MFC的实现摄像头（opencv）

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程序代码：

BOOL COpencvUIDlgDlg::OnInitDialog()
{
 CDialog::OnInitDialog();

 // Add "About..." menu item to system menu.

 // IDM_ABOUTBOX must be in the system command range.
 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
 ASSERT(IDM_ABOUTBOX < 0xF000);

 CMenu* pSysMenu = GetSystemMenu(FALSE);
 if (pSysMenu != NULL)
 {
  CString strAboutMenu;
  strAboutMenu.LoadString(IDS_ABOUTBOX);
  if (!strAboutMenu.IsEmpty())
  {
   pSysMenu->AppendMenu(MF_SEPARATOR);
   pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
  }
 }

 // Set the icon for this dialog.  The framework does this automatically
 //  when the application's main window is not a dialog
 SetIcon(m_hIcon, TRUE);   // Set big icon
 SetIcon(m_hIcon, FALSE);  // Set small icon
 
 // TODO: Add extra initialization here

 pwnd = GetDlgItem(IDC_SHOWPIC);
 //pwnd->MoveWindow(35,30,387,318);
    pDC =pwnd->GetDC();
 //pDC =GetDC();
    hDC= pDC->GetSafeHdc();
 pwnd->GetClientRect(&rect);

 CDC MemDC;
 CBitmap m_Bitmap1;
 m_Bitmap1.LoadBitmap(IDB_BLANK);
 MemDC.CreateCompatibleDC(NULL);
 MemDC.SelectObject(&m_Bitmap1);
 
 //CClientDC dc(this);
 pDC->StretchBlt(rect.left,rect.top,rect.Width(),rect.Height(),&MemDC,0,0,48,48,SRCCOPY);
 
 m_Bitmap1.DeleteObject();
 MemDC.DeleteDC();

 
 b_flagProcess=0;
 Invalidate();

 

 SetDlgItemText(IDC_EDIT_TIME,"无");
 SetDlgItemText(IDC_EDIT_FRAME_WIDTH,"无");
 SetDlgItemText(IDC_EDIT_FRAME_HEIGHT,"无");
 SetDlgItemText(IDC_EDIT_FPS,"无");
 SetDlgItemText(IDC_EDIT_FOURCC,"无");
 SetDlgItemText(IDC_EDIT_FRAME_COUNT,"无");

 

 return TRUE;  // return TRUE  unless you set the focus to a control
}

void COpencvUIDlgDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
 if ((nID & 0xFFF0) == IDM_ABOUTBOX)
 {
  CAboutDlg dlgAbout;
  dlgAbout.DoModal();
 }
 else
 {
  CDialog::OnSysCommand(nID, lParam);
 }
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void COpencvUIDlgDlg::OnPaint()
{
 if (IsIconic())
 {
  CPaintDC dc(this); // device context for painting

  SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

  // Center icon in client rectangle
  int cxIcon = GetSystemMetrics(SM_CXICON);
  int cyIcon = GetSystemMetrics(SM_CYICON);
  CRect rect;
  GetClientRect(&rect);
  int x = (rect.Width() - cxIcon + 1) / 2;
  int y = (rect.Height() - cyIcon + 1) / 2;

  // Draw the icon
  dc.DrawIcon(x, y, m_hIcon);
 }
 else
 {
  CDialog::OnPaint();
 }

 if (!b_flagProcess)
 {
  CDC MemDC;
  CBitmap m_Bitmap1;
  m_Bitmap1.LoadBitmap(IDB_BLANK);
  MemDC.CreateCompatibleDC(NULL);
  MemDC.SelectObject(&m_Bitmap1);
  
  //CClientDC dc(this);
  pDC->StretchBlt(rect.left,rect.top,rect.Width(),rect.Height(),&MemDC,0,0,48,48,SRCCOPY);
  
  m_Bitmap1.DeleteObject();
  MemDC.DeleteDC();
 }
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR COpencvUIDlgDlg::OnQueryDragIcon()
{
 return (HCURSOR) m_hIcon;
}

void COpencvUIDlgDlg::OnTimer(UINT nIDEvent)
{
 // TODO: Add your message handler code here and/or call default
 // KillTimer(nIDEvent);
 m_Frame=cvQueryFrame(m_Video);
// cvNamedWindow("new",1);
// cvShowImage("new",m_Frame);
 m_CvvImage.CopyOf(m_Frame,1);
    m_CvvImage.DrawToHDC(hDC, &rect);
    //cvWaitKey(10);
 b_flagProcess=1;
 

 m_vieoProtery=cvGetCaptureProperty(m_Video,CV_CAP_PROP_POS_MSEC);
 itoa(m_vieoProtery,chEdit,10);
 SetDlgItemText(IDC_EDIT_TIME,chEdit);
 m_vieoProtery=cvGetCaptureProperty(m_Video,CV_CAP_PROP_FRAME_WIDTH);
 itoa(m_vieoProtery,chEdit,10);
 SetDlgItemText(IDC_EDIT_FRAME_WIDTH,chEdit);
 m_vieoProtery=cvGetCaptureProperty(m_Video,CV_CAP_PROP_FRAME_HEIGHT);
 itoa(m_vieoProtery,chEdit,10);
 SetDlgItemText(IDC_EDIT_FRAME_HEIGHT,chEdit);
 m_vieoProtery=cvGetCaptureProperty(m_Video,CV_CAP_PROP_FPS);
 itoa(m_vieoProtery,chEdit,10);
 SetDlgItemText(IDC_EDIT_FPS,chEdit);
 m_vieoProtery=cvGetCaptureProperty(m_Video,CV_CAP_PROP_FOURCC);
 itoa(m_vieoProtery,chEdit,10);
 SetDlgItemText(IDC_EDIT_FOURCC,chEdit);
 m_fameCount++;
// m_vieoProtery=cvGetCaptureProperty(m_Video,CV_CAP_PROP_FRAME_COUNT);
 itoa(m_fameCount,chEdit,10);
 SetDlgItemText(IDC_EDIT_FRAME_COUNT,chEdit);

