Package com.google.gwt.event.dom.client

## Interface HasMouseWheelHandlers

- All Superinterfaces:
    `HasHandlers`
  All Known Subinterfaces:
    `DialogBox.Caption`, `HasAllMouseHandlers`
  All Known Implementing Classes:
    `Anchor`, `Audio`, `Button`, `ButtonBase`, `Canvas`, `CheckBox`, `CustomButton`, `DialogBox.CaptionImpl`, `DoubleBox`, `FileUpload`, `FocusPanel`, `FocusWidget`, `HTML`, `Image`, `InlineHTML`, `InlineLabel`, `IntegerBox`, `Label`, `ListBox`, `LongBox`, `MediaBase`, `PasswordTextBox`, `PushButton`, `RadioButton`, `ResetButton`, `RichTextArea`, `SimpleCheckBox`, `SimpleRadioButton`, `SubmitButton`, `TextArea`, `TextBox`, `TextBoxBase`, `ToggleButton`, `Tree`, `ValueBox`, `ValueBoxBase`, `Video`

      public interface HasMouseWheelHandlers
      extends HasHandlers

  A widget that implements this interface provides registration for `MouseWheelHandler` instances.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `HandlerRegistration` | `addMouseWheelHandler​(MouseWheelHandler handler)` | Adds a `MouseWheelEvent` handler.

    - ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

      `fireEvent`

- - ### Method Detail

    - #### addMouseWheelHandler

          HandlerRegistration addMouseWheelHandler​(MouseWheelHandler handler)

      Adds a `MouseWheelEvent` handler.
      Parameters:
        `handler` - the mouse wheel handler
      Returns:
        `HandlerRegistration` used to remove this handler