After dragging has begun, this method is called repeatedly by the dnprdnshort until the drag operation is either canceled or completed.

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The Control.OnQueryContinueDrag(QueryContinueDragEventArgs) method also enables derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.