I am trying to interface between my c++ application and MATLAB. My IDE is visual studio '17. The initial error that I found was, my application couldn't locate the .dll (libMatlabEngine.dll, libMatlabDataArray.dll) files. So, as per the following link's suggestion ( ) I've moved my .dll files to the executable folder location. This helped but my startMATLAB() is returning a NULL pointer * _*Error Log: 0xC0000005: Access violation executing location 0x0000000000000000.*_ Could you please help me on this like where I'm going wrong? using namespace matlab::engine; using namespace matlab::data; unique_ptr matlabptr = startMATLAB(); ArrayFactory factory; auto inputArray = factory.createArray({ 1, 6 }, cppData.cbegin(), cppData.cend()); auto time_array = factory.createArray({ 1, 6 }, time.cbegin(), time.cend());

Getting null pointer error while interfacing between c++ and MATLAB

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Debasish Mohapatra 2018-6-15

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/405898-getting-null-pointer-error-while-interfacing-between-c-and-matlab

评论： Brian Fox 2020-6-17

I am trying to interface between my c++ application and MATLAB. My IDE is visual studio '17. The initial error that I found was, my application couldn't locate the .dll (libMatlabEngine.dll, libMatlabDataArray.dll) files. So, as per the following link's suggestion ( Stack Overflow ) I've moved my .dll files to the executable folder location. This helped but my startMATLAB() is returning a NULL pointer

Error Log: 0xC0000005: Access violation executing location 0x0000000000000000.

Could you please help me on this like where I'm going wrong?

        using namespace matlab::engine;
        using namespace matlab::data;
        unique_ptr<MATLABEngine> matlabptr = startMATLAB();
  ArrayFactory factory;
  auto inputArray = factory.createArray({ 1, 6 }, cppData.cbegin(), cppData.cend());
  auto time_array = factory.createArray({ 1, 6 }, time.cbegin(), time.cend());