Inserts a new row of cells before the specified row.
- macOS 10.0+
The location at which to insert the new row. If this is greater than the number of rows in the receiver, enough rows are created to expand the receiver to be
New cells are created if needed with
make. This method redraws the receiver. Your code may need to send
size after sending this method to resize the receiver to fit the newly added cells.
If the number of rows or columns in the receiver has been changed with
renew, then new cells are created only if they’re needed. This fact allows you to grow and shrink an
NSMatrix without repeatedly creating and freeing the cells.