pdftoppm.hlp

这是一个做pdf阅读器的源代码文件,是大家学习阅读器资料的很好参考

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1 pdftoppm

       pdftoppm  -  Portable  Document  Format  (PDF) to Portable
       Pixmap (PPM)

       pdftoppm [options] PDF-file PPM-root

       Pdftoppm converts Portable Document Format (PDF) files  to
       color   image  files  in  Portable  Pixmap  (PPM)  format,
       grayscale image files in Portable Graymap (PGM) format, or
       monochrome image files in Portable Bitmap (PBM) format.

       Pdftoppm  reads the PDF file, PDF-file, and writes one PPM
       file for each page, PPM-root-nnnnnn.ppm, where  nnnnnn  is
       the page number.

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2 ONFIGURATION_FIL

       Pdftoppm  reads a configuration file at startup.  It first
       tries to find the user's private config  file,  ~/.xpdfrc.
       If  that  doesn't exist, it looks for a system-wide config
       file, typically /usr/local/etc/xpdfrc (but  this  location
       can be changed when pdftoppm is built).  See the xpdfrc(5)
       man page for details.

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2 OPTIONS

       Many  of  the following options can be set with configura-
       tion file commands.  These are listed in  square  brackets
       with  the  description  of  the corresponding command line
       option.

       -f number
              Specifies the first page to convert.

       -l number
              Specifies the last page to convert.

       -r number
              Specifies the resolution, in DPI.  The  default  is
              150 DPI.

       -mono  Generate  a monochrome PBM file (instead of a color
              PPM file).

       -gray  Generate a grayscale PGM file (instead of  a  color
              PPM file).

       -t1lib yes | no
              Enable or disable t1lib (a Type 1 font rasterizer).
              This defaults to "yes".  [config file: enableT1lib]

       -freetype yes | no
              Enable  or  disable  FreeType  (a TrueType / Type 1
              font rasterizer).  This defaults to "yes".  [config
              file: enableFreeType]

       -aa yes | no
              Enable   or   disable   font  anti-aliasing.   This
              defaults to "yes".  [config file: antialias]

       -aaVector yes | no
              Enable  or  disable  vector  anti-aliasing.    This
              defaults to "yes".  [config file: vectorAntialias]

       -opw password
              Specify  the owner password for the PDF file.  Pro-
              viding this will bypass all security  restrictions.

       -upw password
              Specify the user password for the PDF file.

       -q     Don't  print any messages or errors.  [config file:
              errQuiet]

       -v     Print copyright and version information.

       -h     Print usage information.   (-help  and  --help  are
              equivalent.)

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2 XIT_CODE

       The Xpdf tools use the following exit codes:

       0      No error.

       1      Error opening a PDF file.

       2      Error opening an output file.

       3      Error related to PDF permissions.

       99     Other error.

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2 AUTHOR

       The  pdftoppm  software  and  documentation  are copyright
       1996-2007 Glyph & Cog, LLC.

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2 SEE_ALSO

       xpdf(1),   pdftops(1),   pdftotext(1),   pdfinfo(1),  pdf-
       fonts(1), pdfimages(1), xpdfrc(5)
       http://www.foolabs.com/xpdf/

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