getg16 (3) - Linux Manuals
getg16: Extract a color component from the specified pixel format. Allegro game programming library.
NAME
getr8, getg8, getb8, getr15, getg15, getb15, getr16, getg16, getb16, getr24, getg24, getb24, getr32, getg32, getb32 - Extract a color component from the specified pixel format. Allegro game programming library.SYNOPSIS
#include <allegro.h>
int getr8(int c);
int getg8(int c);
int getb8(int c);
int getr15(int c);
int getg15(int c);
int getb15(int c);
int getr16(int c);
int getg16(int c);
int getb16(int c);
int getr24(int c);
int getg24(int c);
int getb24(int c);
int getr32(int c);
int getg32(int c);
DESCRIPTION
Given a color in a display dependent format, these functions extract one of the red, green, or blue components (ranging 0-255). Example:
int r, g, b, color_value; color_value = _getpixel15(screen, 100, 100); r = getr15(color_value); g = getg15(color_value); b = getb15(color_value);