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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 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);

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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