Using Octave Libraries (DLLs and so on) in C++ without installing Octave (just copying the installation folder) -


in c++ solution have dll. dll uses octave c++ classes , uses octave "embedded" engine. using following steps (1st method) can build c++ solution , run built executable , output results in text files without problem: 

the steps of using octave libraries in visual studio c++ 2008:  1- download octave 3.6.1 visual studio 2008 following link.  notice there 2 options download, 1 vs2010 , 1 vs2008, should download vs2008 option.  http://sourceforge.net/projects/octave/files/octave%20windows%20binaries/octave%203.6.1%20for%20windows%20microsoft%20visual%20studio/  2- install octave 3.6.1 on system in following directory (which contains no white spaces):  c:\software\octave-3.6.1  3- while installing, on installation wizard, select available packages of octave 3.6.1 installed, select "gnuplot.exe" graphics engine.  4- after installing octave 3.6.1, include octave 3.6.1 header files in c++ code below:   #include <octave/oct.h> #include <octave/octave.h> #include <octave/config.h>  5- configure vs2008: add following directories "property pages > configuration properties > c/c++ > general >additional include directories:"  c:\software\octave-3.6.1\include c:\software\octave-3.6.1\include\octave-3.6.1  6- configure vs2008: add following directories "property pages > configuration properties > linker > general > additional library directories:"  c:\software\octave-3.6.1\lib c:\software\octave-3.6.1\lib\octave\3.6.1  7- configure vs2008: change "property pages > configuration properties > linker > general > enable incremental linking" "no."  8- configure vs2008: add following files "property pages > configuration properties > linker > input > additional dependencies:"  octave.lib octinterp.lib cruft.lib  9- configure vs2008: enter following path "property pages > configuration properties > debugging >   environment:"      path=%path%;c:\software\octave-3.6.1\bin;  10- use following command before loading dll:   setdlldirectory((lpcwstr)l"c:\\software\\octave-3.6.1\\bin\\");

but when try use following steps (2nd method), have problem (i'll explain problem): 

the steps of using octave libraries in visual studio c++ 2008:  1- download octave 3.6.1 visual studio 2008 following link.  notice there 2 options download, 1 vs2010 , 1 vs2008, should download vs2008 option.  http://sourceforge.net/projects/octave/files/octave%20windows%20binaries/octave%203.6.1%20for%20windows%20microsoft%20visual%20studio/  2- install octave 3.6.1 on system in following directory (which contains no white spaces):  c:\software\octave-3.6.1  3- while installing, on installation wizard, select available packages of octave 3.6.1 installed, select "gnuplot.exe" graphics engine.  4- after installing octave 3.6.1, copy folder "octave-3.6.1" @ address "c:\software\octave-3.6.1" next solution file of visual studio 2008 project (*.sln) , include octave 3.6.1 header files in c++ code below:   #include <octave/oct.h> #include <octave/octave.h> #include <octave/config.h>  5- configure vs2008: add following directories "property pages > configuration properties > c/c++ > general >additional include directories:"  ..\octave-3.6.1\include ..\octave-3.6.1\include\octave-3.6.1  6- configure vs2008: add following directories "property pages > configuration properties > linker > general > additional library directories:"  ..\octave-3.6.1\lib ..\octave-3.6.1\lib\octave\3.6.1  7- configure vs2008: change "property pages > configuration properties > linker > general > enable incremental linking" "no."  8- configure vs2008: add following files "property pages > configuration properties > linker > input > additional dependencies:"  octave.lib octinterp.lib cruft.lib  9- configure vs2008: enter following path "property pages > configuration properties > debugging > environment:"  path=%path%;..\octave-3.6.1\bin;  10- use following command before loading dll:     setdlldirectory((lpcwstr)l"..\\octave-3.6.1\\bin\\");

the problem when use 2nd method, works perfect far keep installation folder of c:\software\octave-3.6.1 untouched. mean when rename installation folder or when remove it, or when uninstall octave, solution compiles , builds executable, when running executable, not generate results (the results bunch of text files , output files empty). wondering if knows reason , solution. thanks.

@andy andy requested, showed below section of c++ code uses octave embedded engine. variables m_ prefix members of fdd class getcpsd method implemented below.

void fdd::getcpsd(){     int argc=int(2);     string_vector argv=string_vector(argc);     argv(0)="embedded";     argv(1)="-q";     octave_main(argc,argv.c_str_vec(),1);//start octave interpreter embedded engine, because cpsd command "m file" not c++ class      octave_value_list ovl_in_pkg;     ovl_in_pkg(0)="load";     ovl_in_pkg(1)="signal";     feval("pkg",ovl_in_pkg,0);//load signal package of octave (cpsd command inside signal package)      octave_value_list ovl_in_hanning;     octave_value_list ovl_out_hanning;     ovl_in_hanning(0)=m_int_samplingfreq * nfft_fs_ratio;//nfft     ovl_out_hanning=feval("hanning",ovl_in_hanning,1);     octave_value_list ovl_in_cpsd;     octave_value_list ovl_out_cpsd;     ovl_in_cpsd(2)=ovl_out_hanning(0);//window (get hanning)     ovl_in_cpsd(3)=cpsd_overlap;//overlap     ovl_in_cpsd(4)=m_int_samplingfreq * nfft_fs_ratio;//nfft     ovl_in_cpsd(5)=m_int_samplingfreq;//fs     for(int i=int(0);i<m_int_numchann;i++){         ovl_in_cpsd(0)=m_matrixofchannels.column(i);         for(int j=int(0);j<m_int_numchann;j++){             ovl_in_cpsd(1)=m_matrixofchannels.column(j);             ovl_out_cpsd=feval("cpsd",ovl_in_cpsd,2);             m_ovl_amplitudesandphasefromcpsd(i*m_int_numchann+j)    =ovl_out_cpsd(0).complex_column_vector_value();             m_ovl_freqfromcpsd(i*m_int_numchann+j)                  =ovl_out_cpsd(1).column_vector_value();         }     }     m_columnvector_f = m_ovl_freqfromcpsd(0).column_vector_value();     m_int_numoffreqindexpoints = m_ovl_freqfromcpsd(0).column_vector_value().length();     //clean_up_and_exit(0);//for closing embedded octave engine, instead, closes whole program! therefore, skipped line! }

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