuspending });
+
+#if defined _DEBUG && !defined DISABLE_XAML_GENERATED_BREAK_ON_UNHANDLED_EXCEPTION
+    UnhandledException([this](IInspectable const&, UnhandledExceptionEventArgs const& e)
+    {
+        if (IsDebuggerPresent())
+        {
+            auto errorMessage = e.Message();
+            __debugbreak();
+        }
+    });
+#endif
+}
+
+/// <summary>
+/// Invoked when the application is launched normally by the end user.  Other entry points
+/// will be used such as when the application is launched to open a specific file.
+/// </summary>
+/// <param name="e">Details about the launch request and process.</param>
+void App::OnLaunched(LaunchActivatedEventArgs const& e)
+{
+    Frame rootFrame{ nullptr };
+    auto content = Window::Current().Content();
+    if (content)
+    {
+        rootFrame = content.try_as<Frame>();
+    }
+
+    // Do not repeat app initialization when the Window already has content,
+    // just ensure that the window is active
+    if (rootFrame == nullptr)
+    {
+        // Create a Frame to act as the navigation context and associate it with
+        // a SuspensionManager key
+        rootFrame = Frame();
+
+        rootFrame.NavigationFailed({ this, &App::OnNavigationFailed });
+
+        if (e.PreviousExecutionState() == ApplicationExecutionState::Terminated)
+        {
+            // Restore the saved session state only when appropriate, scheduling the
+            // final launch steps after the restore is complete
+        }
+
+        if (e.PrelaunchActivated() == false)
+        {
+            if (rootFrame.Content() == nullptr)
+            {
+                // When the navigation stack isn't restored navigate to the first page,
+                // configuring the new page by passing required information as a navigation
+                // parameter
+                rootFrame.Navigate(xaml_typename<ExtensionHost::MainPage>(), box_value(e.Arguments()));
+            }
+            // Place the frame in the current Window
+            Window::Current().Content(rootFrame);
+            // Ensure the current window is active
+            Window::Current().Activate();
+        }
+    }
+    else
+    {
+        if (e.PrelaunchActivated() == false)
+        {
+            if (rootFrame.Content() == nullptr)
+            {
+                // When the navigation stack isn't restored navigate to the first page,
+                // configuring the new page by passing required information as a navigation
+                // parameter
+                rootFrame.Navigate(xaml_typename<ExtensionHost::MainPage>(), box_value(e.Arguments()));
+            }
+            // Ensure the current window is active
+            Window::Current().Activate();
+        }
+    }
+}
+
+/// <summary>
+/// Invoked when application execution is being suspended.  Application state is saved
+/// without knowing whether the application will be terminated or resumed with the contents
+/// of memory still intact.
+/// </summary>
+/// <param name="sender">The source of the suspend request.</param>
+/// <param name="e">Details about the suspend request.</param>
+void App::OnSuspending([[maybe_unused]] IInspectable const& sender, [[maybe_unused]] SuspendingEventArgs const& e)
+{
+    // Save application state and stop any background activity
+}
+
+/// <summary>
+/// Invoked when Navigation to a certain page fails
+/// </summary>
+/// <param name="sender">The Frame which failed navigation</param>
+/// <param name="e">Details about the navigation failure</param>
+void App::OnNavigationFailed(IInspectable const&, NavigationFailedEventArgs const& e)
+{
+    throw hresult_error(E_FAIL, hstring(L"Failed to load Page ") + e.SourcePageType().Name);
+}

scratch/ExtensionHost/App.h

@@ -0,0 +1,13 @@
+#pragma once
+#include "App.xaml.g.h"
+
+namespace winrt::ExtensionHost::implementation
+{
+    struct App : AppT<App>
+    {
+        App();
+        void OnLaunched(Windows::ApplicationModel::Activation::LaunchActivatedEventArgs const&);
+        void OnSuspending(IInspectable const&, Windows::ApplicationModel::SuspendingEventArgs const&);
+        void OnNavigationFailed(IInspectable const&, Windows::UI::Xaml::Navigation::NavigationFailedEventArgs const&);
+    };
+}

scratch/ExtensionHost/App.idl

@@ -0,0 +1,3 @@
+namespace ExtensionHost
+{
+}

scratch/ExtensionHost/App.xaml

@@ -0,0 +1,4 @@
+<Application x:Class="ExtensionHost.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="using:ExtensionHost" />

scratch/ExtensionHost/ExtensionHost.def

@@ -0,0 +1,3 @@
+EXPORTS
+DllCanUnloadNow = WINRT_CanUnloadNow                    PRIVATE
+DllGetActivationFactory = WINRT_GetActivationFactory    PRIVATE

scratch/ExtensionHost/ExtensionHost.manifest

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+    <file name="ExtensionHost.exe" hashalg="SHA1">
+        <activatableClass name="ExtensionHost.FooClass" threadingModel="both" xmlns="urn:schemas-microsoft-com:winrt.v1"></activatableClass>
+    </file>
+</assembly>

