<PackageReference Include="System.Drawing.Common" Version="10.0.4" />

System.Private.Windows.Id

struct Id : IEquatable<Id>
Identifier struct.
namespace System.Private.Windows { internal readonly struct Id : IEquatable<Id> { public static Id Null { get; } public bool IsNull { get; } public static implicit operator int(Id value); public static implicit operator Id(int value); public bool Equals(Id other); public static bool operator ==(Id left, Id right); public static bool operator !=(Id left, Id right); } }