adress NinjaScript object from a nested class

[hallex]

Hello,

What I would like to do is to use the command Draw.Dot(this, ...from a nested class.
From NinjaTrader Help, I understand that the NinjaScriptBase owner "this" has to be replaced by the NinjaScript object which is calling the draw method.
I tried to create a object of the main class within the nested class, its compiles but after that NinjaTrader crashes as soon as I intend to open the indicator window.

I've been through the help, the forum and google but i cant figure out what is the syntax for what should replace "this", any clue would be welcome.


namespace NinjaTrader.NinjaScript.Indicators
{
public class MainClass : Indicator
{
public class NestedClass: Indicator
{
public int Dot;
// MainClass mainClass = new MainClass(); //compiling but crashes NinjaTrader when any indicator is added to a chart

public void DRAW()
{
Dot += 1;
Print(String.Format("NestedClass Dot: {0}", Dot ));
Draw.Dot(this, String.Format("Dot{0}" , Dot ), true, 0, 1284, Brushes.Red); // compiling but doesnt display, "this": what I would like to replace
}
}
NestedClass nestedClass = new NestedClass();


protected override void OnBarUpdate()
{
if ( CurrentBars[0] < 1 ) return;
if ( High[0] > High[1]) nestedClass.DRAW(); // what I would like to do

// all below is OK
// if ( High[0] > High[1]) DRAW();
}

// public int Dot;

// public void DRAW()
// {
// Dot += 1;
// Draw.Dot(this, String.Format("Dot{0}" , Dot ), true, 0, High[0], Brushes.Red);
// }
}
}

[NinjaTrader_Jesse]

Hello hallex,

Just pass the instance into your method or classes constructor, heres a quick example:

public class MyClass
{
    private Indicator instance;
    public MyClass(Indicator indicator)
    {
        instance = indicator;
    }

    public void MyDraw()
    {
        Draw.Dot(instance, "tag", true, 0, instance.Close[0], Brushes.Red);
    }
}
public class Test : Indicator
{
    private MyClass myClassInstance;

    protected override void OnStateChange()
    {
        if (State == State.DataLoaded)
        {
            myClassInstance = new MyClass(this);
        }

    }

    protected override void OnBarUpdate()
    {
        myClassInstance.MyDraw();    
    }
}

Your class won't need to inheret from Indicator, you just need to pass the Indicator type instance to the class, or "this":

myClassInstance = new MyClass(this);

Once you pass an instance, you can use the instance to access any of the public methods or properties of the Indicator base. One example is using it with Draw:

Draw.Dot(instance, "tag", true, 0, instance.Close[0], Brushes.Red);

I look forward to being of further assistance.

[hallex]

Thanks Jesse, i was so far from the truth