man clear_to_color (3): Clears the bitmap to the specified color. Allegro game programming library.

clear_to_color(3) Clears the bitmap to the specified color. Allegro game programming library.

SYNOPSIS

#include <allegro.h>

void clear_to_color(BITMAP *bitmap, int color);

Clears the bitmap to the specified color. Example:

   /* Clear the screen to red. */
   clear_to_color(bmp, makecol(255, 0, 0));