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ColumnResizeHandleWidth

configuration

Defines the width of the column resize handle in pixels. Apply a larger value for easier grasping.

columnResizeHandleWidth

Number

Default: 3

<div id="gantt"></div>
<script>
$("#gantt").kendoGantt({
  columns: ["title", "start", "end"],
  dataSource: [{
     id: 1,
     orderId: 0,
     parentId: null,
     title: "Task1",
     start: new Date("2014/6/17 9:00"),
     end: new Date("2014/6/17 11:00")
  }],
  resizable: true,
  columnResizeHandleWidth: 6
});
</script>