www.pudn.com > MultiThread.rar > MultiThread4Dlg.cpp

// MultiThread4Dlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "MultiThread4.h" 
#include "MultiThread4Dlg.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
 
 
//添加公共变量 
volatile BOOL m_bRunFlag=TRUE;// 该变量表示是否还能继续创建线程。 
 
//添加线程函数：  
DWORD WINAPI threadFunc(LPVOID threadNum) 
{ 
	while(m_bRunFlag)//只要 m_bRunFlag 变量为TRUE，线程一直运行。 
	{ 
		Sleep(3000); 
	} 
	return 0; 
} 
 
 
 
///////////////////////////////////////////////////////////////////////////// 
// CAboutDlg dialog used for App About 
 
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() 
 
///////////////////////////////////////////////////////////////////////////// 
// CMultiThread4Dlg dialog 
 
CMultiThread4Dlg::CMultiThread4Dlg(CWnd* pParent /*=NULL*/) 
	: CDialog(CMultiThread4Dlg::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CMultiThread4Dlg) 
	m_nCount = 0; 
	//}}AFX_DATA_INIT 
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 
} 
 
void CMultiThread4Dlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CMultiThread4Dlg) 
	DDX_Text(pDX, IDC_COUNT, m_nCount); 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CMultiThread4Dlg, CDialog) 
	//{{AFX_MSG_MAP(CMultiThread4Dlg) 
	ON_WM_SYSCOMMAND() 
	ON_WM_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_BN_CLICKED(IDC_TEST, OnTest) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CMultiThread4Dlg message handlers 
 
BOOL CMultiThread4Dlg::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 CMultiThread4Dlg::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 CMultiThread4Dlg::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 CMultiThread4Dlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
 
 
//双击按钮IDC_TEST，添加其响应消息函数： 
void CMultiThread4Dlg::OnTest()  
{ 
	// TODO: Add your control notification handler code here  
 //   DWORD threadID; //线程的id 
	GetDlgItem(IDC_TEST)->EnableWindow(FALSE); 
//long nCount=0; //编辑 
	while(m_bRunFlag) 
	{ 
		if(CreateThread( 
			NULL, 
			0, 
			threadFunc, 
			NULL, 
			0, 
			&threadID 
			) 
			==NULL) 
		{ 
			m_bRunFlag=FALSE; 
			break; 
		} 
		else 
		{ 
			nCount++; 
		} 
	} 
   //不断创建线程，直到再不能创建为止 
	m_nCount=nCount; 
	UpdateData(FALSE); 
	Sleep(5000); 
   //延时5秒，等待所有创建的线程结束 
	GetDlgItem(IDC_TEST)->EnableWindow(TRUE); 
    m_bRunFlag=TRUE; 
	 
}