I'm trying to create an about box for my Mac 4.3.7 application, so I need to display an icon some transparent areas. I tried passing a color for the :transparent-color-index keyword of gp:read-external-image, but I get an error: NIL is not of type ARRAY. Is this a bug or is there something else I need to do? Thanks, John DeSoi, Ph.D.
On Oct 18, 2004, at 11:33 AM, John DeSoi wrote: > I'm trying to create an about box for my Mac 4.3.7 application, so I > need to display an icon some transparent areas. I tried passing a > color for the :transparent-color-index keyword of > gp:read-external-image, but I get an error: NIL is not of type ARRAY. I figured it out -- the image must be 256 or fewer colors to use :transparent-color-index. Best, John DeSoi, Ph.D.