Using the Library
Working with XpdfInfoThe XpdfInfo library uses an opaque handle (type
PDFHandle) to represent a PDF file. Multiple PDF files can be open simultaneously (each with its own handle).
Any program that uses the library must include the XpdfInfo header file:
Using XpdfInfo in a multithreaded applicationIn a multithreaded application, the
pdfInitLibraryfunction must be called before any other functions are called. Unlike in single-thread applications where this is optional, the
pdfInitLibrarycall is required in multithreaded applications. Each PDF handle must be used by only one thread. Given that constraint, all XpdfInfo functions (other than
pdfInitLibrary) are thread-safe.
Compiling & linking on WindowsThe XpdfInfo library is supplied as a DLL (
XpdfInfo.dll) and an import library (
The following instructions are for Microsoft Visual C++ 6. Similar steps should work for other development environments.
- Add the include file directory: in the "Project Settings" dialog,
under the "C/C++" tab, in the "Preprocessor" category, add the library
include file directory (
- Add the import library: in the "Project Settings" dialog, under
the "Link" tab, in the "General" category, add the library
- Either add the library directory (
....\XpdfInfo\lib) to your executable search path, or copy
XpdfInfo.dllinto the same directory as your application's executable.
Compiling & linking on LinuxThe XpdfInfo library is supplied as a shared library (
When compiling C or C++ code that uses the XpdfInfo library, you'll
need to supply a "
-I" flag pointing to the directory
containing the XpdfInfo includes. When linking, you'll need to supply
-L" flag pointing to the directory containing the
XpdfInfo library, and a "
-lXpdfInfo" flag to link with
Before running the application, make sure that the XpdfInfo
library directory is on the library search path. This this can be
done either by setting the
variable or by editing the system-wide
Compiling & linking on Mac OS XUsing XpdfInfo on OS X is very similar to using it on Linux. The shared library has a different extension (
libXpdfInfo.dylib), and you'll need to set the
Example codeThe XpdfInfo library distribution includes two sample programs,
getAllPDFInfo.c, located in the
examplesdirectory. These programs demonstrate the use of the various XpdfInfo functions.
To build on Linux, edit the included Makefile and set the
variables according to the instructions inside the Makefile. Then run
To build on Windows, create a Visual C++ project, as described above.