# Yahoo! UI Library

### DataTable Widget 2.8.1

Yahoo! UI Library > datatable > YAHOO.util.ColumnDD
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## Class YAHOO.util.ColumnDD - extends YAHOO.util.DDProxy

ColumnDD subclasses DragDrop to support rearrangeable Columns.

### Constructor

YAHOO.util.ColumnDD `( oDataTable , oColumn , elTh , elTarget )`

Parameters:
  `oDataTable <YAHOO.widget.DataTable>` DataTable instance.
  `oColumn <YAHOO.widget.Column>` Column instance.
  `elTh <HTMLElement>` TH element reference.
  `elTarget <HTMLElement>` Drag target element.

#### Properties inherited from YAHOO.util.DDProxy:

`centerFrame, resizeFrame`

#### Properties inherited from YAHOO.util.DD:

`scroll`

#### Properties inherited from YAHOO.util.DragDrop:

`__ygDragDrop, _domRef, available, config, constrainX, constrainY, cursorIsOver, deltaX, deltaY, dragElId, dragOnly, events, groups, handleElId, hasOuterHandles, id, invalidHandleClasses, invalidHandleIds, invalidHandleTypes, isTarget, locked, maintainOffset, maxX, maxY, minX, minY, overlap, padding, primaryButtonOnly, startPageX, startPageY, useShim, xTicks, yTicks`

#### Methods inherited from YAHOO.util.DDProxy:

`_resizeProxy, createFrame, initFrame, showFrame`

#### Methods inherited from YAHOO.util.DD:

`alignElWithMouse, autoOffset, autoScroll, cachePosition, setDelta, setDragElPos`

#### Methods inherited from YAHOO.util.DragDrop:

`addInvalidHandleClass, addInvalidHandleId, addInvalidHandleType, addToGroup, applyConfig, b4Drag, b4DragDrop, b4DragOut, b4DragOver, b4EndDrag, b4MouseDown, b4StartDrag, clearConstraints, clearTicks, clickValidator, endDrag, getDragEl, getEl, getTargetCoord, getTick, handleMouseDown, handleOnAvailable, init, initTarget, isLocked, isValidHandleChild, lock, on, onAvailable, onDrag, onDragDrop, onDragEnter, onDragOut, onDragOver, onInvalidDrop, onMouseDown, onMouseUp, removeFromGroup, removeInvalidHandleClass, removeInvalidHandleId, removeInvalidHandleType, resetConstraints, setDragElId, setHandleElId, setInitialPosition, setOuterHandleElId, setPadding, setStartPosition, setXConstraint, setXTicks, setYConstraint, setYTicks, startDrag, toString, unlock, unreg`

#### Events inherited from YAHOO.util.DDProxy:

`b4DragDropEvent, b4DragEvent b4DragOutEvent b4DragOverEvent b4EndDragEvent b4MouseDownEvent b4StartDragEvent dragDropEvent dragEnterEvent dragEvent dragOutEvent dragOverEvent endDragEvent invalidDropEvent mouseDownEvent mouseUpEvent startDragEvent`

#### Events inherited from YAHOO.util.DD:

`b4DragDropEvent, b4DragEvent, b4DragOutEvent b4DragOverEvent b4EndDragEvent b4MouseDownEvent b4StartDragEvent dragDropEvent dragEnterEvent dragEvent dragOutEvent dragOverEvent endDragEvent invalidDropEvent mouseDownEvent mouseUpEvent startDragEvent`

#### Events inherited from YAHOO.util.DragDrop:

`b4DragDropEvent, b4DragEvent, b4DragOutEvent, b4DragOverEvent, b4EndDragEvent, b4MouseDownEvent, b4StartDragEvent, dragDropEvent, dragEnterEvent, dragEvent, dragOutEvent, dragOverEvent, endDragEvent, invalidDropEvent, mouseDownEvent, mouseUpEvent, startDragEvent,`

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