add CoverFlow

HandyControlDemo/Data/MessageToken.cs

@@ -72,6 +72,8 @@
 	
         public static readonly string CoverViewDemoCtl = nameof(CoverViewDemoCtl);
 	
+        public static readonly string CoverFlowDemoCtl = nameof(CoverFlowDemoCtl);
+	
         public static readonly string ButtonDemoCtl = nameof(ButtonDemoCtl);
 
         public static readonly string ToggleButtonDemoCtl = nameof(ToggleButtonDemoCtl);