gtk:spin-button-range (button)

button -- a gtk:spin-button widget
min -- a number coerced to a double float for the minimum allowable value
max -- a number coerced to a double float for the maximum allowable value

The gtk:spin-button-range function gets the minimum and maximum allowed values for the spin button. The (setf gtk:spin-button-range) function sets the minimum and maximum allowable values.

If the current value is outside this range, it will be adjusted to fit within the range, otherwise it will remain unchanged.