Set chart background in code

[digibob]

Hi.

I'm trying to set the chart background in code (strategy). I create a brush and apply it inside OnRender() as below but nothing happens.

ChartControlProperties myProperties = chartControl.Properties;
myProperties.ChartBackground = myBrush;

Is there a code example somewhere?

I need it in realtime rather than historical, if it makes a difference.

Thanks.

[NinjaTrader_ChelseaB]

Hello digibob,

I see that our example shows changing these properties in OnRender(). That is very inefficient especially for the property being set in the example.

https://ninjatrader.com/support/helpGuides/nt8/chartcontrol_properties.htm

I've noted our developers about this.
I do not recommend that you try and change the ChartBackground in OnRender() if you can avoid it in any way, unless you are wanting to be able to change the color several times a second on each render pass.


Attached is an example that changes the background in real-time.

[digibob]

Hi Chelsea. I was hoping actually to avoid using OnRender(). That's exactly what I need. Many thanks.

[efeuvejota01]

Hello!!
I want to flip from CrosshairType.Off to CrosshairType.Local but had no success.



any advice how to achieve it??
Thank you!!!

[NinjaTrader_BrandonH]

Hello efeuvejota01,

Thanks for your note.

You could set the CrosshairType by calling chartControl.CrosshairType within the OnRender() method in a NinjaScript.

The sample code below demonstrates how to set the CrosshairType to Local.

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
    //Set crosshair type to local
    chartControl.CrosshairType = CrosshairType.Local;

    //Print out the current crosshair type
    Print("CrosshairType: " + chartControl.CrosshairType.ToString());
}

See this help guide documentation for more information about CrosshairType: https://ninjatrader.com/support/help...sshairtype.htm

Let me know if I may assist further.

[efeuvejota01]

thank you!! let me try...
worked perfecly!!

Thank you!!

[efeuvejota01]

it also work as shown in the attached code...

 protected override void OnBarUpdate()
{
if (State != State.Realtime)
return;
this.Dispatcher.InvokeAsync(() =>
{
if (flip)
{ //ChartControl.Properties.CrosshairCrosshairType = CrosshairType.Off;
ChartControl.CrosshairType = CrosshairType.Off;
Print("uno");}
else
{ //ChartControl.Properties.CrosshairCrosshairType = CrosshairType.Local;
ChartControl.CrosshairType = CrosshairType.Local;
Print("dos");}
});
flip = !flip;
}