testing MATLAB dll using mbuild

Hi,

I want to verify dll generated in MATLAB. Hence I had referred this link below http://blogs.mathworks.com/loren/2011/04/21/deploying-multiple-c-shared-libraries/

my function signarure in matlab is function abc(TName, Flag, varargin)

to run this function from MATLAB command prompt i give his command as below

abc('parm1', 'param2', 'param3', 'path to file 1', 'path to file 2')

I want to know how can I declare the mwArray in .cpp file. I had tried

mwArray  param1;
mwArray param2;
mwArray input(1, 3, mxCELL_CLASS);
mwArray arg1('param3');  
mwArray arg2('path to fiel 1');
mwArray arg3(path to field 2');

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

with this I get errors when I execute mbuild command. any help ?

is it possible to single step(debug)

Thanks in advance

[Kaustubha Govind]

Please paste the exact errors you receive from mbuild.

Answer 1

[Kaustubha Govind]

This page seems to suggest that MATLAB Compiler "creates several overloaded methods that implement the MATLAB functions. Each of these overloaded methods corresponds to a call to the generic MATLAB function with a specific number of input arguments". So you could try passing them in as 5 arguments:

mxArray *in1 = mxCreateString("param1");
mxArray *in2 = mxCreateString("param2");
mxArray *in3 = mxCreateString("param3");
mxArray *in4 = mxCreateString("path to file 1");
mxArray *in5 = mxCreateString("path to file 2");

Also, you need mxArray, not mwArray.

[Mohammed Samdani]

Hi Kaustubha,

I got the below error message after implementing your solution

error c2660: 'abc': function does not take 7 arguments

error c2660: 'xyz': function does not take 1 arguments

abc and xyz are 2 functions in matlab which are converted to dll(library).

function abc() calls function xzy()

Signature for function abc() is

function abc(tName, Flag, varargin)

signature of function xyz() is

function [success, errorMsg, varargout] = xyz(functionName, bFlag, varargin)

I am following steps as give in below link.

http://blogs.mathworks.com/loren/2011/04/21/deploying-multiple-c-shared-libraries/

// Must declare all MATLAB data types after initializing the

// application and the library, or their constructors will fail.

mxArray *in1 = mxCreateString("Param1");

mxArray *in2 = mxCreateString("Param2");

mxArray *in3 = mxCreateString("Parma3");

mxArray *in4 = mxCreateString("Path to file1");

mxArray *in5 = mxCreateString("path to file 2");

mwArray test_Dll; //is .cpp file test_Dll.cpp

// Initialization succeeded

Testing_auCal_appCmdLine(1, test_Dll *in1, *in2, *in3, *in4, *in5);

// had also tried

//Testing_auCal_appCmdLine(*in1, *in2, *in3, *in4, *in5);

// call the library xyz

xyz(abc);

// Wait for the user to close the figure

mclWaitForFiguresToDie(NULL);

Requesting your suggestions. Wanted to know if my approach is correct. Where can I find mor information. on mxArray etc.

Thanks

Answer 2

[Mohammed Samdani]

http://blogs.mathworks.com/loren/2011/04/21/deploying-multiple-c-shared-libraries/ I used the example in above link and modified to accept varargin and used solution provided in below link http://www.mathworks.com/matlabcentral/answers/22031-mwarray-varargin-initialize and

http://www.mathworks.com/support/solutions/en/data/1-2RAZJA/index.html

mwArray input(1, 2, mxCELL_CLASS); input.Get(1,1).Set(atof(av[1])); input.Get(1,2).Set(atof(av[2])); input.Get(1,1).Set(width); input.Get(1,2).Set(limit); mwArray fractal1; // Initialization succeeded. Generate the image.

mandelbrot(1, fractal1, input);

it worked for me.

[Kaustubha Govind]

Great! Good to know you were able to resolve the issue.