outlineView(_:mouseDownInHeaderOf:)
Sent to the delegate whenever the mouse button is clicked in outlineView while the cursor is in a column header tableColumn.
Declaration
@MainActor optional func outlineView(_ outlineView: NSOutlineView, mouseDownInHeaderOf tableColumn: NSTableColumn)Parameters
- outlineView:
The outline view that sent the message.
- tableColumn:
The table column.