GtkRange Base class for widgets which visualize an adjustment @range: @Returns: @range: @policy: @range: @adjustment: @range: @Returns: @range: @setting: @range: @Returns: @range: @Returns: @range: @step: @page: @range: @min: @max: @range: @value: @range: the object which received the signal. @arg1: Virtual function that moves the slider. Used for keybindings. @range: the #GtkRange @arg1: @step: how to move the slider @arg2: Emitted when the range value changes. @range: the #GtkRange