// MutexExDlg.h : 头文件

//

#pragma once

// CMutexExDlg 对话框

class CMutexExDlg : public CDialogEx

{

// 构造

public:

    CMutexExDlg(CWnd* pParent = NULL);    // 标准构造函数

// 对话框数据

    enum { IDD = IDD_MUTEXEX_DIALOG };

    protected:

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

    static HANDLE hThread[];

    static HANDLE m_Mutex;

    static HANDLE m_Event;

    static DWORD WINAPI ThreadProc0(LPVOID lpParameter);

    static DWORD WINAPI ThreadProc1(LPVOID lpParameter);

    static DWORD WINAPI ThreadProc2(LPVOID lpParameter);

    static DWORD WINAPI ThreadProc3(LPVOID lpParameter);

// 实现

protected:

    HICON m_hIcon;

    // 生成的消息映射函数

    virtual BOOL OnInitDialog();

    afx_msg void OnPaint();

    afx_msg HCURSOR OnQueryDragIcon();

    DECLARE_MESSAGE_MAP()

public:

    virtual BOOL PreTranslateMessage(MSG* pMsg);

    afx_msg void OnBnClickedButton1();

    static int m_Edit0;

    static int m_Edit1;

    static int m_Edit2;

    static int m_Edit3;

};

// MutexExDlg.cpp : 实现文件

//

#include "stdafx.h"

#include "MutexEx.h"

#include "MutexExDlg.h"

#include "afxdialogex.h"

#ifdef _DEBUG

#define new DEBUG_NEW

#endif

// CMutexExDlg 对话框

CMutexExDlg::CMutexExDlg(CWnd* pParent /*=NULL*/)

    : CDialogEx(CMutexExDlg::IDD, pParent)

{

    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

}

void CMutexExDlg::DoDataExchange(CDataExchange* pDX)

{

    CDialogEx::DoDataExchange(pDX);

    DDX_Text(pDX, IDC_EDIT1, m_Edit0);

    DDV_MinMaxInt(pDX, m_Edit0, , );

    DDX_Text(pDX, IDC_EDIT2, m_Edit1);

    DDV_MinMaxInt(pDX, m_Edit1, , );

    DDX_Text(pDX, IDC_EDIT3, m_Edit2);

    DDV_MinMaxInt(pDX, m_Edit2, , );

    DDX_Text(pDX, IDC_EDIT4, m_Edit3);

    DDV_MinMaxInt(pDX, m_Edit3, , );

}

BEGIN_MESSAGE_MAP(CMutexExDlg, CDialogEx)

    ON_WM_PAINT()

    ON_WM_QUERYDRAGICON()

    ON_BN_CLICKED(IDC_BUTTON1, &CMutexExDlg::OnBnClickedButton1)

END_MESSAGE_MAP()

// CMutexExDlg 消息处理程序

BOOL CMutexExDlg::OnInitDialog()

{

    CDialogEx::OnInitDialog();

    // 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

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

}

// 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 CMutexExDlg::OnPaint()

{

    if (IsIconic())

    {

        CPaintDC dc(this); // 用于绘制的设备上下文

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

        // 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 + ) / ;

        int y = (rect.Height() - cyIcon + ) / ;

        // 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 CMutexExDlg::OnQueryDragIcon()

{

    return static_cast<HCURSOR>(m_hIcon);

}

// 重写虚函数 PreTranslateMessage 屏蔽掉Esc键和Enter键

BOOL CMutexExDlg::PreTranslateMessage(MSG* pMsg)

{

    if (pMsg->message == WM_KEYDOWN)

    {

        int keyCode = (int)pMsg->wParam;

        if (keyCode == VK_ESCAPE || keyCode == VK_RETURN)

        {

            return TRUE;

        }

    }

    return CDialogEx::PreTranslateMessage(pMsg);

}

HANDLE CMutexExDlg::m_Mutex = NULL;

