🚀 go-pugleaf

In article <dsmith.717909971@aa.cad.slb.com> dsmith@aa.cad.slb.com (J. Daniel Smith) writes:
>How can I tell with absolute certainty if a printer can print in
>color?  With Level 1 PostScript a solution that probably almost always
>worked was to check for something like "setcmykcolor" since that
>operator was only available on color printers.  However, using Level 2
>PostScript, "setcmykcolor" is supported in all implemtations; its up
>to the rendering mechanism to determine how best to render the color.


Carl Orthlieb <orthlieb@adobe.com> posted the following awhile back.

-- Rich


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The following code determines the number of device colors that a device has:
	0 - Unknown
	1 - Black and White
	3 - RGB or CMY
	4 - CMYK 

Hope this helps, Carl 8^)

%!
% Determine the number of device colors
/NDColors 1 def	% This will be the value if colorimage does not exist
/colorimage where {
	pop
	/NDColors 0		% Unknown
	statusdict begin 
		/processcolors where { 
			pop pop processcolors 
		}{
			/deviceinfo where { 
				pop deviceinfo /Colors known { 
					pop deviceinfo /Colors get 
				} if
			} if
		} ifelse
	end		% statusdict
	def
} if
(Number of Device Colors: ) print NDColors =

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