Assigns a delegate to the dragOver event.
public final void addOnDragOver( DragEventHandler value )
value
The DragEventHandler delegate to be notified when the event occurs.
Passing an event handler as a parameter to this method is equivalent to setting the dragOver event to that method in the Properties window. The dragOver event occurs when the user moves the mouse pointer over the control while dragging an object with the mouse.
See Also removeOnDragOver