mwArray& varargin initialize

function plotSignals(varargin)....end

I use mcc to convert it to C++ syntax. varargin is a variable parameter,it can receive dynamic parameters,but in MFC type of varargin is mwArray, how can I initialize this variable? I need to convert three strings to varargin.

I have tried this:

const char* str2[]={"EngSpeed","CurrentGear","filename"};

mwArray my_struct(3,1,3,str2);

but it doesnot make a difference....

Thank you for your help!

Answer 1

[Kaustubha Govind]

You need to create a cell array as follows:

mwArray input(1, 3, mxCELL_CLASS);
mwArray arg1("EngSpeed");
mwArray arg2("CurrentGear");
mwArray arg3("filename");

input.Get(1,1).Set(arg1);
input.Get(1,2).Set(arg2);
input.Get(1,3).Set(arg3);

Also, this Technical Solution explains the answer with an example.

[mat]

Thank you for your kind help, it works!

I find the description of varargin and varargout in Matlab compiler guide:

"If your MATLAB function interface uses varargin or varargout, you must

pass them as cell arrays. For example, if you have N varargins, you need

to create one cell array of size 1-by-N. Similarly, varargouts are returned

back as one cell array. The length of the varargout is equal to the number

of return values specified in the function call minus the number of actual

variables passed. As in the MATLAB software, the cell array representing

varagout has to be the last return variable (the variable preceding the first

input variable) and the cell array representing varargins has to be the last

formal parameter to the function call."

Answer 2

[Jan]

varargin is a function, therefore I cannot imagine, why or how ou could initialize it. varargin replies a cell and perhaps you want to create a {1 x 3} cell vector and insert the three strings.

[mat]

the definition of this fuction is:

extern LIB_plotSignals_CPP_API void MW_CALL_CONV plotSignals(const mwArray& varargin);

I need to input dynamic parameters through varargin.Now I have to input three strings, but I don't know how to do it correctly