Info Label - Deepchart Indicators

Source: src/Annotations/InfoLabel.cs · Calculated on: desktop or server A text with the change of the current session, at a fixed position of the chart area.

What it shows

Relative coordinates.
The foreground group, IndVars.FrontAnnList.
Description and StatusMessage.
A color chosen at run time from the theme.

A label which does not scroll

label = VAn.CreateAnnotation(AnnotationType.Text);
label.CoordinateXType = CoordinateTypeEnum.Relative;
label.CoordinateYType = CoordinateTypeEnum.Relative;
label.X = HorizontalPosition;   // 0 to 1
label.Y = VerticalPosition;     // 0 to 1
VAn.AddAnnotation(IndVars.FrontAnnList, label);

The annotation is created once in OnLoad. After that only its text and its color change:

label.Text = $"{VAn.SymbolName}  {change:+0.00;-0.00}%";
label.ForeColor = IMethodAPI.GetColorRefForTheme(change >= 0 ? ColorReferenceEnum.Up : ColorReferenceEnum.Down, ColorTypeEnum.Text);

Talking to the user

// OnSet: next to the name of the indicator
Description = "Session change";

// OnLoad: on the chart when it has loaded, null when there is nothing to say
StatusMessage = VAn.ParamType == ChartResolutionInfo.ParamTypeEnum.Minute ? null : "Info Label: the session change is meant for time based charts";

Use StatusMessage when the indicator cannot work as expected on the current chart. It is better than drawing nothing without a reason.

Try

Add the range of the session on a second line.
Add a parameter for the color of the background.