/*!

 *      @file  recreating_windows.cpp

 *     @brief  https://code.ros.org/trac/opencv/ticket/1538

 *

 * Description:

 * I'm writing a C++ program, with CodeBlocks?, wxWidgets and OpenCV 2.3.1.

 * It's running in Windows 7. When I compile in Debug mode, I can create

 * windows with namedWindow function, destroy it with destroyWindow and

 * re-create again. I think that is the way it should work.

 * But, when I compile in Release mode the windows don't show after

 * re-creating. The program acts as if the window is there, but nothing

 * appear in the screen.

 *

 * I don't know if this is a bug, or if I shouldn't destroy windows like that.

 * Sorry if my english is poor, and best regards.

 *

 *    @author  Luis Diaz Mas (LDM), [email protected]

 *

 *  @internal

 *    Created  09/01/12

 *   Revision  01/09/12 - 19:15:37

 *   Compiler  gcc/g++

 *

 * This source code is released for free distribution under the terms of the

 * GNU General Public License as published by the Free Software Foundation.

 */

#include <cstdlib>

#include <opencv2/core/core.hpp>

#include <opencv2/highgui/highgui.hpp>

using namespace cv;

int main ()

{

  Mat img(Size(640,480), CV_8UC1, Scalar(0));

  bool endApp=false;

  char key=0;

  while(endApp==false)

  {

    namedWindow("img");

    imshow("img", img);

    key = waitKey();

    if (key==27)

      endApp=true;

    destroyWindow("img");

  }

  return EXIT_SUCCESS;

}                                // ----------  end of function main  ----------