CheckBox

 using cAlgo.API;
 namespace cAlgo
 {
     // This sample shows how to use checkbox control and handle its checked/unchecked events
     [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
     public class CheckBoxControlSample : Indicator
     {
         protected override void Initialize()
         {
             var stackPanel = new StackPanel
             {
                 HorizontalAlignment = HorizontalAlignment.Center,
                 VerticalAlignment = VerticalAlignment.Center,
                 BackgroundColor = Color.Gold
             };
             var checkBox = new CheckBox
             {
                 Text = "Unchecked",
                 Margin = 10,
                 FontWeight = FontWeight.ExtraBold
             };
             checkBox.Checked += CheckBox_Checked;
             checkBox.Unchecked += CheckBox_Unchecked;
             stackPanel.AddChild(checkBox);
             Chart.AddControl(stackPanel);
         }
         private void CheckBox_Unchecked(CheckBoxEventArgs obj)
         {
             obj.CheckBox.Text = "Unchecked";
         }
         private void CheckBox_Checked(CheckBoxEventArgs obj)
         {
             obj.CheckBox.Text = "Checked";
         }
         public override void Calculate(int index)
         {
         }
     }
 }

 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():
     def initialize(self):
         stackPanel = StackPanel()
         stackPanel.HorizontalAlignment = HorizontalAlignment.Center
         stackPanel.VerticalAlignment = VerticalAlignment.Center
         stackPanel.BackgroundColor = Color.Gold
         checkBox = CheckBox()
         checkBox.Text = "Unchecked"
         checkBox.Margin = Thickness(10)
         checkBox.FontWeight = FontWeight.ExtraBold
         checkBox.Checked += self.on_checkBox_checked
         checkBox.Unchecked += self.on_checkBox_unchecked
         stackPanel.AddChild(checkBox)
         api.Chart.AddControl(stackPanel)
     def on_checkBox_checked(self, args):
         args.CheckBox.Text = "Checked"
     def on_checkBox_unchecked(self, args):
         args.CheckBox.Text = "Unchecked"