DOKK / manpages / debian 10 / allegro4-doc / xor_mode.3alleg4.en
xor_mode(3alleg4) Allegro manual xor_mode(3alleg4)

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

#include <allegro.h>

void xor_mode(int on);

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).

drawing_mode(3alleg4), exspline(3alleg4), exupdate(3alleg4)

version 4.4.2 Allegro