Draw DrawingTool from add-on

[yyesyyesyyes]

Hello everyone,
I developing an add-on and trying to draw custom DrawingTool from the add-on.

Draw partial class:

namespace NinjaTrader.NinjaScript.DrawingTools
{
public class MyDrawingTool : DrawingTool
{

//NinjaScript routine.
public void Init()
{
}

public void InitPosition(Point pos, ChartControl control, ChartScale scale)
{
}

}
 public static partial class Draw
    {
        private static T MyDrawingToolCore<T>(NinjaScriptBase owner, string tag, bool isAutoScale, Point pos, DateTime time, ChartControl chartControl, ChartScale chartScale) where T : DrawingTool
        {
            if (owner == null)
                throw new ArgumentException("owner");

            T chartMarkerT = DrawingTool.GetByTagOrNew(owner, typeof(T), tag, string.Empty) as T;

            if (chartMarkerT == null)
                return default(T);

            DrawingTool.SetDrawingToolCommonValues(chartMarkerT, tag, isAutoScale, owner, true);

            // dont nuke existing anchor refs

            //int                currentBar        = DrawingTool.GetCurrentBar(owner);
            //ChartBars        chartBars        = (owner as Gui.NinjaScript.IChartBars).ChartBars;
            (chartMarkerT as MyDrawingTool).Init();
            (chartMarkerT as MyDrawingTool).InitPosition(pos, chartControl, chartScale);
            var anchor = DrawingTool.CreateChartAnchor(owner, 0, time, pos.Y);
            chartMarkerT.SetState(State.Active);
            return chartMarkerT;
        }

        public static MyDrawingTool MyDrawingTool(NinjaScriptBase owner, string tag, bool isAutoScale, Point pos, DateTime time, ChartControl chartControl, ChartScale chartScale)
        {
            return MyDrawingToolCore<MyDrawingTool>(owner, tag, isAutoScale, pos, time, chartControl, chartScale);
        }
    }​
}

Add-on code:

namespace NinjaTrader.Gui.NinjaScript
{
private MyIndicator ord;

protected override void OnWindowCreated(Window window)
        {
            _myChart = window as Gui.Chart.Chart;

            if (_myChart == null)
            {
                return;
            }
            ord = new MyIndicator();
            _chartControl = _myChart.ActiveChartControl;
            _chartControl.Indicators.Add(ord);
            _chartControl.MouseLeftButtonDown += ActiveChartControl_MouseLeftButtonDown;
        }

private void ActiveChartControl_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            _lastMousePoint = e.GetPosition(Chart.ActiveChartControl);

                Draw.MyDrawingTool(ord, Guid.NewGuid().ToString(), true, _lastMousePoint, DateTime.MinValue, Chart.ActiveChartControl,       Chart.ActiveChartControl.ChartPanels[0].Scales.First(x    => x.ScaleJustification == ScaleJustification.Right));

        }

public class MyIndicator : Indicator
    {

        protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Name = "Placeholder";
                Description = "Placeholder.";
            }
        }

        protected override void OnBarUpdate()
        {
        }​
}
}​​

Basically when user clicked on chart control I calling Draw.MyDrawingTool function to draw the DrawingTool but inside MyDrawingToolCore<T> DrawingTool.GetByTagOrNew(owner, typeof(T), tag, string.Empty) as T; always returning null.

Am I doing something wrong? How to correctly draw a custom drawing tool from an add-on?

Thanks!

[NinjaTrader_ChelseaB]

Hello yyesyyesyyes,

Unfortunately, there is no supported way to call drawing tools from an addon, and thus there is no documentation.

Drawing Tools are designed to be called from an indicator or strategy class only.

Further, calling an indicator from an Addon is also not supported.

This thread will remain open for any community members that would like to provide unsupported code.