selectionManagerWillBeginSelection(_:)
Tells the delegate that a selection gesture is about to begin.
Declaration
optional func selectionManagerWillBeginSelection(_ selectionManager: NSTextSelectionManager)Parameters
- selectionManager:
The selection manager that is about to begin selection.
Discussion
The selection manager calls this method after selectionManager:shouldBeginSelectionAtPoint: returns YES (or if that method isn’t implemented) and before any selection changes are made.