GetBarIdxByX()

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GetBarIdxByX()

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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

chartControl

The ChartControl object used to determine the chart's time axis

x

The x-coordinate used to find a bar index value

 

 

Examples

ns

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);
}