redirectError.cpp

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#include "mexopencv.hpp"
using namespace cv;

//NOTE: MATLAB has some sort of try/catch to handle any C++ exceptions thrown
// in MEX-files, Octave on the other hand can sometimes crash if an exception
// is unhandled!
// So this function helps in that case (plus the pretty-printed errors).

void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
    // Check the number of arguments
    nargchk(nrhs==0 && nlhs==0);

    // Set a cutom error handler to be called by cv::error() and cousins,
    // this replaces the default behavior which prints error info on stderr.
    // Note that OpenCV will still throw a C++ exception after running the
    // handler, but since we terminate with mexErrMsgIdAndTxt it wont matter.
    cv::redirectError(MexErrorHandler);
}