Legacy Documentation: Version 4.3.0
HandleUtility.AddControl
static function AddControl(controlId: int, distance: float): void;
static void AddControl(int controlId, float distance);
static def AddControl(controlId as int, distance as float) as void
Description

Record a distance measurement from a handle.

All handles call this with their controlID during layout, then use nearestControl to check if they got the mouseDown.