更新

AntdWpf/Contracts/ISpinable.cs

@@ -0,0 +1,10 @@
+namespace AntdWpf.Contracts
+{
+    /// <summary>
+    /// Represents a spinable control. From https://github.com/charri/Font-Awesome-WPF/blob/master/src/WPF/FontAwesome.WPF/ISpinable.cs
+    /// </summary>
+    public interface ISpinable
+    {
+        bool? Spin { get; set; }
+    }
+}

AntdWpf/Contracts/IThumb.cs

@@ -0,0 +1,17 @@
+namespace AntdWpf.Contracts
+{
+    using System.Windows;
+    using System.Windows.Controls.Primitives;
+    using System.Windows.Input;
+
+    public interface IThumb : IInputElement
+    {
+        event DragStartedEventHandler DragStarted;
+
+        event DragDeltaEventHandler DragDelta;
+
+        event DragCompletedEventHandler DragCompleted;
+
+        event MouseButtonEventHandler MouseDoubleClick;
+    }
+}