howtouse.txt

guide and some example with visualC++

#include <conio.h>
#include <stdio.h>
#include "cvcam.h"
#include "..\\highgui\\highgui.h"
#include "cv.h"

void __cdecl callback(void* _image)
{
	IplImage* image = (IplImage*)_image;
	cvLine(image, cvPoint(0, 0), cvPoint(image->width, image->height), CV_RGB(255, 0, 0), 1);
}

int main()
{
	int cameras = cvcamGetCamerasCount();
	if(cameras == -1)
	{
		printf("\nNo cameras available on the system. Exiting...");
		return -1;
	}

	cvcamSetProperty(0, CVCAM_PROP_CALLBACK, &callback);
	cvcamInit();
	cvcamStart();
	wait_key(0);
	cvcamStop();
	cvcamExit();

	return 0;
}