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xor_mode(3)                     Allegro manual                     xor_mode(3)

NAME
       xor_mode - Shortcut for toggling xor drawing mode on and off. Allegro
       game programming library.

SYNOPSIS
       #include <allegro.h>

       void xor_mode(int on);

DESCRIPTION
       This is a shortcut for toggling xor drawing mode on and off. Calling
       xor_mode(TRUE) is equivalent to drawing_mode(DRAW_MODE_XOR, NULL, 0,
       0).  Calling xor_mode(FALSE) is equivalent to
       drawing_mode(DRAW_MODE_SOLID, NULL, 0, 0).

SEE ALSO
       drawing_mode(3), exspline(3), exupdate(3)

Allegro                          version 4.4.2                     xor_mode(3)