GetBarIdxByX()

Definition

Returns the ChartBars index value at a specified x-coordinate relative to the ChartControl.

Method Return Value

An int value representing the bar index.

Syntax

ChartBars.GetBarIdxByX(ChartControl chartControl, int x)

Method Parameters

Parameter	Description
chartControl	The ChartControl object used to determine the chart’s time axis
x	The x-coordinate used to find a bar index value

Examples

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
   // get the users mouse down point and convert to device pixels for DPI accuracy
   int mousePoint = chartControl.MouseDownPoint.X.ConvertToHorizontalPixels(chartControl.PresentationSource);
   
   // convert mouse point to bar index
   int barIdx = ChartBars.GetBarIdxByX(chartControl, mousePoint);
   
   Print("User clicked on Bar #" + barIdx);
}