更新

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;
+    }
+}