windowsforms-devexpress-dot-xtracharts-dot-chartcontrol-dot-calchitinfo-x28-system-dot-drawing-dot-point-system-dot-boolean-x29.md
Returns information on the chart elements located at the specified point.
Namespace : DevExpress.XtraCharts
Assembly : DevExpress.XtraCharts.v25.2.UI.dll
NuGet Package : DevExpress.Win.Charts
public ChartHitInfo CalcHitInfo(
Point point,
bool forceUpdate = true
)
Public Function CalcHitInfo(
point As Point,
forceUpdate As Boolean = True
) As ChartHitInfo
| Name | Type | Description |
|---|---|---|
| point | Point |
The hit point, relative to the chart’s top-left edge integer screen coordinates.
|
| Name | Type | Default | Description |
|---|---|---|---|
| forceUpdate | Boolean | True |
The value that specifies that all update commands that the Chart currently collects should be executed immediately instead of before the control ‘s next rendering.
|
| Type | Description |
|---|---|
| ChartHitInfo |
The information about the item in the test point.
|
Use the CalcHitInfo method to determine which element is located at the point with the specified coordinates. For example, you can use this method in the chart’s Click event handler to determine clicked element. In this case, pass the current mouse pointer’s coordinates as the method’s parameter.
Important
Make sure that the ChartControl.RuntimeHitTesting property is set to true to enable hit testing at runtime.
The Chart Control supports only 2D Chart Types hit testing and does not support hit testing for 3D Chart Types.
The following code snippets (auto-collected from DevExpress Examples) contain references to the CalcHitInfo(Point, Boolean) method.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
{
ChartHitInfo hitInfo = chart.CalcHitInfo(e.Location);
if (hitInfo.InSeriesPoint)
void MouseDoubleClick(object sender, MouseEventArgs e) {
ChartHitInfo hitInfo = chart.CalcHitInfo(e.Location);
if(hitInfo.InSeriesPoint) {
Private Sub MouseDoubleClick(ByVal sender As Object, ByVal e As MouseEventArgs)
Dim hitInfo As ChartHitInfo = chart.CalcHitInfo(e.Location)
If hitInfo.InSeriesPoint Then
Private Sub MouseDoubleClick(ByVal sender As Object, ByVal e As MouseEventArgs)
Dim hitInfo As ChartHitInfo = chart.CalcHitInfo(e.Location)
If hitInfo.InSeriesPoint Then
See Also