If it is set to true, the action is canceled
If it is set to true, the column is inserted before the drop target; otherwise, it is inserted after the target
The drop target column. If the value is a string, it indicates the current reorder target is a column group and the value is the group caption. If the value is a number, it indicates the reorder column is a single column and the index is in the IGrid.columns collection
The original index of the reordered column. If the value is string, it indicates the current reorder target is a column group and the value is the group caption. If the value is a number, it indicates the reorder column is a single column and the index is in the IGrid.columns collection
Indicates the editing status. The status can be 'beforeColumnReorder' and 'endColumnReorder'.
Defines arguments of the event that occurs when the user starts dragging the column and before dropping the column in the column header