One operation but two modification on the HorizentalLine

Created at 09 Feb 2022, 16:30

Joined 03.06.2020

One operation but two modification on the HorizentalLine
09 Feb 2022, 16:30

Hi Support Team,

I have the below code, which draws a horizontal line at the last tick bid price. And if I drag the line to a new position, the code will update the horizontal line's comment with the new price of it.

The issue I have is that the 'private void SLModified' would run twice, once when I DragEnd of it. And the 2nd run was comments updated. Though it doesn't affect my programme running, I still want to know is there any way to avoid the 2nd run when I drag the line?

Thanks,

using System;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class HorizentalLineTest : Robot
    {
        private ChartHorizontalLine hlStopLoss;             

        protected override void OnStart()   
        { 
            hlStopLoss = Chart.DrawHorizontalLine("StopLoss", Symbol.Bid,  Color.FromHex("#BBFF7777"), 1, LineStyle.LinesDots);
            hlStopLoss.IsInteractive   = true; hlStopLoss.IsLocked   = false; hlStopLoss.Comment = Symbol.Bid.ToString();
            Chart.ObjectsUpdated += SLModified; 
        }

        protected override void OnTick()    { }

        protected override void OnStop()    { Chart.RemoveObject(hlStopLoss.Name); }

        private void SLModified(ChartObjectsUpdatedEventArgs obj) //Modify HorizentialLine, to update Price in Comments
        {
            var horizentalLine = obj.ChartObjects.FirstOrDefault(iObject => iObject.ObjectType == ChartObjectType.HorizontalLine && iObject.Name.Equals(hlStopLoss.Name, StringComparison.OrdinalIgnoreCase));
            if (horizentalLine != null) 
            { 
                hlStopLoss.Comment = hlStopLoss.Y.ToString("0.00000"); 
                Print("HorizentalLine's Y: " + hlStopLoss.Y.ToString("0.00000"));
            }
        }

    }
}

@Capt.Z-Fort.Builder

Replies

amusleh
10 Feb 2022, 08:32

Hi,

You can use a bool flag to avoid the second call:

using System;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class HorizentalLineTest : Robot
    {
        private ChartHorizontalLine hlStopLoss;

        private bool _updatingComment;

        protected override void OnStart()
        {
            hlStopLoss = Chart.DrawHorizontalLine("StopLoss", Symbol.Bid, Color.FromHex("#BBFF7777"), 1, LineStyle.LinesDots);
            hlStopLoss.IsInteractive = true; hlStopLoss.IsLocked = false; hlStopLoss.Comment = Symbol.Bid.ToString();
            Chart.ObjectsUpdated += SLModified;
        }

        protected override void OnTick()
        { }

        protected override void OnStop()
        { Chart.RemoveObject(hlStopLoss.Name); }

        private void SLModified(ChartObjectsUpdatedEventArgs obj) //Modify HorizentialLine, to update Price in Comments
        {
            if (_updatingComment)
            {
                _updatingComment = false;

                return;
            }

            var horizentalLine = obj.ChartObjects.FirstOrDefault(iObject => iObject.ObjectType == ChartObjectType.HorizontalLine && iObject.Name.Equals(hlStopLoss.Name, StringComparison.OrdinalIgnoreCase));

            if (horizentalLine != null)
            {
                _updatingComment = true;

                hlStopLoss.Comment = hlStopLoss.Y.ToString("0.00000");
                Print("HorizentalLine's Y: " + hlStopLoss.Y.ToString("0.00000"));
            }
        }
    }
}

@amusleh

Capt.Z-Fort.Builder
10 Feb 2022, 15:59

RE:

Thank you Musleh as always, it works pretty well. :)

amusleh said:

Hi,

You can use a bool flag to avoid the second call:

using System;
using System.Linq;
using cAlgo.API;
using cAlgo.API.Internals;

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class HorizentalLineTest : Robot
    {
        private ChartHorizontalLine hlStopLoss;

        private bool _updatingComment;

        protected override void OnStart()
        {
            hlStopLoss = Chart.DrawHorizontalLine("StopLoss", Symbol.Bid, Color.FromHex("#BBFF7777"), 1, LineStyle.LinesDots);
            hlStopLoss.IsInteractive = true; hlStopLoss.IsLocked = false; hlStopLoss.Comment = Symbol.Bid.ToString();
            Chart.ObjectsUpdated += SLModified;
        }

        protected override void OnTick()
        { }

        protected override void OnStop()
        { Chart.RemoveObject(hlStopLoss.Name); }

        private void SLModified(ChartObjectsUpdatedEventArgs obj) //Modify HorizentialLine, to update Price in Comments
        {
            if (_updatingComment)
            {
                _updatingComment = false;

                return;
            }

            var horizentalLine = obj.ChartObjects.FirstOrDefault(iObject => iObject.ObjectType == ChartObjectType.HorizontalLine && iObject.Name.Equals(hlStopLoss.Name, StringComparison.OrdinalIgnoreCase));

            if (horizentalLine != null)
            {
                _updatingComment = true;

                hlStopLoss.Comment = hlStopLoss.Y.ToString("0.00000");
                Print("HorizentalLine's Y: " + hlStopLoss.Y.ToString("0.00000"));
            }
        }
    }
}

@Capt.Z-Fort.Builder

Copyright © 2024 Spotware Systems Ltd. All rights reserved.
cTrader Ltd offers through its group of companies the cTrader platform. The information on this website is for general informational purposes only and does not constitute financial or investment advice. cTrader does not solicit retail investors. Reliance on this information is at your own risk.