ButtonO Class Constructors

  /*---------------------------------------------------

      Default construtor (empty)
      - raylib default font

   ----------------------------------------------------*/
  ButtonO();

  /*---------------------------------------------------

      Constructor-1
      - raylib default font
      text, position

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y);

  /*------------------------------------------------------------

      Constructor-2
      - raylib default font
      text, position, font size

      Note: the font size will modify the size of the button

   -------------------------------------------------------------*/
  ButtonO(string text, float x, float y, float fontSize);

  /*---------------------------------------------------

      Constructor-3
      - raylib default font
      text, position, font size, font color,
      button color

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y, float fontSize, Color fontColor, Color btnColor);

  /*---------------------------------------------------

      Constructor-4
      - raylib default font
      text, position, font size, font color,
      button color, border color

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y, float fontSize, Color fontColor, Color btnColor, Color borderColor);

  /*---------------------------------------------------

      Constructor-5
      - loaded font
      text, position, font

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y, Font &font);

  /*---------------------------------------------------

      Constructor-6
      - loaded font
      text, position, font, font size

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y, Font &font, float fontSize);

  /*---------------------------------------------------

      Constructor-7
      - loaded font
      text, position, font, font size, font color,
      button color

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y, Font &font, float fontSize, Color fontColor, Color btnColor);

  /*---------------------------------------------------

      Constructor-8
      - loaded font
      text, position, font, font size, font color,
      button color, border-color

   ----------------------------------------------------*/
  ButtonO(string text, float x, float y, Font &font, float fontSize, Color fontColor, Color btnColor, Color borderColor);


  /*---------------------------------------------------

      constructor-9
      - loaded font
      text, font, font size

   ----------------------------------------------------*/
  ButtonO(string text, Font &font, float fontSize);