20130515_Lab_MouseDetect

#include <stdio.h>
#include <stdlib.h>

#include "cv.h"
#include "highgui.h"

IplImage* img, *img2;


void on_mouse( int event, int x, int y, int flags, void* param )
{
     printf("event = %08X x=%4d y=%4d flags =%08X\n",
                   event, x,    y,    flags);
     if (flags!=0)
       cvCircle(
               img,//CvArr* img,
               cvPoint(x, y),  // CvPoint center,
               rand()%30, //int radius,
               cvScalar(rand()%255, rand()%255, rand()%255, 0),  //CvScalar color,
               1, 8 , 0 //   int thickness=1, int line_type=8, int shift=0 );
              );
     cvShowImage("Fig", img);

}

int main(int argc, char *argv[])
{



  img2 = cvCreateImage(
                       cvSize(1280, 1024), //CvSize size,
                       IPL_DEPTH_8U , //int depth,
                       3  //int channels
  );

  img = cvLoadImage("Peppers.BMP", -1);
  if (img==0)
  {
      printf("Error in opening file\n");
      system("PAUSE");
      return -1;
  }
  printf("Channels %d depth %d \n", img->nChannels, img->depth);
  printf("The image Width by Height is %dX%d \n", img->width,img->height);
  printf("The image WidthStep %d \n", img->widthStep);

  cvNamedWindow("Fig", CV_WINDOW_AUTOSIZE  );


  cvSetMouseCallback("Fig", on_mouse, 0 );

  cvShowImage("Fig", img );

  cvWaitKey(0);

  cvDestroyWindow( "Fig" );
  cvDestroyWindow( "Fig2" );

  cvReleaseImage( &img );
  cvReleaseImage( &img2 );

  system("PAUSE");
  return 0;
}