gtk:scale-button-new (size min max step icons)

size -- a value of the gtk:icon-size enumeration
min -- a number coerced to a double float for the minimum value of the scale
max -- a number coerced to a double float for the maximum value of the scale
step -- a number coerced to a double float for the stepping of the value when a scroll-wheel event, or up/down arrow event occurs
icons -- a list of strings for the icon names, or nil if you want to set the list later with the gtk:scale-button-icons function

The new gtk:scale-button widget.

Creates a scale button, with a range between min and max, with a stepping of step.