scratch/ExtensionHost/ExtensionHost.vcxproj

@@ -0,0 +1,242 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <CppWinRTOptimized>true</CppWinRTOptimized>
+    <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
+    <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
+    <MinimalCoreWin>true</MinimalCoreWin>
+    <ProjectGuid>{1a505edb-0961-431a-8de5-31df1a22b892}</ProjectGuid>
+    <ProjectName>ExtensionHost</ProjectName>
+    <RootNamespace>ExtensionHost</RootNamespace>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <MinimumVisualStudioVersion>15.0</MinimumVisualStudioVersion>
+    <AppContainerApplication>true</AppContainerApplication>
+    <ApplicationType>Windows Store</ApplicationType>
+    <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
+    <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.22621.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformMinVersion>10.0.18362.0</WindowsTargetPlatformMinVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+
+  <Import Project="..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.props" Condition="Exists('..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.props')" />
+
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM">
+      <Configuration>Release</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '16.0'">v142</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '15.0'">v141</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '14.0'">v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="PropertySheet.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <PrecompiledHeaderOutputFile>$(IntDir)pch.pch</PrecompiledHeaderOutputFile>
+      <WarningLevel>Level4</WarningLevel>
+      <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
+      <PreprocessorDefinitions>WIN32_LEAN_AND_MEAN;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <GenerateWindowsMetadata>false</GenerateWindowsMetadata>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="App.h">
+      <DependentUpon>App.xaml</DependentUpon>
+    </ClInclude>
+    <ClInclude Include="FooClass.h">
+      <DependentUpon>FooClass.idl</DependentUpon>
+    </ClInclude>
+    <ClInclude Include="MainPage.h">
+      <DependentUpon>MainPage.xaml</DependentUpon>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Page Include="MainPage.xaml">
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+  </ItemGroup>
+  <ItemGroup>
+    <Image Include="Assets\LockScreenLogo.scale-200.png" />
+    <Image Include="Assets\SplashScreen.scale-200.png" />
+    <Image Include="Assets\Square150x150Logo.scale-200.png" />
+    <Image Include="Assets\Square44x44Logo.scale-200.png" />
+    <Image Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Image Include="Assets\StoreLogo.png" />
+    <Image Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader>Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="App.cpp">
+      <DependentUpon>App.xaml</DependentUpon>
+    </ClCompile>
+    <ClCompile Include="MainPage.cpp">
+      <DependentUpon>MainPage.xaml</DependentUpon>
+    </ClCompile>
+    <ClCompile Include="FooClass.cpp">
+      <DependentUpon>FooClass.idl</DependentUpon>
+    </ClCompile>
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="App.idl">
+      <DependentUpon>App.xaml</DependentUpon>
+    </Midl>
+    <Midl Include="MainPage.idl">
+      <DependentUpon>MainPage.xaml</DependentUpon>
+    </Midl>
+    <Midl Include="FooClass.idl">
+    </Midl>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="ExtensionHost.def" />
+    <None Include="packages.config" />
+    <None Include="PropertySheet.props" />
+    <Text Include="readme.txt">
+      <DeploymentContent>false</DeploymentContent>
+    </Text>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\ExtensionComponent\ExtensionComponent.vcxproj">
+      <Project>{e1cf4226-b94e-4a86-b62f-02e1a2eb3a0d}</Project>
+    </ProjectReference>
+  </ItemGroup>
+
+    <!-- ========================== Other References ========================= -->
+  <ItemGroup>
+    <Reference Include="SampleExtensions">
+      <!-- <HintPath>$(OpenConsoleCommonOutDir)\SampleAppLib\SampleApp.winmd</HintPath> -->
+      <!-- <HintPath>..\..\bin\x64\Debug\SampleAppLib\SampleApp.winmd</HintPath> -->
+      <HintPath>..\..\x64\Debug\SampleExtensions\SampleExtensions.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference>
+<!--     <Reference Include="Microsoft.Terminal.Core">
+      <HintPath>$(OpenConsoleCommonOutDir)TerminalCore\Microsoft.Terminal.Core.winmd</HintPath>
+      <HintPath>..\..\bin\x64\debug\TerminalCore\Microsoft.Terminal.Core.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference>
+    <Reference Include="Microsoft.Terminal.TerminalConnection">
+      <HintPath>$(OpenConsoleCommonOutDir)TerminalConnection\Microsoft.Terminal.TerminalConnection.winmd</HintPath>
+      <HintPath>..\..\bin\x64\debug\TerminalConnection\Microsoft.Terminal.TerminalConnection.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference> -->
+<!--     <Reference Include="Microsoft.Terminal.Control">
+      <HintPath>$(OpenConsoleCommonOutDir)Microsoft.Terminal.Control\Microsoft.Terminal.Control.winmd</HintPath>
+      <HintPath>..\..\bin\x64\debug\Microsoft.Terminal.Control\Microsoft.Terminal.Control.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference> -->
+  </ItemGroup>
+
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+
+    <Import Project="..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('..\..\packages\Microsoft.UI.Xaml.2.8.3\build\native\Microsoft.UI.Xaml.targets')" />
+    <Import Project="..\..\packages\Microsoft.Web.WebView2.1.0.1661.34\build\native\Microsoft.Web.WebView2.targets" Condition="Exists('..\..\packages\Microsoft.Web.WebView2.1.0.1661.34\build\native\Microsoft.Web.WebView2.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+  <ItemDefinitionGroup>
+    <!-- Definition the program database type has to come after Microsoft.Cpp.props or it will be
+         rewritten to /ZI (edit-and-continue) type every time. -->
+    <ClCompile>
+      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+    </ClCompile>
+    <Link>
+      <AdditionalDependencies>onecoreuap_apiset.lib;d3dcompiler.lib;dwmapi.lib;uxtheme.lib;shlwapi.lib;ntdll.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+</Project>

scratch/ExtensionHost/ExtensionHost.vcxproj.filters

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Page Include="MainPage.xaml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="App.idl" />
+    <Midl Include="MainPage.idl" />
+    <Midl Include="FooClass.idl" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp" />
+    <ClCompile Include="App.cpp" />
+    <ClCompile Include="MainPage.cpp" />
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Image Include="Assets\Wide310x150Logo.scale-200.png">
+      <Filter>Assets</Filter>
+    </Image>
+    <Image Include="Assets\StoreLogo.png">
+      <Filter>Assets</Filter>
+    </Image>
+    <Image Include="Assets\Square150x150Logo.scale-200.png">
+      <Filter>Assets</Filter>
+    </Image>
+    <Image Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png">
+      <Filter>Assets</Filter>
+    </Image>
+    <Image Include="Assets\Square44x44Logo.scale-200.png">
+      <Filter>Assets</Filter>
+    </Image>
+    <Image Include="Assets\SplashScreen.scale-200.png">
+      <Filter>Assets</Filter>
+    </Image>
+    <Image Include="Assets\LockScreenLogo.scale-200.png">
+      <Filter>Assets</Filter>
+    </Image>
+  </ItemGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest" />
+  </ItemGroup>
+  <ItemGroup>
+    <Filter Include="Assets">
+      <UniqueIdentifier>{e48dc53e-40b1-40cb-970a-f89935452892}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="PropertySheet.props" />
+    <None Include="packages.config" />
+    <None Include="ExtensionHost.def" />
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="readme.txt" />
+  </ItemGroup>
+</Project>

scratch/ExtensionHost/FooClass.cpp

@@ -0,0 +1,19 @@
+#include "pch.h"
+#include "FooClass.h"
+#include "FooClass.g.cpp"
+
+using namespace winrt;
+using namespace Windows::UI::Xaml;
+
+namespace winrt::ExtensionHost::implementation
+{
+    int32_t FooClass::MyProperty()
+    {
+        return _MyProperty;
+    }
+
+    void FooClass::MyProperty(int32_t value)
+    {
+        _MyProperty = value;
+    }
+}

scratch/ExtensionHost/FooClass.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "FooClass.g.h"
+
+namespace winrt::ExtensionHost::implementation
+{
+    struct FooClass : FooClassT<FooClass>
+    {
+        FooClass() = default;
+
+        int32_t MyProperty();
+        void MyProperty(int32_t value);
+
+    private:
+        int32_t _MyProperty{ 42 };
+    };
+}
+
+namespace winrt::ExtensionHost::factory_implementation
+{
+    struct FooClass : FooClassT<FooClass, implementation::FooClass>
+    {
+    };
+}

