C++ Interface workarounds for limitations

How can I work around some of the limitations for the C++ Interface?

Answer 1

[MathWorks Support Team]

Below is a list of some of the C++ Interface limitations. In some cases a workaround is provided.

Creating objects of classes in the std namespace 

• Workaround:  example with std::stack
• std::wstring and other std::string variants
  • Support starting in: R2020b
• std::complex  
  • Support starting in: R2022a
• std::vector as a class data member
  • Support starting in: R2022a

Class templates with incomplete or no instantiations

• Workaround:  example with Pair template

Arrays and vectors of class objects

• Support starting in: R2020a

void*

• Support starting in: R2021a

Function pointer

• Support starting in: R2021a

Preprocessor directives

• Workaround: preprocessor directives

Array of std::string

• Workaround: string arrays
• void foo(std::string[] s)
• std::vector<std::string>
  • Support starting in: R2021a

Data member

• Array/Pointer data members
  • Support starting in: R2020a
• Reference data members

More detail is supplied in the Workaround links, but these general steps apply:

To run the workaround examples on Windows®:

• Download or copy the C++ header file statements into .hpp files.
• Download or copy the source code into .cpp files and build, using instructions in How to build a  shared library file for the C++ Interface on Windows .
• Execute the MATLAB code to build the interface.
• If required, edit the library definition file.
• Execute the MATLAB code to test the functionality.