net9.0-windows10.0.22621 
namespace Microsoft.UI.Xaml.Media.Media3D
{
    [WindowsRuntimeHelperType(typeof(Matrix3D))]
    [WindowsRuntimeType("Microsoft.UI")]
    [WinRTExposedType(typeof(StructTypeDetails<Matrix3D, Matrix3D>))]
    public struct Matrix3D : IFormattable
    {
        public void Invert();
    }
}
.NET 6.07.08.09.0
Information specific to net9.0
Platforms This API is only available when you target a specific platform:
Windows 10.0.1776310.0.1836210.0.1904110.0.2034810.0.2200010.0.22621
Information specific to net9.0-windows10.0.22621
Assemblies

Microsoft.WinUI , Version=3.0.0.0, PublicKeyToken=de31ebe4ad15742b

Microsoft.WinUI , Version=3.0.0.0, PublicKeyToken=de31ebe4ad15742b

Referencing

Your project needs a package reference to Microsoft.WindowsAppSDK.

Package Microsoft.WindowsAppSDK (1.7.250208002-preview1) net6.0-windows10.0.22621
Platform Restrictions

This API is only supported on the following platforms:

  • Windows >= 10.0.17763
  • Built-in API
  • Package-provided API