scratch/ExtensionHost/FooClass.idl

@@ -0,0 +1,9 @@
+namespace ExtensionHost
+{
+    [default_interface]
+    runtimeclass FooClass 
+    {
+        FooClass();
+        Int32 MyProperty;
+    }
+}

scratch/ExtensionHost/MainPage.cpp

@@ -0,0 +1,98 @@
+#include "pch.h"
+#include "MainPage.h"
+#include "MainPage.g.cpp"
+#include "../../packages/Microsoft.Windows.ImplementationLibrary.1.0.220201.1/include/wil/win32_helpers.h"
+
+#include <appmodel.h>
+#include <Windows.ApplicationModel.AppExtensions.h>
+#include <winrt/ExtensionHost.h>
+#include "FooClass.h"
+#include <winrt/ExtensionComponent.h>
+
+using namespace winrt;
+using namespace Windows::UI::Xaml;
+
+namespace winrt::ExtensionHost::implementation
+{
+    int32_t MainPage::MyProperty()
+    {
+        throw hresult_not_implemented();
+    }
+
+    void MainPage::MyProperty(int32_t /* value */)
+    {
+        throw hresult_not_implemented();
+    }
+
+    static winrt::fire_and_forget _lookupCatalog() noexcept
+    {
+        co_await winrt::resume_background();
+        try
+        {
+            auto cat = winrt::Windows::ApplicationModel::AppExtensions::AppExtensionCatalog::Open(winrt::hstring{ L"microsoft.terminal.scratch" });
+            auto findOperation{ cat.FindAllAsync() };
+            auto extnList = findOperation.get();
+            for (const auto& extn : extnList)
+            {
+                extn;
+            }
+        }
+        catch (...)
+        {
+            // LOG_CAUGHT_EXCEPTION();
+            co_return;
+        }
+
+        /*ComPtr<IAppExtensionCatalogStatics> catalogStatics;
+        RETURN_IF_FAILED(Windows::Foundation::GetActivationFactory(HStringReference(RuntimeClass_Windows_ApplicationModel_AppExtensions_AppExtensionCatalog).Get(), &catalogStatics));
+
+        ComPtr<IAppExtensionCatalog> catalog;
+        RETURN_IF_FAILED(catalogStatics->Open(HStringReference(extensionName).Get(), &catalog));
+
+        ComPtr<IAsyncOperation<IVectorView<AppExtension*>*>> findOperation;
+        RETURN_IF_FAILED(catalog->FindAllAsync(&findOperation));
+
+        ComPtr<IVectorView<AppExtension*>> extensionList;
+        RETURN_IF_FAILED(wil::wait_for_completion_nothrow(findOperation.Get(), &extensionList));
+
+        UINT extensionCount;
+        RETURN_IF_FAILED(extensionList->get_Size(&extensionCount));
+        for (UINT index = 0; index < extensionCount; index++)
+        {
+        }*/
+
+        co_return;
+    }
+
+
+    void MainPage::ClickHandler(IInspectable const&, RoutedEventArgs const&)
+    {
+        myButton().Content(box_value(L"Clicked"));
+
+        auto hr = S_OK;
+
+        _lookupCatalog();
+        LOG_IF_FAILED(hr);
+        if (FAILED(hr))
+            return;
+
+        PWSTR id;
+        hr = TryCreatePackageDependency(nullptr, L"pfn", PACKAGE_VERSION{}, PackageDependencyProcessorArchitectures_None, PackageDependencyLifetimeKind_Process, nullptr, CreatePackageDependencyOptions_None, &id);
+        LOG_IF_FAILED(hr);
+        if (FAILED(hr))
+            return;
+
+        PACKAGEDEPENDENCY_CONTEXT ctx;
+        PWSTR packageFullName;
+        hr = AddPackageDependency(id, 1, AddPackageDependencyOptions_None, &ctx, &packageFullName);
+        LOG_IF_FAILED(hr);
+        if (FAILED(hr))
+            return;
+
+        winrt::ExtensionHost::FooClass myFoo{};
+        winrt::ExtensionComponent::ExtensionClass bar;
+        auto wat = bar.MyProperty();
+        wat *= 2;
+        myFoo.MyProperty(wat);
+    }
+}

scratch/ExtensionHost/MainPage.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include "MainPage.g.h"
+
+namespace winrt::ExtensionHost::implementation
+{
+    struct MainPage : MainPageT<MainPage>
+    {
+        MainPage()
+        {
+            // Xaml objects should not call InitializeComponent during construction.
+            // See https://github.com/microsoft/cppwinrt/tree/master/nuget#initializecomponent
+        }
+
+        int32_t MyProperty();
+        void MyProperty(int32_t value);
+
+        void ClickHandler(Windows::Foundation::IInspectable const& sender, Windows::UI::Xaml::RoutedEventArgs const& args);
+    };
+}
+
+namespace winrt::ExtensionHost::factory_implementation
+{
+    struct MainPage : MainPageT<MainPage, implementation::MainPage>
+    {
+    };
+}

scratch/ExtensionHost/MainPage.idl

@@ -0,0 +1,9 @@
+namespace ExtensionHost
+{
+    [default_interface]
+    runtimeclass MainPage : Windows.UI.Xaml.Controls.Page
+    {
+        MainPage();
+        Int32 MyProperty;
+    }
+}

scratch/ExtensionHost/MainPage.xaml

@@ -0,0 +1,17 @@
+<Page x:Class="ExtensionHost.MainPage"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+      xmlns:local="using:ExtensionHost"
+      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+      mc:Ignorable="d">
+
+    <StackPanel HorizontalAlignment="Center"
+                VerticalAlignment="Center"
+                Orientation="Horizontal">
+        <Button x:Name="myButton"
+                Click="ClickHandler">
+            Click Me
+        </Button>
+    </StackPanel>
+</Page>

