在我的c++解决方案中我有一个DLL。我的DLL使用Octave c++类，也使用Octave作为"嵌入式"引擎。通过使用以下步骤(第一种方法)，我可以构建我的c++解决方案，并运行构建的可执行文件，并在一些文本文件中获得输出结果，没有任何问题:
The steps of using Octave Libraries in Visual Studio C++ 2008:
1- Download Octave 3.6.1 for Visual Studio 2008 by the following link.
Notice that there two options for download, one for VS2010 and one for VS2008, you should download the VS2008 option.
http://sourceforge.net/projects/octave/files/Octave%20Windows%20binaries/Octave%203.6.1%20for%20Windows%20Microsoft%20Visual%20Studio/
2- Install the Octave 3.6.1 on your system in the following directory (which contains NO white spaces):
C:SoftwareOctave-3.6.1
3- While installing, on the installation wizard, select all the available packages of the Octave 3.6.1 to be installed, also select "gnuplot.exe" as graphics engine.
4- After installing Octave 3.6.1, include the Octave 3.6.1 header files in your C++ code like below:
#include <octave/oct.h>
#include <octave/octave.h>
#include <octave/config.h>
5- Configure your VS2008:
Add the following directories to "Property Pages > Configuration Properties > C/C++ > General >Additional Include Directories:"
C:SoftwareOctave-3.6.1include
C:SoftwareOctave-3.6.1includeoctave-3.6.1
6- Configure your VS2008:
Add the following directories to "Property Pages > Configuration Properties > Linker > General > Additional Library Directories:"
C:SoftwareOctave-3.6.1lib
C:SoftwareOctave-3.6.1liboctave3.6.1
7- Configure your VS2008:
Change the "Property pages > Configuration Properties > Linker > General > Enable Incremental Linking" to "No."
8- Configure your VS2008:
Add the following files to "Property Pages > Configuration Properties > Linker > Input > Additional Dependencies:"
octave.lib
octinterp.lib
cruft.lib
9- Configure your VS2008:
Enter the following path to "Property Pages > Configuration Properties > Debugging >
Environment:"
PATH=%PATH%;C:SoftwareOctave-3.6.1bin;
10- Use the following command before loading my DLL:
SetDllDirectory((LPCWSTR)L"C:\Software\Octave-3.6.1\bin\");
但是当我尝试使用以下步骤(第二种方法)时，我有一个问题(我将解释这个问题):
The steps of using Octave Libraries in Visual Studio C++ 2008:
1- Download Octave 3.6.1 for Visual Studio 2008 by the following link.
Notice that there two options for download, one for VS2010 and one for VS2008, you should download the VS2008 option.
http://sourceforge.net/projects/octave/files/Octave%20Windows%20binaries/Octave%203.6.1%20for%20Windows%20Microsoft%20Visual%20Studio/
2- Install the Octave 3.6.1 on your system in the following directory (which contains NO white spaces):
C:SoftwareOctave-3.6.1
3- While installing, on the installation wizard, select all the available packages of the Octave 3.6.1 to be installed, also select "gnuplot.exe" as graphics engine.
4- After installing Octave 3.6.1, copy the folder "Octave-3.6.1" at the address "C:SoftwareOctave-3.6.1" next to the solution file of visual studio 2008 project (*.sln) and then include the Octave 3.6.1 header files in your C++ code like below:
#include <octave/oct.h>
#include <octave/octave.h>
#include <octave/config.h>
5- Configure your VS2008:
Add the following directories to "Property Pages > Configuration Properties > C/C++ > General >Additional Include Directories:"
..Octave-3.6.1include
..Octave-3.6.1includeoctave-3.6.1
6- Configure your VS2008:
Add the following directories to "Property Pages > Configuration Properties > Linker > General > Additional Library Directories:"
..Octave-3.6.1lib
..Octave-3.6.1liboctave3.6.1
7- Configure your VS2008:
Change the "Property pages > Configuration Properties > Linker > General > Enable Incremental Linking" to "No."
8- Configure your VS2008:
Add the following files to "Property Pages > Configuration Properties > Linker > Input > Additional Dependencies:"
octave.lib
octinterp.lib
cruft.lib
9- Configure your VS2008:
Enter the following path to "Property Pages > Configuration Properties > Debugging > Environment:"
PATH=%PATH%;..Octave-3.6.1bin;
10- Use the following command before loading my DLL:
SetDllDirectory((LPCWSTR)L"..\Octave-3.6.1\bin\");
问题是，当我使用第二种方法时，只要我保持C:SoftwareOctave-3.6.1的安装文件夹不变，它就可以完美地工作。我的意思是，当我重命名安装文件夹或当我删除它，或当我卸载Octave，我的解决方案编译和构建可执行文件，但当运行可执行文件时，它不会产生任何结果(结果是一堆文本文件和输出文件将是空的)。我想知道有没有人知道原因和解决办法。谢谢。
@Andy按照Andy的要求，我在下面展示了使用Octave作为嵌入式引擎的c++代码部分。前缀为m_的变量是FDD类的成员，getCPSD方法在下面实现。
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 as embedded engine, because cpsd command is an "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 is 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 from 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 the embedded Octave engine, but instead, it closes the whole program! Therefore, I skipped this line!
}