Catello,
>I need some information about library "CLIPPER PDF" developed by Victor
K.
>I have a procedure that print a report with several columns.
>Now I am modifying the procedure to create a PDF file of the report.
>
>I have some question:
>
>1) What is the coordinate system that I have to use with the
function
>pdfAtSay ?
The default is rows and columns like you normally use. But you can
also use millimeters if you pass an "M" in the cUnits argument.
>2) I see that in this function there is a transformation of the
>parameters nRow and nCol. What is the meaning of this ?
The coordinate system in the PDF file is upside down with a resolution
of 72 DPI. So if you specify nRow==10 it has to be converted to, say,
70 lines (page length) minus 10 lines equaling 60 lines from the
bottom. Then at 6 lines per inch and 72 DPI the resulting vertical
position will be 720 dots from the bottom. Or something like that ...
nCol is a little different. IIRC, it calculates the percentage of the
report width (previously specified) at which your nCol is located.
This means that when you use long lines the whole page will be
compressed sidewise, and data from different columns in the report
will pe printed on top of each other if the column gap is small.
Personally, I think that solution is a little too smart.
>3) When I print the report to a printer I know the width of a column
>because I multiply the max number of the character and the size of the
>printer's character. May I do the same thing with PDF file ? I don't
>understand the way.
Yes, but make sure that the report width (the nLen argument to the
pdfOpen() function) corresponds with the actual report width your
pdfAtSay() calls require.
>4) I have read somewhere that exist a version 0.8 of the library.
Where
>can I download it ?
AFAIK, it is not available anywhere on the web anymore. But I can
email a copy to you if you give me a valid email address.
BTW, there is a demo included in the package. Use it to familiarize
yourself with the different options and to test the things you asked
about. Much easier than to start from scratch.
Regards,
Klas
-------
klas dot engwall at engwall dot com
http://www.engwall.com/clipper/
The LFN Library for Clipper
The LanMan Library for Clipper
The NFPAT1A Timeslice release patch for the Nanforum Toolkit
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