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();
}