MATLAB "C" DLL Errors

Question

I'm compiling some MATLAB functions into a C DLL. The exported mlf functions return a boolean value representing whether the function succeeded or not. When the return value is false, I want to find out the error information. I couldn't find a way to do that! (other than compiling and exporting the lasterror() function).

Is there a C interface to get the last error generated by MATLAB's runtime?

Answer 1

Okay, let's try

mexCallMATLABWithTrap (C and Fortran) - Call MATLAB function, user-defined M-file, or MEX-file and capture error information

#include "mex.h"

mxArray *mexCallMATLABWithTrap(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[], const char *functionName);

and

mexEvalStringWithTrap (C and Fortran) - Execute MATLAB command in caller's workspace and capture error information

#include "mex.h"

mxArray *mexEvalStringWithTrap(const char *command);

Those two things were found with Google and a guess or two. Sorry if it's a waste of time.

http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/access/helpdesk/help/techdoc/apiref/mexcallmatlabwithtrap.html&http://www.mathworks.com/access/helpdesk/help/techdoc/apiref/bqoqnz0.html

http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/access/helpdesk/help/techdoc/apiref/mexevalstringwithtrap.html&http://www.mathworks.com/access/helpdesk/help/techdoc/apiref/bqoqnz0.html

Answer 2

What you're asking is way out of my depth. Best I can do is point you at a community which may be able to help. Try first the folk over at GNUMex. After that, perhaps CodeProject and MATLAB themselves.