不使用CvvImage类来在MFC中显示图像

/*
 * =====================================================================================
 *
 *       Filename:  a-kind-of-showDlg.cpp
 *
 *    Description:  不使用CvvImage类来在MFC中显示图像
 *
 *
 *        Version:  1.0
 *        Created:  2013/11/16 22:06:13
 *         Author:  yuliyang
 *
 *             Mail:  wzyuliyang911@gmail.com
 *             Blog:  http://www.cnblogs.com/yuliyang
 *
 * =====================================================================================
 */

// a-kind-of-showDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "a-kind-of-show.h"
#include "a-kind-of-showDlg.h"
#include "afxdialogex.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif

static     DWORD  Thread(LPVOID *lpvParam);        /* 显示图像线程 */
// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialogEx
{
public:
    CAboutDlg();

// 对话框数据
    enum { IDD = IDD_ABOUTBOX };

    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
    DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()

// CakindofshowDlg 对话框

CakindofshowDlg::CakindofshowDlg(CWnd* pParent /*=NULL*/)
    : CDialogEx(CakindofshowDlg::IDD, pParent)
{
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CakindofshowDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CakindofshowDlg, CDialogEx)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_BN_CLICKED(IDC_BUTTON1, &CakindofshowDlg::OnBnClickedButton1)
    ON_BN_CLICKED(IDC_BUTTON2, &CakindofshowDlg::OnBnClickedButton2)
END_MESSAGE_MAP()

// CakindofshowDlg 消息处理程序

BOOL CakindofshowDlg::OnInitDialog()
{
    CDialogEx::OnInitDialog();

    // 将“关于...”菜单项添加到系统菜单中。

    // IDM_ABOUTBOX 必须在系统命令范围内。
    ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
    ASSERT(IDM_ABOUTBOX < 0xF000);

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

    // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
    //  执行此操作
    SetIcon(m_hIcon, TRUE);            // 设置大图标
    SetIcon(m_hIcon, FALSE);        // 设置小图标

    // TODO: 在此添加额外的初始化代码
    /*------------------------------------------------------------------------------------------------------------
     *  初始化
     *
     *  显示图像 另一种方法
     *
     *
     *------------------------------------------------------------------------------------------------------------*/
    cv::namedWindow("INPUT", 1);
    HWND hWnd = (HWND) cvGetWindowHandle("INPUT");
    HWND hParent = ::GetParent(hWnd);
    ::SetParent(hWnd, GetDlgItem(IDC_FRAME)->m_hWnd);
    ::ShowWindow(hParent, SW_HIDE);

    return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

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

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CakindofshowDlg::OnPaint()
{
    if (IsIconic())
    {
        CPaintDC dc(this); // 用于绘制的设备上下文

        SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

        // 使图标在工作区矩形中居中
        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;

        // 绘制图标
        dc.DrawIcon(x, y, m_hIcon);
    }
    else
    {
        CDialogEx::OnPaint();
    }
}

//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CakindofshowDlg::OnQueryDragIcon()
{
    return static_cast<HCURSOR>(m_hIcon);
}

void CakindofshowDlg::OnBnClickedButton1()
{
    thread = AfxBeginThread((AFX_THREADPROC)  Thread, (LPVOID) this);
    // TODO: 在此添加控件通知处理程序代码

}

void CakindofshowDlg::ThreadProcess(void)
{
    capture = cvCaptureFromCAM(0);
    if(!capture)
    {
        //AfxMessageBox(L"ERROR: Cannot initialize video!");
        return;
    }
    cv::Size default_size;
    default_size.width = 280;                   /* 窗口大小 */
    default_size.height = 210;
    IplImage* frame;

    cv::Mat img_input;
    while (1)
    {
        cv::Mat img_input_aux;
        frame = cvQueryFrame(capture);
        img_input = cv::Mat(frame,true);
        cv::resize(img_input, img_input_aux, default_size);
        if(!img_input_aux.empty())
            cv::imshow("INPUT", img_input_aux);
        ::Sleep(1000);                          /* 代替waitkey() */
    }

}

 static DWORD  Thread(LPVOID *lpvParam)
{
    CakindofshowDlg *thr = (CakindofshowDlg*) lpvParam;
    thr->ThreadProcess();
    return NULL;
}

/*------------------------------------------------------------------------------------------------------------
 *  停止线程
 *------------------------------------------------------------------------------------------------------------*/
 void CakindofshowDlg::StopThread(void)
 {
     DWORD exit_code = NULL;

     if(thread != NULL)
     {
         GetExitCodeThread(thread->m_hThread, &exit_code);

         if(exit_code == STILL_ACTIVE)
         {
             ::TerminateThread(thread->m_hThread, 0);
             CloseHandle(thread->m_hThread);
         }

         thread->m_hThread = NULL;
         thread = NULL;
     }
 }

 void CakindofshowDlg::OnBnClickedButton2()
 {
     // TODO: 在此添加控件通知处理程序代码
     CakindofshowDlg::StopThread();
 }

程序有bug，不能退出。呵呵