scratch/ExtensionHost/Package.appxmanifest

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:com="http://schemas.microsoft.com/appx/manifest/com/windows10"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
+  xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
+  xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5"
+  xmlns:uap7="http://schemas.microsoft.com/appx/manifest/uap/windows10/7"
+  xmlns:uap10="http://schemas.microsoft.com/appx/manifest/uap/windows10/10"
+  xmlns:uap15="http://schemas.microsoft.com/appx/manifest/uap/windows10/15"
+  xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
+  xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
+  xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
+  xmlns:desktop6="http://schemas.microsoft.com/appx/manifest/desktop/windows10/6"
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  xmlns:virtualization="http://schemas.microsoft.com/appx/manifest/virtualization/windows10"
+  IgnorableNamespaces="uap mp rescap uap3 uap10 uap15 desktop6 virtualization">
+
+  <Identity
+    Name="b04bb6c4-61d6-4fc2-993f-b17d846d8e64"
+    Publisher="CN=migrie"
+    Version="1.0.0.0" />
+  <mp:PhoneIdentity PhoneProductId="b04bb6c4-61d6-4fc2-993f-b17d846d8e64" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>ExtensionHost</DisplayName>
+    <PublisherDisplayName>migrie</PublisherDisplayName>
+    <Logo>Assets\StoreLogo.png</Logo>
+    <uap15:DependencyTarget>true</uap15:DependencyTarget>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.22621.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate" />
+  </Resources>
+
+  <Applications>
+
+    <!-- <Application Id="App" Executable="$targetnametoken$.exe" EntryPoint="ExtensionHost.App" uap10:TrustLevel="mediumIL"> -->
+    <Application Id="App" Executable="$targetnametoken$.exe" EntryPoint="ExtensionHost.App">
+      <uap:VisualElements DisplayName="ExtensionHost" Description="Project for a single page C++/WinRT Universal Windows Platform (UWP) app with no predefined layout"
+        Square150x150Logo="Assets\Square150x150Logo.png" Square44x44Logo="Assets\Square44x44Logo.png" BackgroundColor="transparent">
+        <uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png">
+        </uap:DefaultTile>
+        <uap:SplashScreen Image="Assets\SplashScreen.png" />
+      </uap:VisualElements>
+
+
+      <Extensions>
+        <uap3:Extension Category="windows.appExtension">
+            <uap3:AppExtension Name="com.terminal.scratch"
+                Id="ScratchIslandApp"
+                DisplayName="Scratch Island App"
+                Description="This is my test extension"
+                PublicFolder="Public">
+                <uap3:Properties>
+                    <Implementation>ExtensionComponent.ExtensionClass</Implementation>
+                </uap3:Properties>
+            </uap3:AppExtension>
+        </uap3:Extension>
+      </Extensions>
+
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <Capability Name="internetClient" />
+    <rescap:Capability Name="runFullTrust" />
+  </Capabilities>
+
+</Package>

scratch/ExtensionHost/PropertySheet.props

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets" />
+  <PropertyGroup Label="UserMacros" />
+  <!--
+    To customize common C++/WinRT project properties: 
+    * right-click the project node
+    * expand the Common Properties item
+    * select the C++/WinRT property page
+
+    For more advanced scenarios, and complete documentation, please see:
+    https://github.com/Microsoft/cppwinrt/tree/master/nuget 
+    -->
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+</Project>

scratch/ExtensionHost/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.230207.1" targetFramework="native" />
+</packages>

scratch/ExtensionHost/pch.cpp

@@ -0,0 +1 @@
+#include "pch.h"

scratch/ExtensionHost/pch.h

@@ -0,0 +1,27 @@
+#pragma once
+#include <windows.h>
+#include <unknwn.h>
+#include <restrictederrorinfo.h>
+#include <hstring.h>
+#include <winrt/Windows.Foundation.h>
+#include <winrt/Windows.Foundation.Collections.h>
+#include <winrt/Windows.ApplicationModel.Activation.h>
+#include <winrt/Windows.UI.Xaml.h>
+#include <winrt/Windows.UI.Xaml.Controls.h>
+#include <winrt/Windows.UI.Xaml.Controls.Primitives.h>
+#include <winrt/Windows.UI.Xaml.Data.h>
+#include <winrt/Windows.UI.Xaml.Interop.h>
+#include <winrt/Windows.UI.Xaml.Markup.h>
+#include <winrt/Windows.UI.Xaml.Navigation.h>
+
+#include <winrt/Windows.ApplicationModel.h>
+#include <winrt/Windows.ApplicationModel.AppExtensions.h>
+
+#include <appmodel.h>
+
+#include <winrt/Microsoft.UI.Xaml.Controls.h>
+#include <winrt/Microsoft.UI.Xaml.Controls.Primitives.h>
+#include <winrt/Microsoft.UI.Xaml.XamlTypeInfo.h>
+#include <winrt/Microsoft.Web.WebView2.Core.h>
+
+#include <winrt/ExtensionComponent.h>

scratch/ExtensionHost/readme.txt

@@ -0,0 +1,23 @@
+========================================================================
+    C++/WinRT ExtensionHost Project Overview
+========================================================================
+
+This project demonstrates how to get started writing XAML apps directly
+with standard C++, using the C++/WinRT SDK component and XAML compiler 
+support to generate implementation headers from interface (IDL) files.
+These headers can then be used to implement the local Windows Runtime 
+classes referenced in the app's XAML pages.
+
+Steps:
+1. Create an interface (IDL) file to define any local Windows Runtime 
+    classes referenced in the app's XAML pages.
+2. Build the project once to generate implementation templates under 
+    the "Generated Files" folder, as well as skeleton class definitions 
+    under "Generated Files\sources".  
+3. Use the skeleton class definitions for reference to implement your
+    Windows Runtime classes.
+
+========================================================================
+Learn more about C++/WinRT here:
+http://aka.ms/cppwinrt/
+========================================================================

scratch/SampleExtensions/IExtension.idl

@@ -0,0 +1,19 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+namespace SampleExtensions
+{
+    [default_interface]
+    runtimeclass SendInputArgs {
+        SendInputArgs(String input);
+        String Input { get; };
+    };
+
+    interface IExtension
+    {
+        Int32 DoTheThing();
+        Windows.UI.Xaml.FrameworkElement PaneContent { get; };
+        event Windows.Foundation.TypedEventHandler<Object, SendInputArgs> SendInputRequested;
+
+    };
+}

scratch/SampleExtensions/PropertySheet.props

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets" />
+  <PropertyGroup Label="UserMacros" />
+  <!--
+    To customize common C++/WinRT project properties: 
+    * right-click the project node
+    * expand the Common Properties item
+    * select the C++/WinRT property page
+
+    For more advanced scenarios, and complete documentation, please see:
+    https://github.com/Microsoft/cppwinrt/tree/master/nuget 
+    -->
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+</Project>

scratch/SampleExtensions/SampleExtensions.def

@@ -0,0 +1,3 @@
+EXPORTS
+DllCanUnloadNow = WINRT_CanUnloadNow                    PRIVATE
+DllGetActivationFactory = WINRT_GetActivationFactory    PRIVATE

