Add C# 11 support WIP and net7.0 support.

Directory.Build.props

@@ -1,9 +1,11 @@
 <Project>
   <PropertyGroup>
-    <LangVersion>10.0</LangVersion>
+    <LangVersion>11.0</LangVersion>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
+    <EnablePreviewFeatures>true</EnablePreviewFeatures>
     
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <NoWarn>CS1591;CS1701</NoWarn>
@@ -37,6 +39,11 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
+
+    <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="4.4.0-2.final">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
   </ItemGroup>
 
 </Project>

NuGet.config

@@ -1,13 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
-  <packageSources>
-    <clear />
-    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
-  </packageSources>
-
   <packageSourceMapping>
-    <packageSource key="nuget.org">
+    <packageSource key="nuget">
       <package pattern="*" />
     </packageSource>
+    <packageSource key="dotnet-tools">
+      <package pattern="Microsoft.Net.Compilers.Toolset" />
+    </packageSource>
   </packageSourceMapping>
+  <packageSources>
+    <clear />
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+    <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
+  </packageSources>
 </configuration>

src/Generator/Generator.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
+    <TargetFramework>net7.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <IsPackable>false</IsPackable>

src/Vortice.Win32/Com/Variant.cs

@@ -1,8 +1,6 @@
 // Copyright © Amer Koleci and Contributors.
 // Licensed under the MIT License (MIT). See LICENSE in the repository root for more information.
 
-using System.Globalization;
-
 namespace Win32.Com;
 
 /// <summary>

src/Vortice.Win32/INativeGuid.cs

@@ -0,0 +1,11 @@
+// Copyright © Amer Koleci and Contributors.
+// Licensed under the MIT License (MIT). See LICENSE in the repository root for more information.
+
+namespace Win32;
+
+public unsafe interface INativeGuid
+{
+#if NET6_0_OR_GREATER
+    protected internal static Guid* NativeGuid { get; }
+#endif
+}

src/Vortice.Win32/IUnknown.cs

@@ -7,7 +7,7 @@ using System.Runtime.CompilerServices;
 namespace Win32;
 
 [Guid("00000000-0000-0000-C000-000000000046")]
-public unsafe partial struct IUnknown
+public unsafe partial struct IUnknown : INativeGuid
 {
     public static ref readonly Guid IID_IUnknown
     {
@@ -32,7 +32,11 @@ public unsafe partial struct IUnknown
         }
     }
 
+#if NET6_0_OR_GREATER
+    internal static Guid* NativeGuid => (Guid*)Unsafe.AsPointer(ref Unsafe.AsRef(in IID_IUnknown));
+#else
     public static Guid* NativeGuid => (Guid*)Unsafe.AsPointer(ref Unsafe.AsRef(in IID_IUnknown));
+#endif
 
     public void** lpVtbl;
 

src/Vortice.Win32/Vortice.Win32.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>netstandard2.0;net6.0;</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net6.0;net7.0</TargetFrameworks>
     <Description>Windows API low level bindings.</Description>
     <VersionPrefix>1.6.0</VersionPrefix>
     <VersionSuffix Condition="'$(VersionSuffix)' == ''"></VersionSuffix>