fires the moment you start dragging the column from its source position

void onBeforeColumnDrag(string sourceId,Event object event);
sourceIdstringthe source column id
eventEvent objectthe native event object


$$("datatable1").attachEvent("onBeforeColumnDrag", function(sourceId, event){
    // some code
    return true;


The event is blockable. Returning false will prevent column dragging.

See also
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