scratch/SampleExtensions/SampleExtensions.vcxproj

@@ -0,0 +1,158 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <CppWinRTOptimized>true</CppWinRTOptimized>
+    <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
+    <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
+    <MinimalCoreWin>true</MinimalCoreWin>
+    <ProjectGuid>{cf317032-4253-4726-b4f5-6d5cea2e75d4}</ProjectGuid>
+    <ProjectName>SampleExtensions</ProjectName>
+    <RootNamespace>SampleExtensions</RootNamespace>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
+    <AppContainerApplication>true</AppContainerApplication>
+    <ApplicationType>Windows Store</ApplicationType>
+    <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
+    <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.22000.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformMinVersion>10.0.22000.0</WindowsTargetPlatformMinVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM">
+      <Configuration>Release</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '16.0'">v142</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '15.0'">v141</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '14.0'">v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <GenerateManifest>false</GenerateManifest>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <DesktopCompatible>true</DesktopCompatible>
+  </PropertyGroup>
+  <Import Project="$(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>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="PropertySheet.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <PrecompiledHeaderOutputFile>$(IntDir)pch.pch</PrecompiledHeaderOutputFile>
+      <WarningLevel>Level4</WarningLevel>
+      <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
+      <PreprocessorDefinitions>_WINRT_DLL;WIN32_LEAN_AND_MEAN;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateWindowsMetadata>false</GenerateWindowsMetadata>
+      <ModuleDefinitionFile>SampleExtensions.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+    <ClInclude Include="SendInputArgs.h">
+      <DependentUpon>IExtension.idl</DependentUpon>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader>Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="SendInputArgs.cpp">
+      <DependentUpon>IExtension.idl</DependentUpon>
+    </ClCompile>
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="IExtension.idl" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="SampleExtensions.def" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="PropertySheet.props" />
+    <Text Include="readme.txt">
+      <DeploymentContent>false</DeploymentContent>
+    </Text>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.230207.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>

scratch/SampleExtensions/SampleExtensions.vcxproj.filters

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Resources">
+      <UniqueIdentifier>accd3aa8-1ba0-4223-9bbe-0c431709210b</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tga;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+    <Filter Include="Generated Files">
+      <UniqueIdentifier>{926ab91d-31b4-48c3-b9a4-e681349f27f0}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp" />
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="IExtension.idl" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="SampleExtensions.def" />
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="PropertySheet.props" />
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="readme.txt" />
+  </ItemGroup>
+</Project>

scratch/SampleExtensions/SendInputArgs.cpp

@@ -0,0 +1,7 @@
+#include "pch.h"
+#include "SendInputArgs.h"
+#include "SendInputArgs.g.cpp"
+
+namespace winrt::SampleExtensions::implementation
+{
+}

scratch/SampleExtensions/SendInputArgs.h

@@ -0,0 +1,24 @@
+#pragma once
+#include "SendInputArgs.g.h"
+
+namespace winrt::SampleExtensions::implementation
+{
+    struct SendInputArgs : SendInputArgsT<SendInputArgs>
+    {
+        SendInputArgs() = default;
+        SendInputArgs(winrt::hstring input) :
+            _Input{ input } {};
+
+        winrt::hstring Input() { return _Input; }
+
+    private:
+        winrt::hstring _Input;
+    };
+}
+
+namespace winrt::SampleExtensions::factory_implementation
+{
+    struct SendInputArgs : SendInputArgsT<SendInputArgs, implementation::SendInputArgs>
+    {
+    };
+}

scratch/SampleExtensions/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.230207.1" targetFramework="native" />
+</packages>

scratch/SampleExtensions/pch.cpp

@@ -0,0 +1 @@
+#include "pch.h"

scratch/SampleExtensions/pch.h

@@ -0,0 +1,4 @@
+#pragma once
+#include <unknwn.h>
+#include <winrt/Windows.Foundation.h>
+#include <winrt/Windows.Foundation.Collections.h>

scratch/SampleExtensions/readme.txt

@@ -0,0 +1,23 @@
+========================================================================
+    C++/WinRT SampleExtensions Project Overview
+========================================================================
+
+This project demonstrates how to get started authoring Windows Runtime 
+classes directly with standard C++, using the C++/WinRT SDK component 
+to generate implementation headers from interface (IDL) files.  The
+generated Windows Runtime component binary and WinMD files should then
+be bundled with the Universal Windows Platform (UWP) app consuming them.
+
+Steps:
+1. Create an interface (IDL) file to define your Windows Runtime class, 
+    its default interface, and any other interfaces it implements.
+2. Build the project once to generate module.g.cpp, module.h.cpp, and
+    implementation templates under the "Generated Files" folder, as 
+    well as skeleton class definitions under "Generated Files\sources".  
+3. Use the skeleton class definitions for reference to implement your
+    Windows Runtime classes.
+
+========================================================================
+Learn more about C++/WinRT here:
+http://aka.ms/cppwinrt/
+========================================================================

scratch/ScratchIslandApp/Package/Package.appxmanifest

@@ -9,11 +9,13 @@
   xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
   xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5"
   xmlns:uap7="http://schemas.microsoft.com/appx/manifest/uap/windows10/7"
+  xmlns:uap10="http://schemas.microsoft.com/appx/manifest/uap/windows10/10"
+  xmlns:uap15="http://schemas.microsoft.com/appx/manifest/foundation/windows10/15"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
   xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
   xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
   xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
-  IgnorableNamespaces="uap mp rescap uap3">
+  IgnorableNamespaces="uap mp rescap uap3 uap10 uap15">
 
   <Identity
     Name="ScratchApplication"
@@ -24,6 +26,7 @@
     <DisplayName>Sample App</DisplayName>
     <PublisherDisplayName>A Lone Developer</PublisherDisplayName>
     <Logo>Images\StoreLogo.png</Logo>
+    <uap15:DependencyTarget>true</uap15:DependencyTarget>
   </Properties>
 
   <Dependencies>
@@ -57,6 +60,15 @@
         </uap:DefaultTile>
       </uap:VisualElements>
 
+      <Extensions>
+
+        <uap3:Extension Category="windows.appExtensionHost">
+          <uap3:AppExtensionHost>
+            <uap3:Name>com.terminal.scratch</uap3:Name>
+          </uap3:AppExtensionHost>
+        </uap3:Extension>
+      </Extensions>
+
     </Application>
   </Applications>
 

scratch/ScratchIslandApp/Package/Package.wapproj

@@ -1,7 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
+
+  <PropertyGroup Label="NuGet Dependencies">
+    <TerminalMUX>true</TerminalMUX>
+  </PropertyGroup>
   <Import Project="$(OpenConsoleDir)src\wap-common.build.pre.props" />
+  <Import Project="$(OpenConsoleDir)src\common.nugetversions.props" />
   <PropertyGroup Label="Configuration">
     <!--
     These two properties are very important!
@@ -46,6 +51,7 @@
   <Import Project="$(OpenConsoleDir)src\wap-common.build.post.props" />
   <ItemGroup>
     <ProjectReference Include="..\WindowExe\WindowExe.vcxproj" />
+    <ProjectReference Include="..\..\SampleExtensions\SampleExtensions.vcxproj" />
   </ItemGroup>
 
