// Constructor Non-Slider
 public ControlWidget(string name,
                      ControlWidgetType type,
                      object value)
 {
     name_  = name;
     type_  = type;
     value_ = value;
 }
 // Constructor Slider
 public ControlWidget(string name,
                      ControlWidgetType type,
                      object value,
                      double min,
                      double max)
 {
     name_      = name;
     type_      = type;
     value_     = value;
     sliderMin_ = min;
     sliderMax_ = max;
 }