Addon getting the right ChartControl

[lkuo.me]

Hi,

I'm developing a simple add-on following the documentation: https://ninjatrader.com/support/help...t_overview.htm


The add-on I'm developing adds and removes certain drawings object to the chart through ChartControl. Below is a code snippet how I get to chart control

protected override void OnWindowCreated(Window window)
		{
			// Instantiate myChart by assigning a reference to the calling Window
			if (window == null)
			{
				return;
			}
			myChart = window as Gui.Chart.Chart;
		 	
			if (myChart == null)
			{
			  return;
			}
			
			chartControl = myChart.ActiveChartControl;
			
			if (chartControl == null)
			{
				return;
			}

			//find chart trader from myChart's Chart Control by its Automation ID: "ChartWindowChartTrader"
			chartTrader = Window.GetWindow(myChart.ActiveChartControl.Parent).FindFirst("ChartWindowChartTraderControl") as Gui.Chart.ChartTrader;

			if (chartTrader == null)
			{
			  return;
			}
....

When there is only 1 chart window opened, everything works perfectly. Then if there are 2 chart windows open, it seems I'm only getting the first ChartControl.

To be specific, if there are two chart windows open, one shows AAPL and another GOOG. When trying to log the instrument name from chartControl.Instrument.FullName, the result would be AAPL and AAPL.

Is there a identifier for chart windows that add-on can differentiate between them?

Thanks

[NinjaTrader_ChelseaB]

Hi lkuo.me,

This would be advanced but you would need to recognize the chart by the indicators on it. Or by having an indicator set a specific property you can recognize.

Attached is an example originally created by NinjaTrader_Jesse that I have modified that demonstrates how to list the windows if they are charts, and how to list the indicators from each chart, and how to set a property in the indicator.

Note, this example uses undocumented / unsupported code.

[coppernob108]

Thanks Chelsea. I will be looking into this.

Thanks.