timertestdlg.cpp

这是书上的代码

// TimerTestDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TimerTest.h"
#include "TimerTestDlg.h"
#include "HelpDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CTimerTestDlg dialog

CTimerTestDlg::CTimerTestDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTimerTestDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTimerTestDlg)
	m_ComputerTimerValue = 0;
	m_Counter = 0;
	m_TimerResolution = 0.0;
	m_TimerValue = 50;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	bSysTimerStart=FALSE;
}

void CTimerTestDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTimerTestDlg)
	DDX_Text(pDX, IDC_TIME, m_ComputerTimerValue);
	DDX_Text(pDX, IDC_COUNTER, m_Counter);
	DDX_Text(pDX, IDC_TIMERRESOLUTION, m_TimerResolution);
	DDX_Text(pDX, IDC_TIMERVALUE, m_TimerValue);
	DDX_Control(pDX, IDC_HIGHQUALITYTIMERCTRL, m_TimerControl);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTimerTestDlg, CDialog)
	//{{AFX_MSG_MAP(CTimerTestDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_START_TIMER, OnStartTimer)
	ON_BN_CLICKED(IDC_MODIFYTIMER, OnModifytimer)
	ON_BN_CLICKED(IDC_EXIT, OnExit)
	ON_BN_CLICKED(ID_STOPTIMER, OnStoptimer)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_HELPINFOR, OnHelpinfor)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTimerTestDlg message handlers

BOOL CTimerTestDlg::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
	GetDlgItem(IDC_START_TIMER)->EnableWindow(TRUE);
	GetDlgItem(ID_STOPTIMER)->EnableWindow(FALSE);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CTimerTestDlg::OnStartTimer() 
{
	GetDlgItem(IDC_START_TIMER)->EnableWindow(FALSE);
	GetDlgItem(ID_STOPTIMER)->EnableWindow(TRUE);
	m_ComputerTimerValue=0;
	m_TimerControl.SetEnable(TRUE);
	bSysTimerStart=SetTimer(1,1000,NULL);//启动系统时钟，用以时钟计时，用来计算本计算机的时钟精度！
}

BEGIN_EVENTSINK_MAP(CTimerTestDlg, CDialog)
    //{{AFX_EVENTSINK_MAP(CTimerTestDlg)
	ON_EVENT(CTimerTestDlg, IDC_HIGHQUALITYTIMERCTRL, 1 /* Timer */, OnCustomTimer, VTS_NONE)
	//}}AFX_EVENTSINK_MAP
END_EVENTSINK_MAP()

void CTimerTestDlg::OnCustomTimer() 
{
	m_Counter++;
}

void CTimerTestDlg::OnModifytimer() 
{
	UpdateData(TRUE);
	m_TimerControl.SetInterval(m_TimerValue);
	m_Counter=0;
	m_TimerResolution=0;
	m_ComputerTimerValue=0;
	UpdateData(FALSE);
}

void CTimerTestDlg::OnExit() 
{
	if(bSysTimerStart)
	{
		KillTimer(1);
	}
	CDialog::OnOK();
}

void CTimerTestDlg::OnStoptimer() 
{
	//计算定时精度
	GetDlgItem(IDC_START_TIMER)->EnableWindow(TRUE);
	GetDlgItem(ID_STOPTIMER)->EnableWindow(FALSE);
	m_TimerResolution=m_ComputerTimerValue*1000000.0/m_Counter;
	UpdateData(FALSE);
	m_TimerControl.SetEnable(FALSE);
}

//VC默认时钟
void CTimerTestDlg::OnTimer(UINT nIDEvent) 
{
	m_ComputerTimerValue++;
}

void CTimerTestDlg::OnHelpinfor() 
{
	CHelpDlg HelpDlg;
	HelpDlg.DoModal();
}