   <ItemGroup>
@@ -136,16 +142,6 @@
   <!-- **END VC LIBS HACK** -->
 
   <!-- This is required to get the package dependency in the AppXManifest. -->
-  <Import Project="..\..\..\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('..\..\..\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" />
-  <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.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets'))" />
-  </Target>
-
-
-
-
+  <Import Project="$(OpenConsoleDir)src\common.nugetversions.targets" />
   <Import Project="$(SolutionDir)build\rules\CollectWildcardResources.targets" />
 </Project>

scratch/ScratchIslandApp/SampleApp/App.xaml

@@ -19,7 +19,8 @@
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
                 <!--  Include the MUX Controls resources  -->
-                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
+                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls"
+                                       ControlsResourcesVersion="Version2" />
                 <ResourceDictionary>
 
                     <!--

scratch/ScratchIslandApp/SampleApp/IExtension.idl

@@ -0,0 +1,10 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+namespace SampleApp
+{    
+    interface IExtension
+    {
+        Int32 DoTheThing();
+    };
+}

scratch/ScratchIslandApp/SampleApp/MyPage.cpp

@@ -28,20 +28,23 @@ namespace winrt::SampleApp::implementation
     {
         auto settings = winrt::make_self<implementation::MySettings>();
 
-        auto connectionSettings{ TerminalConnection::ConptyConnection::CreateSettings(L"cmd.exe /k echo This TermControl is hosted in-proc...",
-                                                                                      winrt::hstring{},
-                                                                                      L"",
-                                                                                      nullptr,
-                                                                                      32,
-                                                                                      80,
-                                                                                      winrt::guid()) };
+        // auto connectionSettings{ TerminalConnection::ConptyConnection::CreateSettings(L"cmd.exe /k echo This TermControl is hosted in-proc...",
+        //                                                                               winrt::hstring{},
+        //                                                                               L"",
+        //                                                                               nullptr,
+        //                                                                               32,
+        //                                                                               80,
+        //                                                                               winrt::guid(),
+        //                                                                               winrt::guid()) };
 
         // "Microsoft.Terminal.TerminalConnection.ConptyConnection"
-        winrt::hstring myClass{ winrt::name_of<TerminalConnection::ConptyConnection>() };
-        TerminalConnection::ConnectionInformation connectInfo{ myClass, connectionSettings };
+        winrt::hstring myClass{ winrt::name_of<TerminalConnection::EchoConnection>() };
+        TerminalConnection::ConnectionInformation connectInfo{ myClass, nullptr };
 
-        TerminalConnection::ITerminalConnection conn{ TerminalConnection::ConnectionInformation::CreateConnection(connectInfo) };
-        Control::TermControl control{ *settings, *settings, conn };
+        _connection = TerminalConnection::ConnectionInformation::CreateConnection(connectInfo);
+        Control::TermControl control{ *settings, *settings, _connection };
+
+        // _connection.WriteInput(L"This is an in-proc echo connection!\r\n");
 
         InProcContent().Children().Append(control);
     }
@@ -58,4 +61,101 @@ namespace winrt::SampleApp::implementation
         return { L"Sample Application" };
     }
 
+    winrt::Windows::Foundation::IAsyncAction MyPage::_lookupCatalog() noexcept
+    {
+        co_await winrt::resume_background();
+        try
+        {
+            auto cat = winrt::Windows::ApplicationModel::AppExtensions::AppExtensionCatalog::Open(winrt::hstring{ L"com.terminal.scratch" });
+            auto findOperation{ cat.FindAllAsync() };
+            auto extnList = co_await findOperation;
+            for (const auto& extn : extnList)
+            {
+                DynamicDependency dynDep{};
+                auto hr = dynDep.Create(extn);
+
+                LOG_IF_FAILED(hr);
+                if (FAILED(hr))
+                {
+                    _connection.WriteInput(L"Failed to create extension dependency\r\n");
+                    continue;
+                }
+
+                auto f = dynDep.ResolveProperties();
+                bool result = co_await f;
+                if (result)
+                {
+                    _connection.WriteInput(L"Successfully added package dependency to ");
+                    _connection.WriteInput(dynDep._pfn);
+                    _connection.WriteInput(L"\r\n");
+
+                    this->_extensions.emplace_back(std::move(dynDep), nullptr);
+                }
+                else
+                {
+                    _connection.WriteInput(L"Didnt find impelentation for ");
+                    _connection.WriteInput(dynDep._pfn);
+                    _connection.WriteInput(L"\r\n");
+                }
+            }
+        }
+        catch (...)
+        {
+            // LOG_CAUGHT_EXCEPTION();
+            co_return;
+        }
+
+        co_return;
+    }
+
+    void MyPage::ClickHandler(Windows::Foundation::IInspectable const&, Windows::UI::Xaml::RoutedEventArgs const&)
+    {
+        _lookupCatalog();
+    }
+
+    winrt::fire_and_forget MyPage::SendInputHandler(Windows::Foundation::IInspectable const&, winrt::SampleExtensions::SendInputArgs args)
+    {
+        co_await winrt::resume_foreground(Dispatcher());
+        _connection.WriteInput(args.Input());
+        _connection.WriteInput(L"\r\n");
+    }
+
+    winrt::fire_and_forget MyPage::ActivateInstanceButtonHandler(Windows::Foundation::IInspectable const&, Windows::UI::Xaml::RoutedEventArgs const&)
+    {
+        if (_extensions.size() == 0)
+        {
+            co_await _lookupCatalog();
+        }
+        co_await winrt::resume_foreground(Dispatcher());
+
+        auto hr = S_OK;
+        Windows::Foundation::IInspectable foo{ nullptr };
+
+        auto& extension = _extensions.at(0);
+
+        // auto className = winrt::hstring{ L"ExtensionComponent.Class" };
+        auto className = extension.app._implementationClassName;
+        const auto nameForAbi = static_cast<HSTRING>(winrt::get_abi(className));
+        hr = RoActivateInstance(nameForAbi, (::IInspectable**)winrt::put_abi(foo));
+
+        if (foo)
+        {
+            if (const auto& ext{ foo.try_as<winrt::SampleExtensions::IExtension>() })
+            {
+                extension.instance = ext;
+
+                auto oneOhOne = extension.instance.DoTheThing();
+                oneOhOne++;
+
+                auto fwe = extension.instance.PaneContent();
+                OutOfProcContent().Children().Append(fwe);
+
+                extension.instance.SendInputRequested({ get_weak(), &MyPage::SendInputHandler });
+            }
+        }
+        else
+        {
+            _connection.WriteInput(L"Failed to activate instance \r\n");
+        }
+    }
 }