 if (b_flagSaveMovie)
 {
  if (!m_Movie)
   return;  
  cvWriteFrame(m_Movie,m_Frame);
 }
 

 CDialog::OnTimer(nIDEvent);
}

void COpencvUIDlgDlg::OnOpencamera()
{
 // TODO: Add your control notification handler code here

                      
 //m_Video=cvCaptureFromCAM(-1);
 m_Video=cvCreateCameraCapture(-1);

 if (!m_Video)
 {
  AfxMessageBox("无法打开摄像头");
  return;
 }
 
 SetTimer(1,100,NULL);

}

void COpencvUIDlgDlg::OnClosecamera()
{
 // TODO: Add your control notification handler code here
 KillTimer(1);
 cvReleaseCapture(&m_Video);
 cvReleaseVideoWriter(&m_Movie);
 b_flagProcess=0;
 m_fameCount=0;
 b_flagSaveMovie=0;

 CDC MemDC;
 CBitmap m_Bitmap1;
 m_Bitmap1.LoadBitmap(IDB_BLANK);
 MemDC.CreateCompatibleDC(NULL);
 MemDC.SelectObject(&m_Bitmap1);
 pDC->StretchBlt(rect.left,rect.top,rect.Width(),rect.Height(),&MemDC,0,0,48,48,SRCCOPY);
 m_Bitmap1.DeleteObject();
 MemDC.DeleteDC();
 
 SetDlgItemText(IDC_EDIT_TIME,"无");
 SetDlgItemText(IDC_EDIT_FRAME_WIDTH,"无");
 SetDlgItemText(IDC_EDIT_FRAME_HEIGHT,"无");
 SetDlgItemText(IDC_EDIT_FPS,"无");
 SetDlgItemText(IDC_EDIT_FOURCC,"无");
 SetDlgItemText(IDC_EDIT_FRAME_COUNT,"无");
}

void COpencvUIDlgDlg::OnGrabframe()
{
 // TODO: Add your control notification handler code here
 if (!m_Video)
  return;

 m_GrabFrame=cvQueryFrame(m_Video);
 if (!m_GrabFrame)
  return;

 static char countsnap='1';
 CString   m_name="";
 m_name=+countsnap;
 m_name+=".bmp"; 
 
 IplImage * m_snap=cvCreateImage(cvGetSize(m_GrabFrame),m_GrabFrame->depth,m_GrabFrame->nChannels);
 cvCopy(m_GrabFrame,m_snap,NULL);

 const char* pszStr = m_name.GetBuffer(m_name.GetLength());
 cvSaveImage(pszStr,m_snap); //把图像写入文件

 countsnap++;

}

//DEL BOOL COpencvUIDlgDlg::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext)
//DEL {
//DEL  // TODO: Add your specialized code here and/or call the base class
//DEL  CDC MemDC;
//DEL  CBitmap m_Bitmap1;
//DEL  m_Bitmap1.LoadBitmap(IDB_BLANK);
//DEL  MemDC.CreateCompatibleDC(NULL);
//DEL  MemDC.SelectObject(&m_Bitmap1);
//DEL  
//DEL  //CClientDC dc(this);
//DEL  pDC->StretchBlt(rect.left,rect.top,rect.Width(),rect.Height(),&MemDC,0,0,48,48,SRCCOPY);
//DEL  
//DEL  m_Bitmap1.DeleteObject();
//DEL  MemDC.DeleteDC(); 
//DEL  return CDialog::Create(IDD, pParentWnd);
//DEL }

void COpencvUIDlgDlg::OnSavemovie()
{
 // TODO: Add your control notification handler code here
 //m_Movie=cvCreateVideoWriter("video.avi",-1,10,cvSize(352,288),1);
 if (b_flagProcess)
 {
  //m_Movie=cvCreateVideoWriter("video.avi",CV_FOURCC('P','I','M','1'),10,cvSize(352,288),1);
  m_Movie=cvCreateVideoWriter("video.avi",-1,10,cvSize(352,288),1);
  b_flagSaveMovie=1;
 }

}

void COpencvUIDlgDlg::OnStopsavemovie()
{
 // TODO: Add your control notification handler code here
 cvReleaseVideoWriter(&m_Movie);
 b_flagSaveMovie=0; 
}


变量说明

CvvImage m_CvvImage;
CvCapture * m_Video;
IplImage* m_Frame;//用于存储一帧
IplImage* m_GrabFrame;//用于存储一帧
CRect rect;
CDC *pDC;
HDC hDC;
CWnd *pwnd;
bool b_flagProcess;
bool b_flagSaveMovie=0;
CvVideoWriter* m_Movie;
char chEdit[10];
double m_vieoProtery;
int m_fameCount=0;

 

变量均为全局变量