net9.0-windows10.0.22621 
namespace Windows.Media.Playback
{
    [SupportedOSPlatform("Windows10.0.10240.0")]
    public sealed class MediaPlayer : ?, IDisposable
    {
        [Obsolete("Use media tracks on MediaPlaybackItem instead of PlaybackMediaMarkers.  For more info, see MSDN.")]
        public event ? PlaybackMediaMarkerReached;
    }
}
.NET
5.06.07.08.09.0
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
Assembly

Microsoft.Windows.SDK.NET , Version=10.0.22621.85, PublicKeyToken=31bf3856ad364e35

Referencing

The API is automatically referenced.

Obsolete Use media tracks on MediaPlaybackItem instead of PlaybackMediaMarkers. For more info, see MSDN.
Platform Restrictions

The event adder is only supported on the following platforms:

  • Windows >= 10.0.10240

The event remover is only supported on the following platforms:

  • Windows >= 10.0.10240
  • Built-in API
  • Package-provided API