ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / MapView Class / ScreenToMap Method
The point value in screen coordinates.
Example Version

ScreenToMap Method (MapView)
Converts a point in screen coordinates to a point in the coordinates of the map or scene. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public MapPoint ScreenToMap( 
   Point screenPoint
)

Parameters

screenPoint
The point value in screen coordinates.

Return Value

The converted point in map coordinates.
Exceptions
ExceptionDescription
This method or property must be called within the lambda passed to QueuedTask.Run.
Example
Calculate Selection tolerance in map units
//Selection tolerance for the map in pixels
var selectionTolerance = SelectionEnvironment.SelectionTolerance;
QueuedTask.Run(() =>
{
  //Get the map center
  var mapExtent = MapView.Active.Map.GetDefaultExtent();
  var mapPoint = mapExtent.Center;
  //Map center as screen point
  var screenPoint = MapView.Active.MapToScreen(mapPoint);
  //Add selection tolerance pixels to get a "radius".
  var radiusScreenPoint = new System.Windows.Point((screenPoint.X + selectionTolerance), screenPoint.Y);
  var radiusMapPoint = MapView.Active.ScreenToMap(radiusScreenPoint);
  //Calculate the selection tolerance distance in map uints.
  var searchRadius = GeometryEngine.Instance.Distance(mapPoint, radiusMapPoint);
});
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also