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1 change: 1 addition & 0 deletions
1
core/interop/source-generation/ComWrappersGeneration/.gitignore
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| @@ -0,0 +1 @@ | ||
| OutputFiles |
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core/interop/source-generation/ComWrappersGeneration/Client/Client.csproj
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| <Project Sdk="Microsoft.NET.Sdk"> | ||
|
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| <PropertyGroup> | ||
| <OutputType>Exe</OutputType> | ||
| <TargetFramework>net8.0</TargetFramework> | ||
| <ImplicitUsings>enable</ImplicitUsings> | ||
| <Nullable>enable</Nullable> | ||
|
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| <!-- Uncomment to publish as a native executable --> | ||
| <!-- <PublishAOT>true</PublishAOT> --> | ||
| </PropertyGroup> | ||
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| </Project> |
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core/interop/source-generation/ComWrappersGeneration/Client/Program.cs
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| using System; | ||
| using System.Diagnostics; | ||
| using System.Runtime.CompilerServices; | ||
| using System.Runtime.InteropServices; | ||
| using System.Runtime.InteropServices.Marshalling; | ||
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| [assembly: DisableRuntimeMarshalling] | ||
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| namespace Tutorial; | ||
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| public class Program | ||
| { | ||
| public static unsafe void Main(string[] args) | ||
| { | ||
| var clsid = new Guid(Clsids.Calculator); | ||
| var iid = new Guid(ICalculator.IID); | ||
| Console.WriteLine($"Client: Requesting a Calculator (CLSID {clsid}) with ICalculator (IID {iid})"); | ||
| int hr = Ole32.CoCreateInstance(ref clsid, /* No aggregation */ 0, (uint)Ole32.CLSCTX.CLSCTX_INPROC_SERVER, ref iid, out object comObject); | ||
| Marshal.ThrowExceptionForHR(hr); | ||
| ICalculator calculator = (ICalculator) comObject; | ||
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| int a = 5; | ||
| int b = 3; | ||
| int c; | ||
| c = calculator.Add(a, b); | ||
| Console.WriteLine($"Client: {a} + {b} = {c}"); | ||
| c = calculator.Subtract(a, b); | ||
| Console.WriteLine($"Client: {a} - {b} = {c}"); | ||
| } | ||
| } | ||
|
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| internal static unsafe partial class Ole32 | ||
| { | ||
| // https://docs.microsoft.com/windows/win32/api/combaseapi/nf-combaseapi-cocreateinstance | ||
| [LibraryImport(nameof(Ole32))] | ||
| public static partial int CoCreateInstance( | ||
| ref Guid rclsid, | ||
| nint pUnkOuter, | ||
| uint dwClsContext, | ||
| ref Guid riid, | ||
| // The default ComInterfaceMarshaller will unwrap a .NET object if it can tell the COM instance is a ComWrapper. | ||
| // This causes issues when casting to ICalculator, since the Server's Calculator class doesn't implement the Client's interface. | ||
| // UniqueComInterfaceMarshaller doesn't try to unwrap the object and always creates a new COM object. | ||
| [MarshalUsing(typeof(UniqueComInterfaceMarshaller<object>))] | ||
| out object ppv); | ||
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| // https://learn.microsoft.com/windows/win32/api/wtypesbase/ne-wtypesbase-clsctx | ||
| public enum CLSCTX : uint | ||
| { | ||
| CLSCTX_INPROC_SERVER = 0x1, | ||
| CLSCTX_INPROC_HANDLER = 0x2, | ||
| CLSCTX_LOCAL_SERVER = 0x4, | ||
| CLSCTX_INPROC_SERVER16 = 0x8, | ||
| CLSCTX_REMOTE_SERVER = 0x10, | ||
| CLSCTX_INPROC_HANDLER16 = 0x20, | ||
| CLSCTX_RESERVED1 = 0x40, | ||
| CLSCTX_RESERVED2 = 0x80, | ||
| CLSCTX_RESERVED3 = 0x100, | ||
| CLSCTX_RESERVED4 = 0x200, | ||
| CLSCTX_NO_CODE_DOWNLOAD = 0x400, | ||
| CLSCTX_RESERVED5 = 0x800, | ||
