HildonVolumebar Base class for widgets that display a volume bar. #HildonVolumebar is a base class for widgets that display a volume bar that allows increasing or decreasing volume within a pre-defined range, and muting the volume by clicking on a specific mute icon. #HildonHVolumebar,#HildonVVolumebar @self: @level: @self: @Returns: @self: @mute: @self: @Returns: @self: @self: @Returns: @hildonvolumebar: the object which received the signal. @hildonvolumebar: the object which received the signal.