#include "cv.h"
#include "highgui.h"
#include <stdio.h>

int main ()
{
// new IplImage structure 'img', using 32-bit floating point representation
// over 3 channels. This constructs a colour image with blue, green and red
// channels (in that order) with each colour value being a 32-bit float.
  IplImage *img = cvCreateImage(cvSize(100, 100), IPL_DEPTH_32F, 3);

// add 'orange' data to the colour channels.
  int i;
  for (i = 0; i < img->width*img->height*3; i+=3) // over w*h*3 (channels)
  {
    ((float*)img->imageData)[i] = 0.25f;    // blue channel  =  64/256
    ((float*)img->imageData)[i+1] = 0.75f;  // green channel = 192/256
    ((float*)img->imageData)[i+2] = 1.f;    // red channel   = 256/256
  }

// a visualization window is created with title 'image'
  cvNamedWindow ("image", 1);

// img is shown in 'image' window
  cvShowImage ("image", img);

// wait for infinite delay for a keypress
  cvWaitKey (0);

// memory release for img before exiting the application
  cvReleaseImage (&img);

// Self-explanatory
  cvDestroyWindow("image");

  return (0);
}