Help Needed: Draw.Polygon Overload & Stroke Property

[KaizenNU]

Hi everyone,

I'm running into a couple of persistent compilation issues in my NinjaTrader 8 indicator (an Enhanced Volume Profile) and I'm hoping to get some insights from experienced NT8 coders.

The issues I'm facing are:

No overload for method 'Polygon' takes 5 arguments

I'm attempting to call the Draw.Polygon method like this:

profileCurve = Draw.Polygon(this, "profile", true, points.Select(p => p.X).ToArray(), points.Select(p => p.Y).ToArray());
​

but I get the error indicating no overload exists that accepts 5 arguments.

Polygon' does not contain a definition for 'Stroke'
I then tried to set the stroke (outline) of the polygon with:

profileCurve.Stroke = new Stroke(new SolidColorBrush(profileLineColor), DashStyleHelper.Solid, 1);
​

however, the compiler complains that the Polygon type does not have a Stroke property (or extension method).

I understand that NT8’s API for drawing tools is a bit rigid regarding the available overloads and properties. I'm wondering:

• What is the proper way to construct a polygon dynamically from an array or list of points in NT8?
• Is there a supported overload of Draw.Polygon that would let me supply my coordinates without triggering the "5 arguments" error?
• How can I set the stroke (outline) for the polygon? Is there an alternative method or recommended approach (like using templates or another property) to define the polygon's outline?

Any insights, workarounds, or sample code from anyone who’s encountered and solved these issues would be extremely helpful.

Thanks in advance for your help!

[NinjaTrader_Gaby]

Hello,

Thank you for your inquiry.

I recommend taking a look at the Help Guide page for Draw.Polygon() as it contains all the overloads you can use. Note that none of the overloads take only 5 arguments.

https://ninjatrader.com/support/helpguides/nt8/draw_polygon.htm

At the bottom of the page, there is sample code.

[KaizenNU]

Hi Gaby,

Thank you for the help. I checked the documentation again and was able to figure it out. It is working fine now