GridPanel celldblclick
gc.on('celldblclick', function(item,td,cellIndex,record,tr,rowIndex,e) {
let fed=item.ownerGrid.getColumns()[cellIndex].dataIndex;
//do what u want
});
gc.on('celldblclick', function(item,td,cellIndex,record,tr,rowIndex,e) {
let fed=item.ownerGrid.getColumns()[cellIndex].dataIndex;
//do what u want
});