man save_bmp () - Saves a bitmap into a BMP file. Allegro game programming library.
NAME
save_bmp - Saves a bitmap into a BMP file. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int save_bmp(const char *filename, BITMAP *bmp, const RGB *pal);
DESCRIPTION
Writes a bitmap into a 256-color or 24-bit truecolor BMP file.
RETURN VALUE
Returns non-zero on error.