onBeforeColumnDropOrder

fires the moment you drop the column over the target area

function onBeforeColumnDropOrder(
    // the source column id
    sourceId: string,
    // the target column id
    targetId: string,
    // the native event object
    event: Event
): void

Example

datagrid1.attachEvent("onBeforeColumnDropOrder",
  function(src, targ, event){
    // some code
    return true;
  });

also check the next samples:

• DataGrid: Column Order DnD

Details

The event is blockable. Returning false will prevent column from being dropped if the order mode is enabled.

See also

Articles

• Drag-and-drop with DataGrid

API

• onAfterColumnDropOrder