Bonjour,

en cherchant a utiliser MATLAB dans un programme C++, je me suis tourné vers MATLAB Engine. Sur la doc, j'ai trouvé un document dont le code est :

j'ai par ailleurs bien suivi les indications données à cette page là

Code c : Sélectionner tout - Visualiser dans une fenêtre à part
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/* $Revision: 1.8.4.4 $ */
/*
 *	engdemo.c
 *
 *	A simple program to illustrate how to call MATLAB
 *	Engine functions from a C program.
 *
 * Copyright 1984-2011 The MathWorks, Inc.
 * All rights reserved
 */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "engine.h"
#define  BUFSIZE 256
 
int main()
 
{
	Engine *ep;
	mxArray *T = NULL, *result = NULL;
	char buffer[BUFSIZE+1];
	double time[10] = { 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 };
 
	/*
	 * Call engOpen with a NULL string. This starts a MATLAB process 
     * on the current host using the command "matlab".
	 */
	if (!(ep = engOpen(""))) {
		fprintf(stderr, "\nCan't start MATLAB engine\n");
		return EXIT_FAILURE;
	}
 
	/*
	 * PART I
	 *
	 * For the first half of this demonstration, send data
	 * to MATLAB, analyze the data, and plot the result.
	 */
 
	/* 
	 * Create a variable for the data
	 */
	T = mxCreateDoubleMatrix(1, 10, mxREAL);
	memcpy((void *)mxGetPr(T), (void *)time, sizeof(time));
	/*
	 * Place the variable T into the MATLAB workspace
	 */
	engPutVariable(ep, "T", T);
 
	/*
	 * Evaluate a function of time, distance = (1/2)g.*t.^2
	 * (g is the acceleration due to gravity)
	 */
	engEvalString(ep, "D = .5.*(-9.8).*T.^2;");
 
	/*
	 * Plot the result
	 */
	engEvalString(ep, "plot(T,D);");
	engEvalString(ep, "title('Position vs. Time for a falling object');");
	engEvalString(ep, "xlabel('Time (seconds)');");
	engEvalString(ep, "ylabel('Position (meters)');");
 
	/*
	 * use fgetc() to pause long enough to be
	 * able to see the plot
	 */
	printf("Hit return to continue\n\n");
	fgetc(stdin);
	/*
	 * We're done for Part I! Free memory, close MATLAB figure.
	 */
	printf("Done for Part I.\n");
	mxDestroyArray(T);
	engEvalString(ep, "close;");
 
 
	/*
	 * PART II
	 *
	 * For the second half of this demonstration, we will request
	 * a MATLAB string, which should define a variable X.  MATLAB
	 * will evaluate the string and create the variable.  We
	 * will then recover the variable, and determine its type.
	 */
 
	/*
	 * Use engOutputBuffer to capture MATLAB output, so we can
	 * echo it back.  Ensure first that the buffer is always NULL
	 * terminated.
	 */
 
	buffer[BUFSIZE] = '\0';
	engOutputBuffer(ep, buffer, BUFSIZE);
	while (result == NULL) {
	    char str[BUFSIZE+1];
	    /*
	     * Get a string input from the user
	     */
	    printf("Enter a MATLAB command to evaluate.  This command should\n");
	    printf("create a variable X.  This program will then determine\n");
	    printf("what kind of variable you created.\n");
	    printf("For example: X = 1:5\n");
	    printf(">> ");
 
	    fgets(str, BUFSIZE, stdin);
 
	    /*
	     * Evaluate input with engEvalString
	     */
	    engEvalString(ep, str);
 
	    /*
	     * Echo the output from the command.  
	     */
	    printf("%s", buffer);
 
	    /*
	     * Get result of computation
	     */
	    printf("\nRetrieving X...\n");
	    if ((result = engGetVariable(ep,"X")) == NULL)
	      printf("Oops! You didn't create a variable X.\n\n");
	    else {
		printf("X is class %s\t\n", mxGetClassName(result));
	    }
	}
 
	/*
	 * We're done! Free memory, close MATLAB engine and exit.
	 */
	printf("Done!\n");
	mxDestroyArray(result);
	engClose(ep);
 
	return EXIT_SUCCESS;
}

à la fin de la compilation, mon debuggeur m'indique une myriade d'erreurs de type : 

First-chance exception at 0x000007fefdabcacd in essai_C++.exe:
Microsoft C++ exception: fl::i18n::MwLcDataNotFound at memory location 0x002ce088..
apparemment, ce n'est pas dommageable pour le déroulement du programme :
http://www.mathworks.fr/support/solutions/en/data/1-PKGDN/index.html?product=CO&solution=1-PKGDN, mais pour repérer les erreurs dans mon code, c'est tout de même gênant.

Quelqu'un sait comment empêcher l'affichage de ces erreurs?


Par ailleurs, un projet vide ne contenant que
Code c : Sélectionner tout - Visualiser dans une fenêtre à part
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#include <iostream>
#include "engine.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
 
void main(){
 
	mxArray *Z=NULL;
	Z = mxCreateDoubleMatrix(5, 5, mxREAL);
	mxDestroyArray(Z);
 
	fgetc(stdin);
}
affiche les mêmes exceptions, tout en fonctionnant normalement...
Merci par avance.