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June 2005
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2005.06.21 09:17 "Tiff-Tags and Delphi7 / X and Y RESOLUTION / PHOTOMETRIC", by Matthias Lach
Hello All! First i need to say a kind "THANK THEE" for helping me out with my newbie problems. I solved the invertproblem with changing the PHOTOMETRIC_MINISWHITH into a MINISBLACK - what ever the problem was - i have a nice looking image now. For some reason i like to implemetn a check box in my form, that - if ist check change the PHOTOMETRIC-value. So i put a sting "minis" with "PHOTOMETRIC_MINISWHITH" and used TIFFSetField(tifbild, TIFFTAG_PHOTOMETRIC, minis); BUT - that does not work. the outputfile as the value "unknown 26696" as Photometric. I can use variables for the value "TIFFSetField(tifbild, TIFFTAG_IMAGEWIDTH, width)" and it workes fine. why not for Photometric? other thing/question: i read TIFFGetField(OpenTiff,TIFFTAG_XRESOLUTION,@FirstPageXReso) and TIFFGetField(OpenTiff,TIFFTAG_YRESOLUTION,@FirstPageYReso), put it in public variables of cardinal type. i get x= 1129054208 and Y=1128529920 from a file that is x=204 dpi and y= 196 dpi. if i want to wirte back these values all i get back is ZERO "0" (opend with AsTiffTagViewer). TIFFSetField(tifbild, TIFFTAG_XRESOLUTION, FirstPageXReso); TIFFSetField(tifbild, TIFFTAG_YRESOLUTION, FirstPageYReso); (same values as read from original file) there must be a little error in reasoning on my side i guess... but.. wehre? :-) Can Someone please point me into right direction? thank thee all --- Mit freundlichen Gruessen Matthias Lach