Re: [Podofo-users] Getting Segmentation fault when trying to access PdfVecObjects

[Matthew Brincke]

Hello Georg, hello all,
> On 10 May 2018 at 19:28 Georg Funk  wrote:
> 
> 
> Hi Joerg,
> 
> thanks for this hint.
> 
> I thought maybe I'm misusing PdfObject::Reference() and
> PdfObject::GetReference() in my code This could explain the null
> pointer.
> 
that could also be a problem, however GetObject() returning NULL should
mean that no object with the reference numbers given to the method was
found in the PdfDocument or PdfVecObjects your PdfObject belongs to,
so please check if this is the case (no such object exists). Only if it 
isn't, you could have found a bug in PoDoFo.

> I want to get an object's Reference number by calling
> PdfObject::Reference() and get a pointer to a eventually existing
> indirect object by calling PdfObject::GetReference().
> 
> Is this the correct use case?
> 

Only the former is correct, whereas PdfObject::GetReference() is
inherited from PdfVariant and throws a PdfError exception if
IsReference() returns false, so it is only for "converting"
(de-capsulating) a reference in PdfObject form to PdfReference
(returns a C++ reference to a PdfReference object, no pointer).
 
> Thanks in advance!
> 
> Georg 
> 
> 

Hope this helps.

Best regards, mabri

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Re: [Podofo-users] build error

[Joerg Sonnenberger]

On Tue, May 15, 2018 at 12:02:30PM +0200, M. Froese wrote:
> cmake -G "Visual Studio 15 2017" .\src 
> -DCMAKE_INCLUDE_PATH="%FTDIR%\include;%JPEGDIR%\include;%JPEGDIR%;%ZLIBDIR%\include"

This tells cmake to configure the src directory, not the current
directory.

Joerg

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[Podofo-users] build error

[M. Froese]

hi everyone,

i have downloaded the latest podofo-0.9.6-rc1 and want to build it on a 
win10 machine using  the visual studio 2017 command prompt. i have cmake 
3.11.1 and all the nescessary libs installed/built. i created a 
build.cmd as described in the readme file, first in an empty 
subdirectory, then after the same error in the podofo root dir:


del cmakecache.txt
set FTDIR=C:\ecworks_mep\freetype-2.8.1
set FTLIBDIR=C:\ecworks_mep\freetype-2.8.1\objs
set JPEGDIR=C:\ecworks_mep\jpeg-9b
set ZLIBDIR=C:\ecworks_mep\zlib-1.2.11
cmake -G "Visual Studio 15 2017" .\src 
-DCMAKE_INCLUDE_PATH="%FTDIR%\include;%JPEGDIR%\include;%JPEGDIR%;%ZLIBDIR%\include"


the command output shows:

C:\ecworks_mep\podofo-0.9.6-rc1>build.cmd

C:\ecworks_mep\podofo-0.9.6-rc1>del cmakecache.txt

C:\ecworks_mep\podofo-0.9.6-rc1>set FTDIR=C:\ecworks_mep\freetype-2.8.1

C:\ecworks_mep\podofo-0.9.6-rc1>set 
FTLIBDIR=C:\ecworks_mep\freetype-2.8.1\objs


C:\ecworks_mep\podofo-0.9.6-rc1>set JPEGDIR=C:\ecworks_mep\jpeg-9b

C:\ecworks_mep\podofo-0.9.6-rc1>set ZLIBDIR=C:\ecworks_mep\zlib-1.2.11

C:\ecworks_mep\podofo-0.9.6-rc1>cmake -G "Visual Studio 15 2017" .\src 
-DCMAKE_INCLUDE_PATH="C:\ecworks_mep\freetype-2.8.1\include;C:\ecworks_mep\jpeg-9b\include;C:\ecworks_mep\jpeg-9b;C:\ecworks_mep\zlib-1.2.11\include"

-- The C compiler identification is MSVC 19.14.26428.1
-- The CXX compiler identification is MSVC 19.14.26428.1
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual 
Studio/2017/Enterprise/VC/Tools/MSVC/14.14.26428/bin/Hostx86/x86/cl.exe
-- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual 
Studio/2017/Enterprise/VC/Tools/MSVC/14.14.26428/bin/Hostx86/x86/cl.exe 
-- works

-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft 
Visual 
Studio/2017/Enterprise/VC/Tools/MSVC/14.14.26428/bin/Hostx86/x86/cl.exe
-- Check for working CXX compiler: C:/Program Files (x86)/Microsoft 
Visual 
Studio/2017/Enterprise/VC/Tools/MSVC/14.14.26428/bin/Hostx86/x86/cl.exe 
-- works

-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
CMake Error at CMakeLists.txt:4 (MESSAGE):
  Run cmake on the CMakeLists.txt in the project root, not the one in the
  'src' directory.  You will need to delete CMakeCache.txt from the current
  directory.


-- Configuring incomplete, errors occurred!
See also "C:/ecworks_mep/podofo-0.9.6-rc1/CMakeFiles/CMakeOutput.log".

this output log does not show any errors, all the entries end with "0 
warnings, 0 errors". i do run cmake in the project root, so what is wrong?


thank you!


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