func (v *Adjustment) SetStepIncrement(value float64) {
	C.gtk_adjustment_set_step_increment(v.native(), C.gdouble(value))
}
func (v *Adjustment) SetStepIncrement(value float64) {
	C.gtk_adjustment_set_step_increment(v.native(), C.gdouble(value))
}
// SetStepIncrement is a wrapper around gtk_adjustment_set_step_increment().