scratch/ScratchIslandApp/SampleApp/MyPage.h

@@ -8,6 +8,65 @@
 
 namespace winrt::SampleApp::implementation
 {
+    struct DynamicDependency
+    {
+        winrt::Windows::ApplicationModel::AppExtensions::AppExtension _extension{ nullptr };
+        PWSTR _dependencyId{ nullptr };
+        PACKAGEDEPENDENCY_CONTEXT _dependencyContext;
+        winrt::hstring _implementationClassName;
+        winrt::hstring _pfn;
+
+        HRESULT Create(const winrt::Windows::ApplicationModel::AppExtensions::AppExtension& extn)
+        {
+            _extension = extn;
+            _pfn = extn.Package().Id().FamilyName();
+            RETURN_IF_FAILED(TryCreatePackageDependency(nullptr,
+                                                        _pfn.c_str(),
+                                                        PACKAGE_VERSION{},
+                                                        PackageDependencyProcessorArchitectures_None,
+                                                        PackageDependencyLifetimeKind_Process,
+                                                        nullptr,
+                                                        CreatePackageDependencyOptions_None,
+                                                        &_dependencyId));
+            RETURN_IF_FAILED(AddPackageDependency(_dependencyId,
+                                                  1,
+                                                  AddPackageDependencyOptions_None,
+                                                  &_dependencyContext,
+                                                  nullptr));
+            return S_OK;
+        }
+        winrt::Windows::Foundation::IAsyncOperation<bool> ResolveProperties()
+        {
+            auto properties = co_await _extension.GetExtensionPropertiesAsync();
+            if (properties)
+            {
+                if (const auto& s{ properties.TryLookup(L"Implementation") })
+                {
+                    // s is another property set, so look it up in that instead
+                    if (const auto& asSet{ s.try_as<winrt::Windows::Foundation::Collections::IPropertySet>() })
+                    {
+                        _implementationClassName = asSet.TryLookup(L"#text").as<winrt::hstring>();
+                        co_return true;
+                    }
+                }
+            }
+            co_return false;
+        }
+        ~DynamicDependency() noexcept
+        {
+            //if (_dependencyContext)
+            //{
+            //    RemovePackageDependency(_dependencyContext);
+            //}
+        }
+    };
+
+    struct Extension
+    {
+        DynamicDependency app;
+        winrt::SampleExtensions::IExtension instance{ nullptr };
+    };
+
     struct MyPage : MyPageT<MyPage>
     {
     public:
@@ -17,8 +76,17 @@ namespace winrt::SampleApp::implementation
 
         hstring Title();
 
+        void ClickHandler(Windows::Foundation::IInspectable const& sender, Windows::UI::Xaml::RoutedEventArgs const& args);
+        winrt::fire_and_forget ActivateInstanceButtonHandler(Windows::Foundation::IInspectable const& sender, Windows::UI::Xaml::RoutedEventArgs const& args);
+        winrt::fire_and_forget SendInputHandler(Windows::Foundation::IInspectable const& sender, winrt::SampleExtensions::SendInputArgs args);
+
     private:
         friend struct MyPageT<MyPage>; // for Xaml to bind events
+        winrt::Windows::Foundation::IAsyncAction _lookupCatalog() noexcept;
+
+        winrt::Microsoft::Terminal::TerminalConnection::ITerminalConnection _connection{ nullptr };
+
+        std::vector<Extension> _extensions;
     };
 }
 

scratch/ScratchIslandApp/SampleApp/MyPage.xaml

@@ -23,8 +23,13 @@
             <TextBox x:Name="GuidInput"
                      Width="400"
                      PlaceholderText="{}{guid here}" />
-            <Button Grid.Row="0">
-                Create
+            <Button Grid.Row="0"
+                    Click="ClickHandler">
+                Do the thing
+            </Button>
+            <Button Grid.Row="0"
+                    Click="ActivateInstanceButtonHandler">
+                RoActivateInstance
             </Button>
 
         </StackPanel>
@@ -46,13 +51,13 @@
                   VerticalAlignment="Stretch"
                   Background="#ff0000" />
 
-            <Grid x:Name="OutOfProcContent"
-                  Grid.Column="1"
-                  Padding="16"
-                  HorizontalAlignment="Stretch"
-                  VerticalAlignment="Stretch"
-                  Background="#0000ff" />
-
+            <StackPanel x:Name="OutOfProcContent"
+                        Grid.Column="1"
+                        Padding="16"
+                        HorizontalAlignment="Stretch"
+                        VerticalAlignment="Stretch"
+                        Background="#0000ff"
+                        Orientation="Vertical" />
 
 
         </Grid>

scratch/ScratchIslandApp/SampleApp/SampleAppLib.vcxproj

@@ -20,6 +20,7 @@
 
   <PropertyGroup Label="NuGet Dependencies">
     <TerminalCppWinrt>true</TerminalCppWinrt>
+    <TerminalMUX>true</TerminalMUX>
   </PropertyGroup>
   <Import Project="..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
   <Import Project="$(OpenConsoleDir)src\common.nugetversions.props" />
@@ -85,6 +86,7 @@
     </Midl>
     <Midl Include="SampleAppLogic.idl" />
     <Midl Include="MySettings.idl" />
+    <Midl Include="IExtension.idl" />
     <Midl Include="MyPage.idl">
       <DependentUpon>MyPage.xaml</DependentUpon>
       <SubType>Code</SubType>
@@ -137,6 +139,15 @@
       <IsSystemReference>True</IsSystemReference>
     </Reference>
 
+    <Reference Include="SampleExtensions">
+      <!-- <HintPath>$(OpenConsoleCommonOutDir)\SampleAppLib\SampleApp.winmd</HintPath> -->
+      <!-- <HintPath>..\..\bin\x64\Debug\SampleAppLib\SampleApp.winmd</HintPath> -->
+      <HintPath>..\..\..\x64\Debug\SampleExtensions\SampleExtensions.winmd</HintPath>
+      <IsWinMDFile>true</IsWinMDFile>
+      <Private>false</Private>
+      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
+    </Reference>
+
   </ItemGroup>
   <!-- ====================== Compiler & Linker Flags ===================== -->
   <ItemDefinitionGroup>
@@ -156,14 +167,6 @@
   <!-- This -must- go after cppwinrt.build.post.props because that includes many VS-provided props including appcontainer.common.props, which stomps on what cppwinrt.targets did. -->
   <Import Project="$(OpenConsoleDir)src\common.nugetversions.targets" />
 
