MATLAB Application Program Interface Reference

Get pointer to data

#include "matrix.h"
void *mxGetData(const mxArray *array_ptr);

array_ptr

Pointer to an mxArray.

Similar to mxGetPr, except mxGetData returns a void *. Use mxGetData on numeric arrays with contents other than double.

type = mxGetClass(prhs[0]);
switch type
    case mxUNIT8_CLASS:
        data = (unsigned char *)mxGetData(prhs[0]);
        .
        .
        .