ChartIconType

 using cAlgo.API;
 namespace cAlgo
 {
     // This example shows how to use the Chart ChartIconType
     [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
     public class ChartIconTypeSample : Indicator
     {
         [Parameter("Icon Type", DefaultValue = ChartIconType.DownArrow)]
         public ChartIconType IconType { get; set; }
         protected override void Initialize()
         {
             Chart.DrawIcon("Icon", IconType, Chart.LastVisibleBarIndex, Chart.Bars.LastBar.Low, Color.Red);
         }
         public override void Calculate(int index)
         {
         }
     }
 }

 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():
     def initialize(self):
         # IconType is a parameter of type ChartIconType enum defined in indicator C# file
         api.Chart.DrawIcon("Icon", api.IconType, api.Chart.LastVisibleBarIndex, api.Chart.Bars.LastBar.Low, Color.Red)