Specify the Control that is to be displayed and the cell in the tree that it is to be positioned above.
*
<p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Tree control
specified in the TreeEditor constructor.
*
@param editor the Control that is displayed above the cell being edited
@param item the TreeItem for the row of the cell being tracked by this editor
@param column the zero based index of the column of the cell being tracked by this editor
*
@since 3.1
Specify the Control that is to be displayed and the cell in the tree that it is to be positioned above. * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Tree control specified in the TreeEditor constructor. * @param editor the Control that is displayed above the cell being edited @param item the TreeItem for the row of the cell being tracked by this editor @param column the zero based index of the column of the cell being tracked by this editor * @since 3.1