code: func (win *Window) SliderFloat(min_value float64, value *float64, max_value float64, value_step float64) bool {
  	style := &win.ctx.Style
  	state, bounds, _ := win.widget()
  	if !state {
  		return false
  	}
  	in := win.inputMaybe(state)
  
  	old_value := *value
  	*value = doSlider(win, bounds, min_value, old_value, max_value, value_step, &style.Slider, in)
  	return old_value > *value || old_value < *value
  }
docs: // Adds a slider with a floating point value to win.
  // Returns true when the slider's value is changed.