<CategoryAttribute("Layout")>
Public Property HeaderFontSize As Double

Dim instance As GroupBox
Dim value As Double
 
instance.HeaderFontSize = value
 
value = instance.HeaderFontSize

[CategoryAttribute("Layout")]
public double HeaderFontSize {get; set;}

public read-write property HeaderFontSize: Double; 

CategoryAttribute("Layout")
public function get,set HeaderFontSize : double

[CategoryAttribute("Layout")]
public: __property double get_HeaderFontSize();
public: __property void set_HeaderFontSize( 
   double value
);

[CategoryAttribute("Layout")]
public:
property double HeaderFontSize {
   double get();
   void set (    double value);
}