OK, so I have and PDF file with some white text according to my own programm, and it seems to be set to overprinting.
I have asked about this subject before, but failed to make myself clear enough. This question will be more clear, at least I hope.
This is the file in question: http://www.4shared.com/document/Sn7nSydh/error_detected.html
In that file the Adobe PreFlight is NOT detecting white text that is set to overprint, but my own code does...
And this file the Adobe PreFlight and my own code agree, there is white text that is set to overprint: http://www.4shared.com/document/S9-3F59t/GWG_test_file.html
So now for my question. Were am I going wrong? I think I must seek the error in the colors. So we have two colors when puting out text in a PDF; stroking and non-stroking. When the stroking is set to CMYK(0, 0, 0, 0) and the non-stroking is set to CMYK(0,0,0,1) then we really have white text, and when the Graphic State op (overprint) is set to True, the text is set to overprint...
When the stroking is set to CMYK(0,0,0,0) and the non-stroking is set to somthing like CMYK(0.1, 0.4, 0.5, 0.9) the text is not white, so we are done checking??
I you can bare with me one this one. Thanks!