Is it possible to use C/C++ wrapper functions to call SIMULINK models in an external environment such as Visual Studio or eclipse C++ software project?
The reason is that any modification to the original model doesn't need to be visitble outside. The updated model can still be accessible via wrapper function.
Could someone help me?
It is possible to generate a standalone C/C++ shared library from your Simulink model if you have an Embedded Coder license, which you can then invoke from any C/C++ application.
However, it looks like what you want is to continue to run the model within the MATLAB environment, correct? If so, you can write MATLAB code to run the model using the Simulink command-line API, or more specifically, the sim command if you want to execute the model without any additional operations. You can then call the MATLAB code from a C/C++ application running on the same machine by using the MATLAB Engine interface.