How does Matlab Compiler handle Structures (Converting a Matlab Structure to a C structure)

I have been using Matlab Compiler to create a C shared library and then I will use the DLL as a plug in to another application. I followed the instructions found here: (<http://www.mathworks.com/matlabcentral/answers/94715-how-do-i-wrap-matlab-compiler-4-8-r2008a-created-c-dlls-to-create-another-dll>)

I was able to go through and create my DLL and wrap it to use as a plug in as well as test that newly wrapped function. The problem I have now is trying to return a Structure from my Matlab code into the wrapper function and the application.

I followed the example provided in the link (which I linked the applicable code below) to build a level2.dll. In my function (mlfLevel1) I need to return to variables one is just an integer number which I can convert, the other is a structure and it is what is causing me issues. I am not sure how to approach the Converting Matlab data to C data part of this code when I am trying to convert a Matlab struct to a C structure.

Thank you in advance!

/*-----------------------------------------------------------------------*/

/* Wrapper for level 1 function exported by the MATLAB generated DLL         *
 * This function converts C data to MATLAB data, calls the MATLAB generated  *
 * function in level1.dll and then converts the MATLAB data back into C data */

int wmlfLevel1(double* input2D, int size, char* message, double** output2d){
    int nargout=1;

    /* Pointers to MATLAB data */
    mxArray *msg;
    mxArray *in2d;
    mxArray *out2d=NULL;

    /* Start MCR, load library if not done already */
    int returnval=isMCRrunning();
    if(!returnval)
        return returnval;

    /* Convert C data to MATLAB data */
    /* IMPORTANT: this has to be done after ensuring that the MCR is running */
    msg=mxCreateString(message);
    in2d=mxCreateDoubleMatrix(size, size, mxREAL);
    memcpy(mxGetPr(in2d), input2D, size*size*sizeof(double));

    /* Call the M function */
    returnval=mlfLevel1(nargout, &out2d, in2d, msg);

    /*Convert returned  MATLAB data to C data */
    *output2d=(double *)malloc(sizeof(double)*size*size);
    memcpy(*output2d, mxGetPr(out2d), size*size*sizeof(double));

    /* Clean up MATLAB variables */
    mxDestroyArray(msg);
    mxDestroyArray(in2d);
    mxDestroyArray(out2d);

    return returnval;
}