SetCPixel
#include <Quickdraw.h> Color Quickdraw
short horiz ; horizontal position, in local coordinates
short vert ; vertical coordinate
RGBColor *cPix ; color pixel at specified position SetCPixel gives the pixel value that best matches the specified RGB to the pixel at an associated coordinate location.
horiz and . . .
vert identify the pixel in question (which hangs below and to the right
of the specified point). These are expressed in the coordinate
color is the RGB color of the pixel.