13.8 Examples of Simple Drawing Effects

  • Drawing in the foreground color.
  • Erasing.
  • Drawing in color.
  • Drawing an opaque gray.
  • Drawing in the foreground color.

    Use the default, or specify :ink +foreground-ink+.


    Specify :ink +background-ink+.

    Drawing in color.

    Specify :ink +green+, :ink (make-rgb-color 0.6 0.0 0.4), and so forth.

    Drawing an opaque gray.

    Specify :ink (make-gray-color 0.25) to draw in a shade of gray independent of the window's foreground color. On a non-color, non-grayscale display this will generally turn into a stipple.