Returns in the integers pointed to by 'pr', 'pg', 'pb' the R-G-B values of the pixel at location ('x','y') in the image 'pmi'
Returns in the integers pointed to by 'pr', 'pg', 'pb' the R-G-B values of the pixel at location ('x','y') in the image 'pmi'. This function works for palette based images (depth of 2, 4, 8) and for true color images (depth of 24).
Copyright 1996-1998 Vincenzo Morello
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