Asks the delegate for the height of the specified row.
- macOS 10.4+
The table view that sent the message.
The row index.
The height of the row. The height should not include intercell spacing and must be greater than zero.
You should implement this method if your table supports varying row heights.
Although table views may cache the returned values, you should ensure that this method is efficient. When you change a row's height you must invalidate the existing row height by calling
NSTable automatically invalidates its entire row height cache when
note are called.