Update documentation related to the Identify tool (use of ChooseLayer event rather than ActiveLayer property)

Author: jerryfaust

docs/Interop.MapWinGIS/Com Classes/Identifier.cs

@@ -34,10 +34,11 @@ public class Identifier
         /// </summary>
         public uint OutlineColor { get; set; }
 
-        /// <summary>
-        /// Gets or sets the handle of active layer, which is used when Identifer.IdentifierMode set to imSingleLayer.
-        /// </summary>
-        public int ActiveLayer { get; set; }
+        ///// <summary>
+        ///// Gets or sets the handle of active layer, which is used when Identifer.IdentifierMode set to imSingleLayer.
+        ///// NOTE: this method has been hidden, and functionality replaced through use of the ChooseLayer event.
+        ///// </summary>
+        //public int ActiveLayer { get; set; }
     }
 #if nsp
 }

docs/Interop.MapWinGIS/Enumerations/Enumerations.cs

@@ -2368,9 +2368,14 @@ public enum tkIdentifierMode
         /// </summary>
         imAllLayers = 0,
         /// <summary>
-        /// Only shapefile defined by Identifier.ActiveLayer will be identified.
+        /// Only shapefile specified in the context of AxMap.ChooseLayer event will be analyzed.
         /// </summary>
         imSingleLayer = 1,
+        /// <summary>
+        /// All shapefile layers with Shapefile.Identifiable property set to true will be analyzed,
+        /// but search will stop following the first (topmost) layer for which shapes are found.
+        /// </summary>
+        imAllLayersStopOnFirst = 2,
     }
 
     /// <summary>