//Begin code
void cCam::camCallback(IplImage* image)
{
m_Image = (IplImage*)image;

return;
}
//End code

/************************************************** 
Cam.h
by Sylvia (03 Mar 2004)

Modified 
************************************************** /

#pragma once

#include <cv.h> // include core library interface
#include <highgui.h> // include GUI library interface
#include "cvcam.h"

class cCam
{
private:
HWND m_hWnd;

int m_ResW;
int m_ResH;

IplImage *m_Image;

static void camCallback(IplImage* image);

public:
cCam(void);
~cCam(void);

BOOL Init(HWND hwnd, int width=320, int height=240);
BOOL Shutdown();
};



/************************************************** 
Cam.cpp
by Sylvia (03 Mar 2004)

Modified 
************************************************** /
#include "cam.h"

cCam::cCam(void)
{
}

cCam::~cCam(void)
{
Shutdown();
}

BOOL cCam::Init(HWND hwnd, int width, int height)
{
cvcamStop();
cvcamExit();

//NO CAMERAS FOUND !
if (cvcamGetCamerasCount() == 0 )
{
::MessageBox(NULL, "No Cameras found!", "Error Message", MB_ICONWARNING|MB_OK);
return FALSE;
}

if((m_hWnd = hwnd) == NULL)
return FALSE;

int webcamNo =0;
m_ResW = width;
m_ResH = height;

cvcamSetProperty(0, CVCAM_RNDWIDTH, &m_ResW); //Set resolution
cvcamSetProperty(0, CVCAM_RNDHEIGHT, &m_ResH);

cvcamSetProperty(0, CVCAM_PROP_ENABLE, &webcamNo); //Selects the 1-st found camera 
cvcamSetProperty(0, CVCAM_PROP_RENDER, &webcamNo); //We will render stream from this source

cvcamSetProperty(0, CVCAM_PROP_WINDOW, &m_hWnd); // Selects a window for video rendering

cvcamSetProperty(0, CVCAM_PROP_CALLBACK, camCallback); //this callback will process every frame 
//the programe still work without this statement
//if comment this statement, the frame will become color
cvcamInit();
cvcamStart();

return TRUE;
}

BOOL cCam::Shutdown()
{
cvcamStop();
cvcamExit();

return TRUE;
}

void cCam::camCallback(IplImage* image)
{
m_Image = (IplImage*)image;

return;
}

int main()
{
  cCam myObject;
  IplImage myImage

  // This would work, assuming the image pointer was a public member. Since
  // it isn't, you will only be able to access it in this manner using member
  // functions.
  
  cCam->image = myImage; // Notice the little -> is used instead of a dot.

  return 0;
}