fourdlg.cpp

一个实现计时器的小程序

// fourDlg.cpp : implementation file
//

#include "stdafx.h"
#include "four.h"
#include "fourDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CFourDlg dialog

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

void CFourDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFourDlg)
	DDX_Control(pDX, IDC_BSTOPTIMER, m_cStopTime);
	DDX_Control(pDX, IDC_BSTARTTIME, m_cStartTime);
	DDX_Text(pDX, IDC_STATICTIME, m_sTime);
	DDX_Text(pDX, IDC_STATICCOUNT, m_sCount);
	DDX_Text(pDX, IDC_EINTERVAL, m_iInterval);
	DDV_MinMaxInt(pDX, m_iInterval, 1, 1000000);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CFourDlg, CDialog)
	//{{AFX_MSG_MAP(CFourDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_TIMER()
	ON_EN_CHANGE(IDC_EINTERVAL, OnChangeEinterval)
	ON_BN_CLICKED(IDC_BSTARTTIME, OnBstarttime)
	ON_BN_CLICKED(IDC_BSTOPTIMER, OnBstoptimer)
	ON_BN_CLICKED(IDC_CEXIT, OnCexit)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFourDlg message handlers

BOOL CFourDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	m_iInterval=100;
	UpdateData(false);
	// 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
	SetTimer(ID_CLOCK_TIMER,1000,NULL);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CFourDlg::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 CFourDlg::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 CFourDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CFourDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	CTime curTime=CTime::GetCurrentTime();
	switch(nIDEvent)
	{
	case ID_CLOCK_TIMER:
	m_sTime=curTime.Format("%H:%M:%S");
	break;
	case ID_COUNT_TIMER:
		m_iCount++;
		m_sCount.Format("%d",m_iCount);
		break;
	}
if(!m_bPreventUpdate)
	UpdateData(false);
	CDialog::OnTimer(nIDEvent);
}

void CFourDlg::OnChangeEinterval() 
{
	m_bPreventUpdate=true;
	UpdateData(true);
	m_bPreventUpdate=false;
	// 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
	
}

void CFourDlg::OnBstarttime() 
{
	// TODO: Add your control notification handler code here
	m_bPreventUpdate=true;
	UpdateData(true);
	m_bPreventUpdate=false;
    if((m_iInterval<1)||(m_iInterval>100000))
		return;
	m_iCount=0;
	m_sCount.Format("%d",m_iCount);
	UpdateData(false);
	SetTimer(ID_COUNT_TIMER,m_iInterval,NULL);
	m_cStopTime.EnableWindow(true);
	m_cStartTime.EnableWindow(false);
	
}

void CFourDlg::OnBstoptimer() 
{
	// TODO: Add your control notification handler code here
	KillTimer(ID_COUNT_TIMER);
		m_cStopTime.EnableWindow(false);
	m_cStartTime.EnableWindow(true);
}

void CFourDlg::OnCexit() 
{
OnOK();	
}