Cheers

Hi Roger,

 

 

FLTK uses these colors for these tasks :

    FL_BACKGROUND_COLOR - the default background color
    FL_BACKGROUND2_COLOR - the default background color for
        text, list, and valuator widgets
    FL_FOREGROUND_COLOR - the default foreground color (0) used
       for labels and text
    FL_INACTIVE_COLOR - the inactive foreground color
    FL_SELECTION_COLOR - the default selection/highlight color

You can change their values by calling
   void Fl::set_color(Fl_Color i, unsigned c)
with i set to, say, FL_BACKGROUND_COLOR and c to a predefined color name,
say, FL_YELLOW;
or by calling
   void Fl::set_color(Fl_Color i, uchar r, uchar g, uchar b)
with i as above and r,g,b set to an RGB value (r, g and b should be in the range [0..255])

All widgets use this font size for their text
Fl_Fontsize FL_NORMAL_SIZE = 14;
you can change the value of this public global variable.

Widgets use FL_HELVETICA as default font. You can change the font associated
to this numerical value by calling
Fl::set_font(FL_HELVETICA, "name-of-a-font-as-given-by-test-program-fonts");

but caution that font names tend to be platform-specific.