-  <Import Project="$(OpenConsoleDir)packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('$(OpenConsoleDir)packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" />
-  <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('$(OpenConsoleDir)packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(OpenConsoleDir)\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets'))" />
-  </Target>
-
   <!--
     By default, the PRI file will contain resource paths beginning with the
     project name. Since we enabled XBF embedding, this *also* includes App.xbf.

scratch/ScratchIslandApp/SampleApp/dll/SampleApp.vcxproj

@@ -13,6 +13,7 @@
   </PropertyGroup>
   <PropertyGroup Label="NuGet Dependencies">
     <TerminalCppWinrt>true</TerminalCppWinrt>
+    <TerminalMUX>true</TerminalMUX>
   </PropertyGroup>
   <Import Project="..\..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
   <Import Project="$(OpenConsoleDir)src\common.nugetversions.props" />
@@ -90,14 +91,6 @@
     </Link>
   </ItemDefinitionGroup>
 
-  <Import Project="$(OpenConsoleDir)packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('$(OpenConsoleDir)packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" />
-  <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('$(OpenConsoleDir)\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(OpenConsoleDir)\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets'))" />
-  </Target>
-
   <ItemDefinitionGroup>
     <ClCompile>
       <AdditionalIncludeDirectories>$(OpenConsoleDir)\dep\jsoncpp\json;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>

scratch/ScratchIslandApp/SampleApp/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.Toolkit.Win32.UI.XamlApplication" version="6.1.3" targetFramework="native" />
-  <package id="Microsoft.UI.Xaml" version="2.7.3" targetFramework="native" />
+  <package id="Microsoft.UI.Xaml" version="2.8.3" targetFramework="native" />
   <package id="Microsoft.Windows.CppWinRT" version="2.0.230207.1" targetFramework="native" />
 </packages>

scratch/ScratchIslandApp/SampleApp/pch.h

@@ -50,6 +50,8 @@
 #include <winrt/Microsoft.UI.Xaml.Controls.Primitives.h>
 #include <winrt/Microsoft.UI.Xaml.XamlTypeInfo.h>
 
+#include <winrt/Microsoft.Web.WebView2.Core.h>
+
 #include <winrt/Windows.System.h>
 
 // Including TraceLogging essentials for the binary
@@ -66,5 +68,11 @@ TRACELOGGING_DECLARE_PROVIDER(g_hSampleAppProvider);
 #include <winrt/Microsoft.Terminal.Control.h>
 #include <winrt/Microsoft.Terminal.TerminalConnection.h>
 
+#include <winrt/Windows.ApplicationModel.h>
+#include <winrt/Windows.ApplicationModel.AppExtensions.h>
+#include <appmodel.h>
+
+#include <winrt/SampleExtensions.h>
+
 // Manually include til after we include Windows.Foundation to give it winrt superpowers
 #include "til.h"

scratch/ScratchIslandApp/WindowExe/WindowExe.vcxproj

@@ -18,6 +18,7 @@
   <PropertyGroup Label="NuGet Dependencies">
     <TerminalCppWinrt>true</TerminalCppWinrt>
     <TerminalThemeHelpers>true</TerminalThemeHelpers>
+    <TerminalMUX>true</TerminalMUX>
   </PropertyGroup>
 
   <Import Project="..\..\..\common.openconsole.props" Condition="'$(OpenConsoleDir)'==''" />
@@ -142,14 +143,6 @@
 
   <Import Project="$(OpenConsoleDir)src\cppwinrt.build.post.props" />
 
-  <Import Project="..\..\..\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets" Condition="Exists('..\..\..\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" />
-  <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.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\Microsoft.UI.Xaml.2.7.3\build\native\Microsoft.UI.Xaml.targets'))" />
-  </Target>
-
   <!-- Override GetPackagingOutputs to roll up all our dependencies.
        This ensures that when the WAP packaging project asks what files go into
        the package, we tell it.

scratch/ScratchIslandApp/WindowExe/packages.config

@@ -2,5 +2,5 @@
 <packages>
   <package id="Microsoft.Windows.CppWinRT" version="2.0.230207.1" targetFramework="native" />
   <package id="Microsoft.Toolkit.Win32.UI.XamlApplication" version="6.1.3" targetFramework="native" />
-  <package id="Microsoft.UI.Xaml" version="2.7.3" targetFramework="native" />
+  <package id="Microsoft.UI.Xaml" version="2.8.3" targetFramework="native" />
 </packages>

src/cascadia/TerminalConnection/EchoConnection.cpp

@@ -23,6 +23,11 @@ namespace winrt::Microsoft::Terminal::TerminalConnection::implementation
             if (wch < 0x20)
             {
                 prettyPrint << L"^" << gsl::narrow_cast<wchar_t>(wch + 0x40);
+
+                if (wch == L'\n')
+                {
+                    prettyPrint << L"\n";
+                }
             }
             else if (wch == 0x7f)
             {

src/common.nugetversions.targets

@@ -3,7 +3,7 @@
 
   <!--===============================================================================================================
     SPECIAL SAUCE
-    ===================================================================================================================  
+    ===================================================================================================================
     This section contains any special sauce needed to implement Global NuGet Management.-->
 
   <!--Since Global NuGet Management requires having a single [packages.config] file that's located in a special
@@ -58,7 +58,8 @@
       See Microsoft.UI.Xaml.Additional.targets for more info.
       Make sure to update WebView2PackageRoot above to match the WebView2 dependency version.
     -->
-    <Import Project="$(MSBuildThisFileDirectory)..\build\rules\Microsoft.UI.Xaml.Additional.targets" Condition="'$(TerminalMUX)' == 'true'" />
+    <!-- <Import Project="$(MSBuildThisFileDirectory)..\build\rules\Microsoft.UI.Xaml.Additional.targets" Condition="'$(TerminalMUX)' == 'true'" /> -->
+    <Import Project="$(MSBuildThisFileDirectory)..\packages\Microsoft.Web.WebView2.1.0.1661.34\build\native\Microsoft.Web.WebView2.targets" Condition="'$(TerminalMUX)' == 'true' and Exists('$(MSBuildThisFileDirectory)..\packages\Microsoft.Web.WebView2.1.0.1661.34\build\native\Microsoft.Web.WebView2.targets')" />
 
     <!-- WIL (so widely used that this one does not have a TerminalWIL opt-in property; it is automatic) -->
     <Import Project="$(MSBuildThisFileDirectory)..\packages\Microsoft.Windows.ImplementationLibrary.1.0.220201.1\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('$(MSBuildThisFileDirectory)..\packages\Microsoft.Windows.ImplementationLibrary.1.0.220201.1\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />