MFC的多线程编程示例.doc

今天给出一个MFC的多线程编程示例吧，难度等级，中！示例如下:(1)先用appwizards生成一个MFC的Dialog应用模板,假定对话框类为CTest01Dlg。(2)再添入两个oicq的bmp文件到资源中去(3)添加一个按钮(button)到对话框上.用作启动、停止动画的button(4)用ClassWizard为button/onclick及dlg/ontimer生成事件响应函数，(5)用Resource Symbol加入一个标识定义IDC_TIMER1(6)在ClassView中为CTest01Dlg加入以下成员变量和成员函数CriticalSection ccs;CBitmap bm2;CWinThread* pMyThread;static UINT MyThreadProc( LPVOID pParam);void DisplayFace(CPoint r);实现文件中加入相应代码(见下面)(7)stdafx.h中加入i nclude 源代码如下,凡是我新加的代码周围都有注释包围，其它是ClassWizards自动写的: / stdafx.h : include file for standard system include files,/ or project specific include files that are used frequently, but/ are changed infrequentlyfile:/ #if !defined(AFX_STDAFX_H_5B92DAA8_FE27_4702_8037_A2538343E69D_INCLUDED_)#define AFX_STDAFX_H_5B92DAA8_FE27_4702_8037_A2538343E69D_INCLUDED_#if _MSC_VER 1000#pragma once#endif / _MSC_VER 1000#define VC_EXTRALEAN / Exclude rarely-used stuff from Windows headersi nclude / MFC core and standard componentsi nclude / MFC extensionsi nclude / MFC support for Internet Explorer 4 Common Controlsfile:/加入头引用主要是CCriticalSection对象的定义.i nclude file:/加入结束#ifndef _AFX_NO_AFXCMN_SUPPORTi nclude / MFC support for Windows Common Controls#endif / _AFX_NO_AFXCMN_SUPPORTfile:/AFX_INSERT_LOCATION/ Microsoft Visual C+ will insert additional declarations immediately before the previous line.#endif / !defined(AFX_STDAFX_H_5B92DAA8_FE27_4702_8037_A2538343E69D_INCLUDED_)/ test01Dlg.h : header filefile:/#if !defined(AFX_TEST01DLG_H_F3780E23_CCFC_468C_A262_50FFF1D991BC_INCLUDED_)#define AFX_TEST01DLG_H_F3780E23_CCFC_468C_A262_50FFF1D991BC_INCLUDED_#if _MSC_VER 1000#pragma once#endif / _MSC_VER 1000/ CTest01Dlg dialogclass CTest01Dlg : public CDialog/ Constructionpublic:file:/加入CBitmap bm2;CCriticalSection ccs;CWinThread* pMyThread;static UINT MyThreadProc( LPVOID pParam);void DisplayFace(CPoint r);CTest01Dlg(CWnd* pParent = NULL); / standard constructorfile:/加入结束/ Dialog Datafile:/AFX_DATA(CTest01Dlg)enum IDD = IDD_TEST01_DIALOG ;/ NOTE: the ClassWizard will add data members herefile:/AFX_DATA/ ClassWizard generated virtual function overridesfile:/AFX_VIRTUAL(CTest01Dlg)protected:virtual void DoDataExchange(CDataExchange* pDX); / DDX/DDV supportfile:/AFX_VIRTUAL/ Implementationprotected:HICON m_hIcon;/ Generated message map functionsfile:/AFX_MSG(CTest01Dlg)virtual BOOL OnInitDialog();afx_msg void OnSysCommand(UINT nID, LPARAM lParam);afx_msg void OnPaint();afx_msg HCURSOR OnQueryDragIcon();afx_msg void OnButton1();afx_msg void OnTimer(UINT nIDEvent);file:/AFX_MSGDECLARE_MESSAGE_MAP();file:/AFX_INSERT_LOCATION/ Microsoft Visual C+ will insert additional declarations immediately before the previous line.#endif / !defined(AFX_TEST01DLG_H_F3780E23_CCFC_468C_A262_50FFF1D991BC_INCLUDED_)/ test01Dlg.cpp : implementation filefile:/i nclude stdafx.hi nclude test01.hi nclude test01Dlg.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/ CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialogpublic:CAboutDlg();/ Dialog Datafile:/AFX_DATA(CAboutDlg)enum IDD = IDD_ABOUTBOX ;file:/AFX_DATA/ ClassWizard generated virtual function overridesfile:/AFX_VIRTUAL(CAboutDlg)protected:virtual void DoDataExchange(CDataExchange* pDX); / DDX/DDV supportfile:/AFX_VIRTUAL/ Implementationprotected:file:/AFX_MSG(CAboutDlg)file:/AFX_MSGDECLARE_MESSAGE_MAP();CAboutDlg:CAboutDlg() : CDialog(CAboutDlg:IDD)file:/AFX_DATA_INIT(CAboutDlg)file:/AFX_DATA_INITvoid CAboutDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);file:/AFX_DATA_MAP(CAboutDlg)file:/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CAboutDlg, CDialog)file:/AFX_MSG_MAP(CAboutDlg)/ No message handlersfile:/AFX_MSG_MAPEND_MESSAGE_MAP()/ CTest01Dlg dialogCTest01Dlg:CTest01Dlg(CWnd* pParent /*=NULL*/): CDialog(CTest01Dlg:IDD, pParent)file:/AFX_DATA_INIT(CTest01Dlg)/ NOTE: the ClassWizard will add member initialization herefile:/AFX_DATA_INIT/ Note that LoadIcon does not require a subsequent DestroyIcon in Win32m_hIcon = AfxGetApp()-LoadIcon(IDR_MAINFRAME);file:/加入pMyThread =NULL;file:/加入结束void CTest01Dlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);file:/AFX_DATA_MAP(CTest01Dlg)/ NOTE: the ClassWizard will add DDX and DDV calls herefile:/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CTest01Dlg, CDialog)file:/AFX_MSG_MAP(CTest01Dlg)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(IDC_BUTTON1, OnButton1)ON_WM_TIMER()file:/AFX_MSG_MAPEND_MESSAGE_MAP()/ CTest01Dlg message handlersBOOL CTest01Dlg:OnInitDialog()CDialog:OnInitDialog();/ Add About. menu item to system menu./ IDM_ABOUTBOX must be in the system command range.ASSERT(IDM_ABOUTBOX & 0xFFF0) = IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX AppendMenu(MF_SEPARATOR);pSysMenu-AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);/ Set the icon for this dialog. The framework does this automatically/ when the applications main window is not a dialogSetIcon(m_hIcon, TRUE); / Set big iconSetIcon(m_hIcon, FALSE); / Set small icon/ TODO: Add extra initialization herefile:/加入bm0.LoadBitmap (IDB_BITMAP1);bm1.LoadBitmap (IDB_BITMAP3);file:/加入结束return TRUE; / return TRUE unless you set the focus to a controlvoid CTest01Dlg:OnSysCommand(UINT nID, LPARAM lParam)if (nID & 0xFFF0) = IDM_ABOUTBOX)CAboutDlg dlgAbout;dlgAbout.DoModal();elseCDialog:OnSysCommand(nID, lParam);void CTest01Dlg:OnPaint() if (IsIconic()CPaintDC dc(this); / device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);/ Center icon in client rectangleint 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;/ Draw the icondc.DrawIcon(x, y, m_hIcon);elseCDialog:OnPaint();HCURSOR CTest01Dlg:OnQueryDragIcon()return (HCURSOR) m_hIcon;file:/加入void CTest01Dlg:OnButton1() static BOOL bStarted=FALSE;if (!bStarted)SetTimer(IDC_TIMER1,500,NULL); pMyThread=AfxBeginThread(MyThreadProc,this);elseif (pMyThread)pMyThread-PostThreadMessage (WM_QUIT,0,0);:WaitForSingleObject(pMyThread-m_hThread ,INFINITE);pMyThread=NULL;KillTimer(IDC_TIMER1);bStarted=!bStarted;(CButton*)GetDlgItem(IDC_BUTTON1)-SetWindowText(bStarted?_T(停止):_T(启动);void CTest01Dlg:OnTimer(UINT nIDEvent) if (nIDEvent=IDC_TIMER1)DisplayFace(CPoint(10,10);CDialog:OnTimer(nIDEvent);void CTest01Dlg:DisplayFace(CPoint p)static int i=0;ccs.Lock ();BITMAP bmo;bmi.GetObject (sizeof(bmo),&bmo);CClientDC dc(this);CDC bmpDC;bmpDC.CreateCompatibleDC (&dc);bmpDC.SelectObject (&bmi);dc.BitBlt (p.x ,p.y ,bmo.bmWidth,bmo.bmHeight,&bmpDC,0,0,SRCCOPY);i+;if (i=sizeof(bm)/sizeof(bm0) i=0;ccs.Unlock ();UINT CTest01Dlg:MyThreadProc(LPVOID pParam)CTest01Dlg *me=(CTest01Dlg *)pParam;MSG msg;while(!PeekMessage(&msg,NULL,0,0,PM_NOREMOVE)me-DisplayFace (CPoint(100,10);:Sleep (200);return 0;file:/加入结束MFC创建多线程实例 收藏 平时在MFC里使用多线程时其实是很方面的，因为微软提供了一个API让我们很方面的去创建线程：下面是MSDN中关于CreateThread的函数原型：1、函数原型声明： view plaincopy to clipboardprint?CreateThread The CreateThread function creates a thread to execute within the virtual address space of the calling process. To create a thread that runs in the virtual address space of another process, use the