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一、目的：

1、想知道：MFC使用opencv在picture控件上面播放摄像头视频

二、参考

1、

三、操作

1、MFC中创建picture控件：IDC_camera

1、MFC中创建Camera类

①Camera.h

#pragma once#include "afxwin.h"#include "Resource.h"#include "opencv.hpp"#include  "videoio.hpp"#include "CvvImage.h"using namespace std;using namespace cv;class Camera{public:	Camera();	~Camera();public:	CWnd *m_pCWnd;//相机：窗口类指针	HWND m_HWND;//相机：窗口类句柄	bool m_bIsCanPlay=false;//相机是否能够播放	VideoCapture m_videoCapture;public:	//相机：在picture上面显示相机画面	void CameraPlayOnPicture();};

①Camera.cpp

#include "stdafx.h"#include "Camera.h"Camera::Camera(){	}Camera::~Camera(){}void Camera::CameraPlayOnPicture(){	//测试：此地方不使用while	if (m_bIsCanPlay)	{		if (!m_videoCapture.isOpened())		{			m_videoCapture.open(0);		};		Mat frame;		m_videoCapture >> frame;		IplImage* pFrame = (IplImage *)&IplImage(frame);					//IplImage* 与Mat 格式相互转换：Mat转换为IplImage		CDC *pCDC = AfxGetApp()->GetMainWnd()->GetDlgItem(IDC_camera)->GetDC();	//获得控件设备上下文指针，IDC_CAMERA为控件的ID		HDC hDC = pCDC->GetSafeHdc();		 //转换为句柄		CRect rect;		AfxGetApp()->GetMainWnd()->GetDlgItem(IDC_camera)->GetClientRect(&rect); //获得控件的位置		AfxGetApp()->GetMainWnd()->GetDlgItem(IDC_camera)->MoveWindow(0, 0, 1920, 1080);		CvvImage cimg;		cimg.CopyOf(pFrame);		cimg.DrawToHDC(hDC, &rect);						//显示图像		if (m_pCWnd == NULL)		{			m_pCWnd = AfxGetApp()->GetMainWnd()->GetDlgItem(IDC_camera);//找到IDC_inVideo控件		}		if (m_HWND == NULL)		{			m_HWND = m_pCWnd->GetSafeHwnd();//得到窗口指针句柄		}		ReleaseDC(m_HWND, hDC);																		 //CDC类在用完后记得释放	}}

1、MyLiftDlg中创建线程，不断播放监控视频