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Problem with Matlab API Data in c++ project (QtCreator)

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Cristian Ramírez
Cristian Ramírez 2022-2-16
编辑： Divyanshu 2024-1-31
Hi,
I am having trouble trying to configure a project in qt creator (version 4.15.1 and 6.2.1 qt framework with MSVC 2019 64 bit compiler) using the matlab api C++. I have compiled a shared library using the Library compiler SDK from Matlab (R2021b). I also have previously succesfully configure the project to use the old version (Matlab API C), using mxarrays and mcl and mlx functions. The project works fine at this point.
I want to upgrade the code to use the modern version of the API for c++, because of some of its features (for example, using asynchronous calls to the library function).
I have added the following lines to my project file (qmake):
# MATLAB API
MATLAB_FOLDER = $$(MATLAB_RUNTIME_FOLDER)
LIBS += -L$$MATLAB_FOLDER/extern/lib/win64/microsoft -llibMatlabCppSharedLib -llibMatlabDataArray
INCLUDEPATH += $$MATLAB_FOLDER/extern/include
DEPENDPATH += $$MATLAB_FOLDER/extern/include
MATLAB_RUNTIME_FOLDER is a system variable where i indicate the path to the matlab runtime folder (version 9.11). I also copied the dlls into my project where the .exe is created. From /v911/runtime/win64 i took libMatlabCppSharedLib9_11.dll and from /v911/extern/bin/win64 libMatlabDataArray.dll.
The initialization of the aplication and the library seems to work fine:
namespace mc = matlab::cpplib;
namespace md = matlab::data;
std::vector<std::u16string> options = { u"-nojvm" };
auto matlab_application = mc::initMATLABApplication(mc::MATLABApplicationMode::IN_PROCESS, options);
auto lib = mc::initMATLABLibrary(matlab_application, u"test.ctf");
The problem lies when I try to declare a factory variable:
md::ArrayFactory factory;
My application launches an exception and i do not know why. Maybe I lack another dependancy ?

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回答（1 个）

Divyanshu
Divyanshu 2024-1-31
编辑：Divyanshu 2024-1-31
Hi Cristian,
Please go through the following pointers:
  • Ensure that the file 'C:\Program Files\MATLAB\MATLAB Runtime\v911\runtime\win64' is added to the path.
  • Launch MATLAB in your system.
  • Now build the application with the following command:
>>mbuild main.cpp
  • Execute the application using the command:
!main.exe
Regards,
Divyanshu

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