HANDLE CMutexExDlg::m_Event = NULL;

int CMutexExDlg::m_Edit0 = ;

int CMutexExDlg::m_Edit1 = ;

int CMutexExDlg::m_Edit2 = ;

int CMutexExDlg::m_Edit3 = ;

HANDLE CMutexExDlg::hThread[] = { NULL };

// 抢红包按钮点击事件处理函数

void CMutexExDlg::OnBnClickedButton1()

{

    // 获取编辑框内容到str变量

    CString str;

    GetDlgItem(IDC_EDIT1)->GetWindowText(str);

    // CString 转 int

    m_Edit0 = _ttoi(str);

    m_Edit1 = ;

    m_Edit2 = ;

    m_Edit3 = ;

    // 这里需要创建一个线程 因为 WaitForMultipleObjects 会阻塞住 另外把this指针作为参数传递给线程，用于子线程更新编辑框内容

    HANDLE hThread0 = ::CreateThread(NULL, NULL, ThreadProc0, this, NULL, NULL);

    CloseHandle(hThread0);

}

DWORD WINAPI CMutexExDlg::ThreadProc0(LPVOID lpParameter)

{

    CMutexExDlg* pDlg = (CMutexExDlg*)lpParameter;

    // 创建一个事件

    m_Event = ::CreateEvent(NULL,

        FALSE, // FALSE 代表 WaitForSingleObject到之后，事件还是未通知状态，需要手动设置已通知状态

        FALSE,  // FALSE 代表 事件创建完之后，不能马上被 WaitForSingleObject 到

        NULL);

    // 创建三个线程抢红包

    hThread[] = ::CreateThread(NULL, NULL, ThreadProc1, lpParameter, NULL, NULL);

    hThread[] = ::CreateThread(NULL, NULL, ThreadProc2, lpParameter, NULL, NULL);

    hThread[] = ::CreateThread(NULL, NULL, ThreadProc3, lpParameter, NULL, NULL);

    // 设置编辑框内容

    ::SetWindowText(::GetDlgItem(pDlg->m_hWnd, IDC_EDIT1), L"");

    // 将对象设置为已通知状态

    ::SetEvent(m_Event);

    // 使用WaitForMultipleObjects监听所有线程，当线程全部结束后，调用CloseHandle关闭句柄.

    WaitForMultipleObjects(, hThread, TRUE, -);

    ::CloseHandle(hThread[]);

    ::CloseHandle(hThread[]);

    ::CloseHandle(hThread[]);

    ::CloseHandle(m_Mutex);

    return ;

}

// 线程回调函数1

DWORD WINAPI CMutexExDlg::ThreadProc1(LPVOID lpParameter)

{

    CMutexExDlg* pDlg = (CMutexExDlg*)lpParameter;

    while (true)

    {

        WaitForSingleObject(m_Event, -);

        ::SetWindowText(::GetDlgItem(pDlg->m_hWnd, IDC_EDIT2), L"");

        Sleep();

        // 将对象设置为已通知状态

        ::SetEvent(m_Event);

    }

    return ;

}

// 线程回调函数2

DWORD WINAPI CMutexExDlg::ThreadProc2(LPVOID lpParameter)

{

    CMutexExDlg* pDlg = (CMutexExDlg*)lpParameter;

    while (true)

    {

        WaitForSingleObject(m_Event, -);

        ::SetWindowText(::GetDlgItem(pDlg->m_hWnd, IDC_EDIT3), L"");

        Sleep();

        // 将对象设置为已通知状态

        ::SetEvent(m_Event);

    }

    return ;

}

// 线程回调函数3

DWORD WINAPI CMutexExDlg::ThreadProc3(LPVOID lpParameter)

{

    CMutexExDlg* pDlg = (CMutexExDlg*)lpParameter;

    while (true)

    {

        WaitForSingleObject(m_Event, -);

        ::SetWindowText(::GetDlgItem(pDlg->m_hWnd, IDC_EDIT4), L"");

        Sleep();

        // 将对象设置为已通知状态

        ::SetEvent(m_Event);

    }

    return ;

}