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getr(3) 			 Allegro manual 			 getr(3)

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 ap-
     propriate. 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);

SEE ALSO
     getr8(3), getr_depth(3), makecol(3), set_color_depth(3), exalpha(3)

Allegro 			  version 4.4.3 			 getr(3)

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