| CLSCTX_NO_CUSTOM_MARSHAL = 0x1000, | ||
| CLSCTX_ENABLE_CODE_DOWNLOAD = 0x2000, | ||
| CLSCTX_NO_FAILURE_LOG = 0x4000, | ||
| CLSCTX_DISABLE_AAA = 0x8000, | ||
| CLSCTX_ENABLE_AAA = 0x10000, | ||
| CLSCTX_FROM_DEFAULT_CONTEXT = 0x20000, | ||
| CLSCTX_ACTIVATE_X86_SERVER = 0x40000, | ||
| CLSCTX_ACTIVATE_32_BIT_SERVER, | ||
| CLSCTX_ACTIVATE_64_BIT_SERVER = 0x80000, | ||
| CLSCTX_ENABLE_CLOAKING = 0x100000, | ||
| CLSCTX_APPCONTAINER = 0x400000, | ||
| CLSCTX_ACTIVATE_AAA_AS_IU = 0x800000, | ||
| CLSCTX_RESERVED6 = 0x1000000, | ||
| CLSCTX_ACTIVATE_ARM32_SERVER = 0x2000000, | ||
| CLSCTX_ALLOW_LOWER_TRUST_REGISTRATION, | ||
| CLSCTX_PS_DLL = 0x80000000, | ||
| } | ||
| } |
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core/interop/source-generation/ComWrappersGeneration/ComWrappersGeneration.sln
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| @@ -0,0 +1,28 @@ | ||
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| Microsoft Visual Studio Solution File, Format Version 12.00 | ||
| # Visual Studio Version 17 | ||
| VisualStudioVersion = 17.0.31903.59 | ||
| MinimumVisualStudioVersion = 10.0.40219.1 | ||
| Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Client", "Client\Client.csproj", "{065F345B-901A-4BCD-8CAF-ACBB6B6910F8}" | ||
| EndProject | ||
| Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Server", "Server\Server.csproj", "{DCA455A0-57CF-467F-9D5D-10C95EAA9441}" | ||
| EndProject | ||
| Global | ||
| GlobalSection(SolutionConfigurationPlatforms) = preSolution | ||
| Debug|Any CPU = Debug|Any CPU | ||
| Release|Any CPU = Release|Any CPU | ||
| EndGlobalSection | ||
| GlobalSection(SolutionProperties) = preSolution | ||
| HideSolutionNode = FALSE | ||
| EndGlobalSection | ||
| GlobalSection(ProjectConfigurationPlatforms) = postSolution | ||
| {065F345B-901A-4BCD-8CAF-ACBB6B6910F8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU | ||
| {065F345B-901A-4BCD-8CAF-ACBB6B6910F8}.Debug|Any CPU.Build.0 = Debug|Any CPU | ||
| {065F345B-901A-4BCD-8CAF-ACBB6B6910F8}.Release|Any CPU.ActiveCfg = Release|Any CPU | ||
| {065F345B-901A-4BCD-8CAF-ACBB6B6910F8}.Release|Any CPU.Build.0 = Release|Any CPU | ||
| {DCA455A0-57CF-467F-9D5D-10C95EAA9441}.Debug|Any CPU.ActiveCfg = Debug|Any CPU | ||
| {DCA455A0-57CF-467F-9D5D-10C95EAA9441}.Debug|Any CPU.Build.0 = Debug|Any CPU | ||
| {DCA455A0-57CF-467F-9D5D-10C95EAA9441}.Release|Any CPU.ActiveCfg = Release|Any CPU | ||
| {DCA455A0-57CF-467F-9D5D-10C95EAA9441}.Release|Any CPU.Build.0 = Release|Any CPU | ||
| EndGlobalSection | ||
| EndGlobal |
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core/interop/source-generation/ComWrappersGeneration/Directory.Build.props
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| <Project> | ||
| <!-- Shared properties --> | ||
| <PropertyGroup> | ||
| <DefaultTargetFramework>net8.0</DefaultTargetFramework> | ||
| <AllowUnsafeBlocks>true</AllowUnsafeBlocks> | ||
| <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles> | ||
| <CompilerGeneratedFilesOutputPath>bin\Generated</CompilerGeneratedFilesOutputPath> | ||
| <PublishDir>$(MSBuildThisFileDirectory)\OutputFiles\$(MSBuildProjectName)\</PublishDir> | ||
| </PropertyGroup> | ||
|
|
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| <ItemGroup> | ||
| <Compile Include="../Shared/*.cs" /> | ||
| </ItemGroup> | ||
| </Project> |
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38
core/interop/source-generation/ComWrappersGeneration/README.md
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| --- | ||
| languages: | ||
| - csharp | ||
| products: | ||
| - dotnet | ||
| page_type: sample | ||
| name: "Source-Generated COM Sample" | ||
| urlFragment: "generated-comwrappers" | ||
| description: "A .NET codebase that uses source-generated COM in .NET" | ||
| --- | ||
| # .NET Source-Generated COM Sample | ||
