MapControl.CalcHitInfo(Point) Method
Returns information on the map elements located at the specified point.
Namespace: DevExpress.XtraMap
Assembly: DevExpress.XtraMap.v22.1.dll
NuGet Package: DevExpress.Win.Map
Declaration
Parameters
Name | Type | Description |
---|---|---|
hitPoint | Point | The hit point, relative to the map’s top-left edge integer screen coordinates. |
Returns
Type | Description |
---|---|
MapHitInfo | The object containing information about the map elements located at the hit point. |
Remarks
Use the CalcHitInfo method to determine which element is located at the specified hit point. For instance, this can be used when handling the map’s MouseDown event to determine which element was clicked. In such cases, pass the current mouse pointer’s coordinates as the method’s parameter.
Note
The returned MapHitInfo object does not contain the test point location in map coordinates. To obtain the location, use the MapControl.ScreenPointToCoordPoint method.
Example
mapControl1.MouseClick += OnMapControlMouseClick;
//...
private void OnMapControlMouseClick(object sender, MouseEventArgs e) {
MapHitInfo info = mapControl1.CalcHitInfo(e.Location);
if (info.InMapSpline) {
gridControl1.DataSource = info.MapSpline.Points;
}
}