How to convert from c++ interface cv::Mat to c IplImage?

Question

How to convert from c++ interface cv::Mat to c IplImage ? such that i used
IplImage * lpl= matimage;

and matimage contain data and after some operation i want to do inverse convert. from IplImage* lpl ===> cv::Mat can i use a copy data and how ?

Answer 1

cv::Mat img = ....;
IplImage iplImg = img;

Then

cv::Mat img2(iplImg);

Answer 2

#include "iostream"
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

using namespace std;
using namespace cv;

int main()
{
    Mat image = imread("C:\\lena.jpg");
    IplImage image2 = image;
    cvShowImage("TESTiplimage",&image2);
    imshow("TESTmat",image);
    waitKey(0);

    return 0;
}

...try this code it...it works for me...you should get 2 windows showing the same image..