textView(_:draggedCell:in:event:at:)
Sent when the user attempts to drag a cell.
Declaration
@MainActor optional func textView(_ view: NSTextView, draggedCell cell: any NSTextAttachmentCellProtocol, in rect: NSRect, event: NSEvent, at charIndex: Int)Parameters
- view:
The text view sending the message.
- cell:
The cell being dragged.
- rect:
The rectangle from which the cell was dragged.
- event:
The mouse-down event that preceded the mouse-dragged event.
- charIndex:
The character position where the mouse button was clicked.
Discussion
The delegate can use this message as its cue to initiate a dragging operation.