Colors

FLTK stores the colors of widgets as an 8-bit number that is an index into a color palette of 256 colors. This is not the X or WIN32 colormap, but instead is an internal table with fixed contents.

There are symbols for naming some of the more common colors:

• FL_BLACK (this is the default label color)

• FL_RED

• FL_GREEN

• FL_YELLOW

• FL_BLUE

• FL_MAGENTA

• FL_WHITE (this is the default background color of text widgets)

• FL_GRAY (this is the default background color of most widgets)

The widget color can be set using the color() method:

button->color(FL_RED);
      

Similarly, the label color can be set using the labelcolor() method:

button->labelcolor(FL_WHITE);