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| This tutorial demonstrates how to use COM source generators in .NET 8+ to create a COM server and client for in-process COM. | ||
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| This example defines an interface `ICalculator` that provides `Add` and `Subtract` methods. The server provides an implementation of `ICalculator` for the client to use after the server has been registered. The client project creates an instance of the object using the [`CoCreateInstance`](https://learn.microsoft.com/windows/win32/api/combaseapi/nf-combaseapi-cocreateinstance) Win32 method, and calls methods on the object. | ||
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| This sample supports NativeAOT and standard CoreCLR deployments. The native methods that the Windows COM system requires are exported automatically with the `[UnmanagedCallersOnly]` attribute when publishing with NativeAOT. For CoreCLR, the [DNNE](https://github.com/AaronRobinsonMSFT/DNNE) package is used to provide the exported functions. | ||
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| ## Prerequisites | ||
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| - .NET 8+ SDK | ||
| - Windows 10+ OS | ||
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| ## Build and Run | ||
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| ### NativeAOT | ||
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| Build the Native AOT binaries by running `dotnet publish -r <RID>` where `<RID>` is the RuntimeIdentifier for your OS, for example `win-x64`. The projects will copy the binaries to the `OutputFiles\` directory. After publishing, use `regsvr32.exe` to register `Server.dll` with COM by running run `regsvr.exe .\OutputFiles\Server\Server.dll`. Then, run the client application `.\OutputFiles\Client\Client.exe` and observe the output as it activates and uses a COM instance from `Server.dll`. | ||
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| ### CoreCLR | ||
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| Build the projects by running `dotnet publish`. The projects will copy the binaries to the `OutputFiles\` directory. After publishing, use `regsvr32.exe` to register the native binary produced by DNNE, `ServerNE.dll` by running `regsvr.exe .\OutputFiles\Server\ServerNE.dll`. `ServerNE.dll` will start the .NET runtime and call the exported methods in the managed `Server.dll` which register the server with COM. Then, run the client application `.\OutputFiles\Client\Client.exe` and observe the output as it activates and uses a COM instance from `ServerNE.dll`. | ||
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| ## See also | ||
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| - [ComWrappers source generation](https://learn.microsoft.com/dotnet/standard/native-interop/comwrappers-source-generation) | ||
| - [Native exports in NativeAOT](https://learn.microsoft.com/dotnet/core/deploying/native-aot/interop#native-exports) | ||
| - [COM interop in .NET](https://learn.microsoft.com/dotnet/standard/native-interop/cominterop) |
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core/interop/source-generation/ComWrappersGeneration/Server/Calculator.cs
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,15 @@ | ||
| using System; | ||
| using System.Runtime.InteropServices; | ||
| using System.Runtime.InteropServices.Marshalling; | ||
| using Microsoft.Win32; | ||
|
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| namespace Tutorial; | ||
|
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| [GeneratedComClass] | ||
| [Guid(Clsid)] | ||
| internal partial class Calculator : ICalculator | ||
| { | ||
| public int Add(int a, int b) => a + b; | ||
| public int Subtract(int a, int b) => a - b; | ||
| internal const string Clsid = Clsids.Calculator; | ||
| } |
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