DrawingTool with Mouse events.

[yyesyyesyyes]

Hello,
I'm developing a DrawingTool for NT8 and I need to check when mouse is hovering specific area.
I tried to subscribe to the ChartPanel.ChartControl mouse events OnStateChange function (Historical, SetDefaults, Configure) but every time ChartPanel was null.

How to correctly subscribe to ChartPanel.ChartControl events in DrawingTool?

[NinjaTrader_ChelseaB]

Hello yyesyyesyyes,

In a DrawingTool script, the OnMouseMove() would provide the ChartPanel (which you could assign to a variable for use in other methods).

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

[NinjaTrader_Emily]

Hello yyesyyesyyes,

Thank you for your post.

As noted in the help guide, ChartControl should only be accessed once the state has reached State.Historical:

• https://ninjatrader.com/support/help...artcontrol.htm
  • See the yellow "Warning" box

Which event(s) are you subscribing to in your script? I suggest subscribing in State.Historical as well as adding a null reference check similar to this snippet:

else if (State == State.Historical)
{
     if (ChartControl != null)
          ChartControl.MouseLeftButtonDown += MouseClicked;​
}

If you are still experiencing unexpected behavior, please provide a snippet of what you have within OnStateChange so I may better understand and assist you.

Please let me know if I may be of further assistance.