AfxBeginThread的用法

 

//这是一个多线程控制进度条的例子，很简单，但是对于初学者掌握多线程的实现方法是非常硬手的。

//重点是AfxBeginThread的用法，

// MultiThread5Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "MultiThread5.h"
#include "MultiThread5Dlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

struct threadInfo
{
 UINT nMilliSecond;
 CProgressCtrl* pctrlProgress;//进程指针
};//结构体

threadInfo Info;
threadInfo Info2;//此处增添新进程的定义
class CAboutDlg : public CDialog
{
public:
 CAboutDlg();

// Dialog Data
 //{{AFX_DATA(CAboutDlg)
 enum { IDD = IDD_ABOUTBOX };
 //}}AFX_DATA

 // ClassWizard generated virtual function overrides
 //{{AFX_VIRTUAL(CAboutDlg)
 protected:
 virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
 //}}AFX_VIRTUAL

// Implementation
protected:
 //{{AFX_MSG(CAboutDlg)
 //}}AFX_MSG
 DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
 //{{AFX_DATA_INIT(CAboutDlg)
 //}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
 CDialog::DoDataExchange(pDX);
 //{{AFX_DATA_MAP(CAboutDlg)
 //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
 //{{AFX_MSG_MAP(CAboutDlg)
  // No message handlers
 //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMultiThread5Dlg dialog

CMultiThread5Dlg::CMultiThread5Dlg(CWnd* pParent /*=NULL*/)
 : CDialog(CMultiThread5Dlg::IDD, pParent)
{
 //{{AFX_DATA_INIT(CMultiThread5Dlg)
 m_nMilliSecond = 0;
 //}}AFX_DATA_INIT
 // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMultiThread5Dlg::DoDataExchange(CDataExchange* pDX)
{
 CDialog::DoDataExchange(pDX);
 //{{AFX_DATA_MAP(CMultiThread5Dlg)
 DDX_Control(pDX, IDC_PROGRESS1, m_ctrlProgress);
  DDX_Control(pDX, IDC_PROGRESS2, m_ctrlProgress2);
 DDX_Text(pDX, IDC_MILLISECOND, m_nMilliSecond);
 //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMultiThread5Dlg, CDialog)
 //{{AFX_MSG_MAP(CMultiThread5Dlg)
 ON_WM_SYSCOMMAND()
 ON_WM_PAINT()
 ON_WM_QUERYDRAGICON()
 ON_BN_CLICKED(IDC_START, OnStart)
 //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMultiThread5Dlg message handlers

BOOL CMultiThread5Dlg::OnInitDialog()
{
 CDialog::OnInitDialog();
 ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
 ASSERT(IDM_ABOUTBOX < 0xF000);

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

 SetIcon(m_hIcon, TRUE);   // Set big icon
 SetIcon(m_hIcon, FALSE);  // Set small icon
 
 // TODO: Add extra initialization here
 m_ctrlProgress.SetRange(0,99);
 m_ctrlProgress2.SetRange(0,99); //确定进度条的范围

 m_nMilliSecond=10;
 UpdateData(FALSE);
 
 return TRUE;  // return TRUE  unless you set the focus to a control
}

void CMultiThread5Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
 if ((nID & 0xFFF0) == IDM_ABOUTBOX)
 {
  CAboutDlg dlgAbout;
  dlgAbout.DoModal();
 }
 else
 {
  CDialog::OnSysCommand(nID, lParam);
 }
}

void CMultiThread5Dlg::OnPaint() 
{
 if (IsIconic())
 {
  CPaintDC dc(this); // device context for painting

  SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

  // Center icon in client rectangle
  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;

  // Draw the icon
  dc.DrawIcon(x, y, m_hIcon);
 }
 else
 {
  CDialog::OnPaint();
 }
}

HCURSOR CMultiThread5Dlg::OnQueryDragIcon()
{
 return (HCURSOR) m_hIcon;
}

void CMultiThread5Dlg::OnStart() 
{

 UpdateData(TRUE);
 Info.nMilliSecond=m_nMilliSecond;
 Info.pctrlProgress=&m_ctrlProgress;
 
 pThread=AfxBeginThread(ThreadFunc,&Info);
////////////////////////////////第二线程开始
 Info2.nMilliSecond=m_nMilliSecond;
 Info2.pctrlProgress=&m_ctrlProgress2;

pThread=AfxBeginThread(ThreadFunc,&Info2);  // 此处也可以用thradfunc2

}
UINT ThreadFunc(LPVOID lpParam)
{
 threadInfo* pInfo=(threadInfo*)lpParam;
 for(int i=0;i<100;i++)
 {
  int nTemp=pInfo->nMilliSecond;

  pInfo->pctrlProgress->SetPos(i);

  Sleep(nTemp);
 }
 return 0;
}// 线程的处理方法
UINT ThreadFunc2(LPVOID lpParam)
{
 threadInfo* pInfo=(threadInfo*)lpParam;
 for(int i=0;i<100;i++)
 {
  int nTemp=pInfo->nMilliSecond;
  
  pInfo->pctrlProgress->SetPos(i);
  
  Sleep(nTemp);
 }
 return 0;
}///也可以用上面的那个个函数实现