public interface HasMouseWheelHandlers extends HasHandlers
MouseWheelHandler instances.| Modifier and Type | Method and Description | 
|---|---|
| HandlerRegistration | addMouseWheelHandler(MouseWheelHandler handler)Adds a  MouseWheelEventhandler. | 
fireEventHandlerRegistration addMouseWheelHandler(MouseWheelHandler handler)
MouseWheelEvent handler.handler - the mouse wheel handlerHandlerRegistration used to remove this handler