ChartControl.MouseUp lock

[frankduc]

Hello,

Is there a way i can lock the

ChartControl.MouseUp (int cursorPointX = ChartingExtensions.ConvertToHorizontalPixels(chart Control.MouseDownPoint.X, chartControl):

I want the text i click on the chart to be lock on the chart so when i click elsewhere on the chart the text dont follow.
Something that would trigger a lock and unlock by hiting a key?

Thank you

[NinjaTrader_ChrisL]

Hi frankduc, thanks for your question.

It seems like your drawing code is tied too closely to the mouse click code, so it changes every time (that's what I am guessing here without the full context).

We have these examples that might be useful:

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/96421-draw-dot-from-indicator-owner-problem

Please let me know if I can assist any further.

[frankduc]

Sorry i was not clear.

Its base on the samplestremwriter

public override void OnRenderTargetChanged()
        {
            textBrush = Brushes.Lime.ToDxBrush(RenderTarget);
        }

Can i use IsLocked to freeze the textBrush?

public override void OnMouseMove(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, Point point)
{
  if (IsLocked) //if the object is locked, do not attempt to move
    return;
}

Do i have to replace public override void OnRenderTargetChanged() by public override void OnMouseMove(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, Point point)

Will it freeze only the textBrush or also the calculation that comes with it? Since i am using
cursorPointX in my for loops i wonder if the text will stop moving but the calculation will still follow the cursor? TY

[NinjaTrader_ChrisL]

Hi frankduc, thanks for your reply.

Using a bool like this is a good way to prevent code from running if you do not want it to. I don't have the full context of what this script is supposed to do. Could you let me know what the script is supposed to do and where the issue is originating?

Best regards.

[frankduc]

Chris,

If i use IsLocked

public override void OnRenderTargetChanged()
        {
            if (IsLocked) 


    return;

            else {
            textBrush = Brushes.Lime.ToDxBrush(RenderTarget);
            }
        }

That's what i thought uncheck or check the square box and text vanish from the chart instead of just freezing it at specific place where i clicked on the chart.

there is something i dont get,

TY

[NinjaTrader_ChrisL]

Hello frankduc, thanks for your reply.

OnRenderTargetChanged is used to clean up or update objects that render to the SharpDX RenderTarget. See the notes on the documentation here for examples on when the render target changes. This is not a good place to control the position of a sharp dx object. I am seeing you are using an OnMouseMove event, The first thing to test would be if we are seeing a call to OnRender every time MouseMove is called. That would be required for any rendered object to be controlled by the mouse. I am assuming it doesn't because of this note :

For performance optimizations, the timing of the calls to OnRender() are buffered to at least 250ms, and re-renders once internal logic determines that values may be out-of-date. See also ForceRefresh() for more details

Please let me know if I can assist any further.