www.pudn.com > MultiThread.rar > MultiThread1Dlg.cpp
// MultiThread1Dlg.cpp : implementation file
//
#include "stdafx.h"
#include "MultiThread1.h"
#include "MultiThread1Dlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
/************************************************************************/
/* 你要留意到全局变量 m_bRun 是使用 volatile 修饰符的，volatile
修饰符的作用是告诉编译器无需对该变量作任何的优化，即无需将它放到一个寄存器中，
并且该值可被外部改变。对于多线程引用的全局变量来说，volatile 是一个非常重要的修饰符 */
/************************************************************************/
//添加全局变量m_bRun ：
volatile BOOL m_bRun; // 代表线程是否正在运行
void ThreadFunc()//该线程函数没有参数，也不返回函数值。只要m_bRun为TRUE，线程一直运行
{
CTime time;
CString strTime;
m_bRun=TRUE;
while(m_bRun)
{
time=CTime::GetCurrentTime();
strTime=time.Format("%H:%M:%S"); //编辑框的ID为IDC_TIME
::SetDlgItemText(AfxGetMainWnd()->m_hWnd,IDC_TIME,strTime);
Sleep(1000);
}
}
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()
/////////////////////////////////////////////////////////////////////////////
// CMultiThread1Dlg dialog
CMultiThread1Dlg::CMultiThread1Dlg(CWnd* pParent /*=NULL*/)
: CDialog(CMultiThread1Dlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CMultiThread1Dlg)
// NOTE: the ClassWizard will add member initialization here
//}}AFX_DATA_INIT
// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CMultiThread1Dlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CMultiThread1Dlg)
// NOTE: the ClassWizard will add DDX and DDV calls here
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CMultiThread1Dlg, CDialog)
//{{AFX_MSG_MAP(CMultiThread1Dlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDC_START, OnStart)
ON_BN_CLICKED(IDC_STOP, OnStop)
ON_EN_CHANGE(IDC_TIME, OnChangeTime)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CMultiThread1Dlg message handlers
BOOL CMultiThread1Dlg::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 CMultiThread1Dlg::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 CMultiThread1Dlg::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 CMultiThread1Dlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
/************************************************************************/
/* Win32 API编写的多线程。 */
/************************************************************************/
//双击IDC_START按钮，完成该按钮的消息函数：
void CMultiThread1Dlg::OnStart()
{
// TODO: Add your control notification handler code here
//线程的句柄
hThread=CreateThread(
NULL,
0,
(LPTHREAD_START_ROUTINE)ThreadFunc,//函数地址
NULL,
0,
&ThreadID ////线程的id
);//两个按钮的ID分别是IDC_START，IDC_STOP
GetDlgItem(IDC_START)->EnableWindow(FALSE);
GetDlgItem(IDC_STOP)->EnableWindow(TRUE);
}
//双击IDC_STOP按钮，完成该按钮的消息函数：
void CMultiThread1Dlg::OnStop()
{
// TODO: Add your control notification handler code here
m_bRun=FALSE;
GetDlgItem(IDC_START)->EnableWindow(TRUE);
GetDlgItem(IDC_STOP)->EnableWindow(FALSE);
}
//
void CMultiThread1Dlg::OnChangeTime()
{
// TODO: If this is a RICHEDIT control, the control will not
// send this notification unless you override the CDialog::OnInitDialog()
// function and call CRichEditCtrl().SetEventMask()
// with the ENM_CHANGE flag ORed into the mask.
// TODO: Add your control notification handler code here
}