www.pudn.com > MultiThread.rar > MultiThread2Dlg.cpp

// MultiThread2Dlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "MultiThread2.h" 
#include "MultiThread2Dlg.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
 
/************************************************************************/ 
/* 打开ClassWizard，为编辑框IDC_COUNT添加int型变量m_nCount。 
在MultiThread2Dlg.cpp文件中添加： 
                                                                     */ 
/************************************************************************/ 
void ThreadFunc(int integer) 
{ 
	int i; 
	for(i=0;iLoadIcon(IDR_MAINFRAME); 
} 
 
void CMultiThread2Dlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CMultiThread2Dlg) 
	DDX_Text(pDX, IDC_COUNT, m_nCount); 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CMultiThread2Dlg, CDialog) 
	//{{AFX_MSG_MAP(CMultiThread2Dlg) 
	ON_WM_SYSCOMMAND() 
	ON_WM_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_BN_CLICKED(IDC_START, OnStart) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CMultiThread2Dlg message handlers 
 
BOOL CMultiThread2Dlg::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 < 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); 
		} 
	} 
 
	// Set the icon for this dialog.  The framework does this automatically 
	//  when the application's main window is not a dialog 
	SetIcon(m_hIcon, TRUE);			// Set big icon 
	SetIcon(m_hIcon, FALSE);		// Set small icon 
	 
	// TODO: Add extra initialization here 
	 
	return TRUE;  // return TRUE  unless you set the focus to a control 
} 
 
void CMultiThread2Dlg::OnSysCommand(UINT nID, LPARAM lParam) 
{ 
	if ((nID & 0xFFF0) == IDM_ABOUTBOX) 
	{ 
		CAboutDlg dlgAbout; 
		dlgAbout.DoModal(); 
	} 
	else 
	{ 
		CDialog::OnSysCommand(nID, lParam); 
	} 
} 
 
// If you add a minimize button to your dialog, you will need the code below 
//  to draw the icon.  For MFC applications using the document/view model, 
//  this is automatically done for you by the framework. 
 
void CMultiThread2Dlg::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(); 
	} 
} 
 
// The system calls this to obtain the cursor to display while the user drags 
//  the minimized window. 
HCURSOR CMultiThread2Dlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
//双击IDC_START按钮，完成该按钮的消息函数 
void CMultiThread2Dlg::OnStart()  
{ 
	// TODO: Add your control notification handler code here 
	UpdateData(TRUE); 
	int integer=m_nCount; 
	hThread=CreateThread( 
					NULL, 
					0, 
					(LPTHREAD_START_ROUTINE)ThreadFunc, 
					(VOID*)integer, 
					0, 
					&ThreadID 
					); 
	GetDlgItem(IDC_START)->EnableWindow(FALSE); 
	/************************************************************************/ 
	/* WaitForSingleObject函数，其函数原型为： 
 DWORD WaitForSingleObject(HANDLE hHandle,DWORD dwMilliseconds); 
hHandle为要监视的对象（一般为同步对象，也可以是线程）的句柄；  
dwMilliseconds为hHandle对象所设置的超时值，单位为毫秒；  
 　当在某一线程中调用该函数时，线程暂时挂起，系统监视hHandle所指向的对象的状态。 
 如果在挂起的dwMilliseconds毫秒内，线程所等待的对象变为有信号状态，则该函数立即返回； 
 如果超时时间已经到达dwMilliseconds毫秒，但hHandle所指向的对象还没有变成有信号状态， 
 函数照样返回。参数dwMilliseconds有两个具有特殊意义的值：0和INFINITE。 
 若为0，则该函数立即返回；若为INFINITE，则线程一直被挂起， 
 直到hHandle所指向的对象变为有信号状态时为止。 
　　本例程调用该函数的作用是按下IDC_START按钮后，一直等到线程返回， 
再恢复IDC_START按钮正常状态。编译运行该例程并细心体会。 
                                                                 */ 
	/************************************************************************/ 
	WaitForSingleObject(hThread,INFINITE); 
	GetDlgItem(IDC_START)->EnableWindow(TRUE); 
 
}