NinjaScript > Language Reference > Common > Charts > Rendering

Definition

Indicates a chart object is currently selected. When this property is set to true in a DrawingTool, the GetSelectionPoints() will be called.

Property Value

This property returns true to indicate that the chart object is selected; otherwise, false. Default set to false.

Warning: This property value is ONLY guaranteed to be settable by the object to which it belongs (e.g., from within a DrawingTool). Modifying its value from an external object (such as attempting to set a DrawingTool.IsSelected from an indicator) can result in the property automatically returning the value handled by its source. In other words, unless you are working with a chart object type directly (e.g., building a custom drawing tool), the IsSelected property should be considered read-only.

Syntax

IsSelected

Examples

Reading the IsSelected property from an indicator

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
foreach(DrawingTool drawTool in DrawObjects)
{
// only apply logic below to types of "Rectangle")
if(drawTool.GetType().ToString().Contains("Rectangle"))
{
// safely cast as dynamic type at run-time
dynamic myRect = drawTool;

// Changes the brush to pink to indicating selected
if(drawTool.IsSelected)
{
myRect.AreaBrush = Brushes.Pink;
}
// otherwise, set back to default value on next render pass
else myRect.AreaBrush = Brushes.CornflowerBlue;

}
}
}

Explicitly setting the IsSelected property from a DrawingTool type

public override void OnMouseDown(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, ChartAnchor dataPoint)
{
if(DrawingState == DrawingState.Building)
{
if(dataPoint.IsEditing)
{
// do something
}

// when done editing anchor, set the state to normal and unselect the drawing object
else if(dataPoint.IsEditing)
{
DrawingState = DrawingState.Normal;
IsSelected = false;
}
}
}