getg (3) - Linux Manuals
getg: Extract a color component from the current pixel format. Allegro game programming library.
Command to display getg manual in Linux: $ man 3 getg
NAME
getr, getg, getb, geta - Extract a color component from the current pixel format. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int getr(int c);
int getg(int c);
int getb(int c);
int geta(int c);
DESCRIPTION
Given a color in the format being used by the current video mode, these
functions extract one of the red, green, blue, or alpha components
(ranging 0-255), calling the preceding 8, 15, 16, 24, or 32-bit get
functions as appropriate. The alpha part is only meaningful for 32-bit
pixels. Example:
int r, g, b, color_value;
color_value = getpixel(screen, 100, 100);
r = getr(color_value);
g = getg(color_value);
b = getb(color_value);
Pages related to getg
- getg8 (3) - Extract a color component from the specified pixel format. Allegro game programming library.
- getg15 (3) - Extract a color component from the specified pixel format. Allegro game programming library.
- getg16 (3) - Extract a color component from the specified pixel format. Allegro game programming library.
- getg24 (3) - Extract a color component from the specified pixel format. Allegro game programming library.
- getg32 (3) - Extract a color component from the specified pixel format. Allegro game programming library.
- getg_depth (3) - Extract a color component from a color in a specified pixel format. Allegro game programming library.
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- getgrgid (3) - get group file entry
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- getgrnam (3) - get group file entry
- getgrnam_r (3) - get group file entry