For Internal Use Only. Removes any columns and rows from the grid-bag that do not have any items. In other words, if there isn't any item that is on or goes through a row or a column, then the originX's and originY's of the items will be adjusted to get rid of such a column or a row.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2