GetClosestAnchor()

Definition

Returns the closest chart anchor within a specified maximum distance from the mouse cursor.

Method Return Value

This method returns an existing ChartAnchor.

Syntax

GetClosestAnchor(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, double maxDist, Point point)

Method Parameters

Parameter	Description
chartControl	A ChartControl representing the x-axis
chartPanel	A ChartPanel representing the panel for the chart
chartScale	A ChartScale representing the y-axis
maxDist	A double value representing the cursor’s sensitivity used to detect the nearest anchor
point	A Point in device pixels representing the current mouse cursor position

Examples

1 public override Cursor GetCursor(ChartControl chartControl, ChartPanel chartPanel, ChartScale chartScale, Point point)
2 {
3    // get the closest anchor to where the user has clicked
4    ChartAnchor closest = GetClosestAnchor(chartControl, chartPanel, chartScale, 10, point);
5 
6    if (closest != null)
7    {
8      // set cursor to indicate that it can be moved
9      return Cursors.SizeNWSE;
10    }
11    // otherwise set cursor back to arrow
12    else return Cursors.Arrow;