Color2Index

Find the best possible color match

#include <Quickdraw.h> Color Manager

RGBColor *rgb ; requested color

returns the “reference constant” of a control

Color2Index uses the list of search procedures in the current device record

to come up with the closest possible match for a requested RGBColor.

rgb is the absolute color requested by the application

Returns: a 4-byte long; a padded pixel value filled out with zeros in the high

word.

Notes: Color2Index is a color conversion function that returns a padded pixel

value with zeros in the high word. Because the colorSpec.value field too

short by half, the low word of Color2Index's result is truncated to fit into

the colorSpec. The .value field of a PixMap would be the low-order word

of this index.

Don't have your application call this function from a custom search

procedure.

Referenced by (13):