opencv 读取摄像头并保存

	m_capture = 0;
	m_writer = 0;
	m_frame = 0;
	m_capture = cvCaptureFromCAM(0/*m_CamIndex*/);
	int count = 0;
	m_frame = cvQueryFrame( m_capture );
	while (m_frame==NULL)
	{
		m_frame = cvQueryFrame( m_capture );
		count++;
	}
	m_writer=cvCreateVideoWriter(m_strVideoPathTemp,CV_FOURCC('X','V','I','D'),25.0,cvSize(m_frame->width,m_frame->height));

上面的代码的变量定义如下：

	CvCapture *		m_capture;
	CvVideoWriter*	m_writer;
	IplImage*		m_frame;

这里先设置一个定时器：

SetTimer(2,25,NULL);

接下来就需要在ontimer消息响应函数中添加代码：

void CxxView::OnTimer(UINT_PTR nIDEvent)
{
	// TODO: Add your message handler code here and/or call default

	switch (nIDEvent)
	{
	//case 1:
	//	getProbeRecord();
	//	UpdateData(FALSE);
	//	break;
	case 2:

		CMainFrame *pMain=(CMainFrame *)AfxGetApp()->m_pMainWnd;
		m_hWndStatic = pMain->m_wndNativeView.m_wndDrawContent.m_widget_NativeViedo.GetSafeHwnd();
		m_pWndStatic = FromHandle(m_hWndStatic);
		if( !m_capture ) //打开视频流失败
		{
			AfxMessageBox("数据流载入失败");
			KillTimer(2);
			return ;
		}
		m_frame = cvQueryFrame( m_capture );
		if (m_frame)
		{
			int frameH    = (int) cvGetCaptureProperty(m_capture, CV_CAP_PROP_FRAME_HEIGHT);    
			int frameW    = (int) cvGetCaptureProperty(m_capture, CV_CAP_PROP_FRAME_WIDTH);    

			cvWriteFrame(m_writer, m_frame);
			m_pWndStatic->GetClientRect(&m_oRect);
			videoFrameDisplay(m_frame,m_oRect,m_hWndStatic,m_pWndStatic->GetDC(),1);
		}
		break;
	}

	CView::OnTimer(nIDEvent);
}

最后

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