Event fired every time the column chooser changes its position. The handler function takes arguments evt and ui. Use ui.owner to get the reference to the igGridHiding widget. Use ui.owner.grid to get the reference to the igGrid widget. Use ui.columnChooserElement to get a reference to the Column Chooser element. This is a jQuery object. Use ui.originalPosition to get the original position of the column chooser div as { top, left } object, relative to the page. Use ui.position to get the current position of the column chooser div as { top, left } object, relative to the page.
Target Platforms: Windows 8.1, Windows 8.1, Windows 8, 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