ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / TOCDragData Interface / InProcess Property

InProcess Property
Gets whether the drag was initiated within the current Pro process.
Syntax
bool InProcess {get;}
Remarks
If InProcess is false, DraggedContent will be empty
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.5 or higher.
See Also