InteropCompositor 1.0.0

Interop Compositor

With the release of .NET5 Preview 8, Microsoft introduced a streamlined way for .NET developers to access the set of Windows Runtime (WinRT) APIs that are shipped as part of Windows..NET5 applications can now access Windows APIs through a new set of Target Framework Monikers (TFMs), which have been extended to support platform specific APIs.

This change means that applications targeting .NET5 no longer need to reference the Microsoft.Windows.SDK.Contracts NuGet package. But in Target Framework Moniker Using Compositor object to get ICompositorDesktopInterop throws exception

System.PlatformNotSupportedException: 'Marshalling as IInspectable is not supported in the .NET runtime.'

To overcome this issue you can use InteropCompositor.

Install

NuGet Package

Install-Package InteropCompositor

https://nuget.org/packages/InteropCompositor

Usage

Set the TargetFramework in the project file

<TargetFramework>net5.0-windows10.0.19041.0</TargetFramework>

and in your code use

Compositor compositor = new Compositor();
ICompositorDesktopInterop interop = compositor.TryAs<ICompositorDesktopInterop>();
interop.CreateDesktopWindowTarget(hwnd, true, out var target).ThrowOnError();
ICompositionTarget compositionTarget = (ICompositionTarget)target;

Note: Don't forget to create DispatcherQueueController on MainWindow Constructor.

Credits 🏅

Simon Mourier and his Repository DirectN