Matlab function handle as a argument called by C?

The MATLAB function x = fmincon(fun,x0,A,b) has a function handle @fun, when it compiles into a DLL, the function form is mlx- or mlf- as follow:

 mlxFmincon(int nlhs, mxArray *plhs[], int nrhs, mxArray *prhs[]);

 mlfFmincon(int nargout, mxArray** X, mxArray** FVAL, mxArray** EXITFLAG, mxArray** OUTPUT, mxArray** LAMBDA, mxArray** GRAD, mxArray** HESSIAN, mxArray* FUN, mxArray* X_in1, mxArray* A, mxArray* B, mxArray* Aeq, mxArray* Beq, mxArray* LB, mxArray* UB, mxArray* NONLCON, mxArray* options, mxArray* varargin);

The problem is how can I call this function in the visual studio? Is it a way to use the function handle as a argument just like the function pointer in C? thanks.

Answer 1

[Walter Roberson]

You cannot directly call MATLAB functions, as function handles do not point to machine code. You need to ask the MATLAB Engine to evaluate the expression.

[iar]

What about C++ or the COM? Can it solve the problem in those methods?

[Walter Roberson]

Only MATLAB can invoke MATLAB function handles. Function handles in MATLAB are a data structure that include (amongst other things) a reference to a data block that stores MATLAB code in a pre-parsed threaded-interpreter format that needs to be interpreted by the MATLAB Engine. MATLAB .m code does not compile down to machine language, only to linked data structures.

[lin he]

is there a way to pass c++ functions to fmincon?

[Walter Roberson]

No.

You might, however, be able to pass the function handle of a mex function or of something you have loadlibrary()'d