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

min -- a double float with the minimum value of the scale
max -- a double float with the maximum value of the scale
step -- a double float with the stepping of the value when a scroll wheel event, or up/down arrow event occurs
icons -- a list of strings with 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.