Recording camera and saving to the specified path using windows form application, C++ ?

See more:

C++/CLI

WinForms

System.Drawing

For C++ version, I wrote the following code according to an open source project to capture camera with pressing on a button:

For executing code bellow, test your written project using opencv 2.4.6 in VS2012 and add header file and libraries to avoid linker errors. then, make up a win form and add bellow code to it and run.

#pragma once
#include "opencv/cv.h"
#include "opencv/highgui.h"
#include "opencv2/opencv.hpp"
#include "opencv2/core/core.hpp"
 
namespace nader 
   {
	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;
 
	IplImage* frame = 0;
	CvCapture* capture = 0;
	int cameraBusy = 0;
	int cameraStatus = 0;
 
	/// <summary>
	/// Summary for Form1
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: Add the constructor code here
			//
                        button1_Click:Click += (gcnew System::EventHandler(this, &Form1::button1_Click));
                        button2_Click:Click += (gcnew System::EventHandler(this, &Form1::button2_Click));
			button3_Click:Click += (gcnew System::EventHandler(this, &Form1::button3_Click));
		}
	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::ComponentModel::BackgroundWorker^  backgroundWorker1;
	protected: 
	private: System::Windows::Forms::PictureBox^  pictureBox1;
	private: System::Windows::Forms::Button^  button1;
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::Button^  button3;
	private: System::Windows::Forms::SaveFileDialog^  saveFileDialog1;

	private:
		/// <summary>
		/// Required designer variable.
		/// </summary>
		System::ComponentModel::Container ^components;

<pre lang="cs">private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e)
     {
             }
private: System::Void backgroundWorker1_DoWork(System::Object^  sender, System::ComponentModel::DoWorkEventArgs^  e)
         {
                BackgroundWorker^ worker = dynamic_cast<BackgroundWorker^>(sender);
                capture = cvCreateCameraCapture(1);
                while(cameraStatus){
                  if (cameraBusy) continue;
                  frame = cvQueryFrame(capture);
                  if(!frame) continue;
                  worker->ReportProgress(1);
                }
                //cvReleaseImage(&frame);
                cvReleaseCapture(&capture);
             }
    private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e)
         {
                 cameraStatus = 1;
                 backgroundWorker1->RunWorkerAsync(10);
             }
    private: System::Void DrawCvImage(IplImage *CvImage,System::Windows::Forms::PictureBox^ pbx)
         {
                // typecast IplImage to Bitmap
                if ((pbx->Image == nullptr) || (pbx->Width != CvImage->width)||(pbx->Height != CvImage->height))
                {
                    pbx->Width = CvImage->width;
                    pbx->Height = CvImage->height;
                    Bitmap^ bmpPicBox = gcnew Bitmap(pbx->Width, pbx->Height);
                    pbx->Image = bmpPicBox;
                }

                Graphics^g = Graphics::FromImage(pbx->Image);

                Bitmap^ bmp = gcnew Bitmap(CvImage->width, CvImage->height, CvImage->widthStep,
                System::Drawing::Imaging::PixelFormat::Format24bppRgb, IntPtr(CvImage->imageData));

                g->DrawImage(bmp, 0, 0, CvImage->width, CvImage->height);
                pbx->Refresh();
                delete g;
             }
    private: System::Void backgroundWorker1_ProgressChanged(System::Object^  sender, System::ComponentModel::ProgressChangedEventArgs^  e)
         {
                if(!cameraBusy && cameraStatus)
                {
                    cameraBusy = 1;
                    IplImage *destination = cvCreateImage(cvSize(640, 480),frame->depth,frame->nChannels);
                    cvResize(frame, destination);
                    DrawCvImage(destination,pictureBox1);
                    cvReleaseImage(&destination);
                    cameraBusy = 0;
                }
             }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e)
     {
             cameraStatus = 0;
         }
private: System::Void button3_Click(System::Object^  sender, System::EventArgs^  e)
     {
            // How to I record capturing video;
         // Please help me.
     }
 private: System::Void saveFileDialog1_FileOk(System::Object^  sender, System::ComponentModel::CancelEventArgs^  e) {
          }
};
}

http://up.persianscript.ir/uploads/fc0a-Record-Video-NaderJSA.zip

Your comments are appreciated.
Best wishes
NaderJSA