CreateRemoteThread function. HANDLE CreateThread( LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId ); CreateThreadThe CreateThread function creates a thread to execute within the virtual address space of the calling process.To create a thread that runs in the virtual address space of another process, use the CreateRemoteThread function.HANDLE CreateThread( LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize, LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId); 2、参数说明：view plaincopy to clipboardprint?lpThreadAttributes：指向SECURITY_ATTRIBUTES型态的结构的指针。在Windows 98中忽略该参数。在Windows NT中，它被设为NULL，表示使用缺省值。 dwStackSize，线程堆栈大小，一般=0，在任何情况下，Windows根据需要动态延长堆栈的大小。 lpStartAddress，指向线程函数的指针，形式：函数名，函数名称没有限制，但是必须以下列形式声明： DWORD WINAPI ThreadProc (LPVOID pParam) ，格式不正确将无法调用成功。 lpParameter：向线程函数传递的参数，是一个指向结构的指针，不需传递参数时，为Nil。 dwCreationFlags ：线程标志,可取值如下 CREATE_SUSPENDED： 创建一个挂起的线程 0 ：创建后立即激活。 lpThreadId:保存新线程的id。 lpThreadAttributes：指向SECURITY_ATTRIBUTES型态的结构的指针。在Windows 98中忽略该参数。在Windows NT中，它被设为NULL，表示使用缺省值。dwStackSize，线程堆栈大小，一般=0，在任何情况下，Windows根据需要动态延长堆栈的大小。lpStartAddress，指向线程函数的指针，形式：函数名，函数名称没有限制，但是必须以下列形式声明：DWORD WINAPI ThreadProc (LPVOID pParam) ，格式不正确将无法调用成功。 lpParameter：向线程函数传递的参数，是一个指向结构的指针，不需传递参数时，为Nil。 dwCreationFlags ：线程标志,可取值如下 CREATE_SUSPENDED： 创建一个挂起的线程 0 ：创建后立即激活。 lpThreadId:保存新线程的id。 3、返回值：函数成功，返回线程句柄；函数失败返回false。4、实例代码：A、新建一个对话框工程为MFC，在MFCDlg.h添加两个成员函数，注意一定要是静态的，代码如下：view plaincopy to clipboardprint?/ / CMFCDlg dialog class CMFCDlg : public CDialog / Construction public: CMFCDlg(CWnd* pParent = NULL); / standard constructor / 线程B1、B2函数 static DWORD WINAPI ThreadB1(LPVOID lpParam); static DWORD WINAPI ThreadB2(LPVOID lpParam); . / CMFCDlg dialogclass CMFCDlg : public CDialog/ Constructionpublic:CMFCDlg(CWnd* pParent = NULL);/ standard constructor/ 线程B1、B2函数static DWORD WINAPI ThreadB1(LPVOID lpParam);static DWORD WINAPI ThreadB2(LPVOID lpParam);. B、在cpp文件中实现函数，添加代码如下：view plaincopy to clipboardprint?DWORD WINAPI CMFCDlg:ThreadB1(LPVOID lpParam) / 定义结构对象 PROCESS_INFORMATION pi; STARTUPINFO si; BOOL bRet; / 申请空间 ZeroMemory(&pi,sizeof(PROCESS_INFORMATION); ZeroMemory(&si,sizeof(STARTUPINFO); / 设置进程启动属性 si.cb = sizeof(STARTUPINFO); si.lpReserved = NULL; si.lpDesktop = NULL; si.lpTitle = NULL; si.dwFlags = STARTF_USESHOWWINDOW; si.wShowWindow = SW_SHOWNORMAL; si.cbReserved2 = NULL; si.lpReserved2 = NULL; bRet = CreateProcess(_T(C:Program FilesInternet ExplorerIEXPLORE.exe), _T(), NULL,NULL,FALSE,0,NULL,NULL,&si,&pi); return 0; DWORD WINAPI CMFCDlg:ThreadB2(LPVOID lpParam) / 定义结构对象 PROCESS_INFORMATION pi; STARTUPINFO si; BOOL bRet; / 申请空间 ZeroMemory(&pi,sizeof(PROCESS_INFORMATION); ZeroMemory(&si,sizeof(STARTUPINFO); / 设置进程启动属性 si.cb = sizeof(STARTUPINFO); si.lpReserved = NULL; si.lpDesktop = NULL; si.lpTitle = NULL; si.dwFlags = STARTF_USESHOWWINDOW; si.wShowWindow = SW_SHOWNORMAL; si.cbReserved2 = NULL; si.lpReserved2 = NULL; bRet = CreateProcess(_T(C:Program FilesInternet ExplorerIEXPLORE.exe), _T(/wangningyu), NULL,NULL,FALSE,0,NULL,NULL,&si,&pi); return 0; DWORD WINAPI CMFCDlg:ThreadB1(LPVOID lpParam) / 定义结构对象PROCESS_INFORMATION pi;STARTUPINFOsi;BOOLbRet;/ 申请空间ZeroMemory(&pi,sizeof(PROCESS_INFORMATION);ZeroMemory(&si,sizeof(STARTUPINFO);/ 设置进程启动属性si.cb=sizeof(STARTUPINFO);si.lpReserved=NULL;si.lpDesktop=NULL;si.lpTitle=NULL;si.dwFlags=STARTF_USESHOWWINDOW;si.wShowWindow=SW_SHOWNORMAL;si.cbReserved2=NULL;si.lpReserved2=NULL;bRet = CreateProcess(_T(C:Program FilesInternet ExplorerIEXPLORE.exe), _T(), NULL,NULL,FALSE