湖 南 农 业 大 学 VC++程序设计课程设计报告
时钟
学生姓名：XXX
学号：XXXXXXXXXXXX
QQ：XXXXXXXXX
班级：X班
年级专业：2010级计算机
指导老师及职称：X老师 高级工程师 学院：XXXXXXXXXXXXXXX
湖南·长沙
提交日期：20xx年6月
时钟
学生：XX
指导老师：XXX
(XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX)
1.摘要:利用MFC设计制作一个能联网调时时钟，当按下F1键时，能打开或关闭帮助，单击左键是，能拖动窗口，双击左键时，能联网校时，滚动中轴时，能调整时间，单击右键，能随机变换背景颜色。
2.关键词：MFC；Clock；C++……
3.前言：
1.我们学习MFC，除了可以掌握一种Windows应用程序设计的基本方法之外，还可以使他们进一步全面、深刻地理解向对象程序设计的思想。而且MFC所蕴含的程序设计思想、代码实现技巧、则是其他开发工具所不能及的。
2.我们通过制作这个时钟，可以加深对MFC的设计思想的理解。也可以加强对C++的思想的理解。
4.正文：
4.1：窗口的创建于注册
{
public:
// Dialog Data
// ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAboutDlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //{{AFX_DATA(CAboutDlg) enum { IDD = IDD_ABOUTBOX }; //}}AFX_DATA CAboutDlg(); class CAboutDlg : public CDialog
//}}AFX_VIRTUAL
// Implementation
protected:
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg) // No message handlers CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAboutDlg) //}}AFX_DATA_MAP //{{AFX_DATA_INIT(CAboutDlg) //}}AFX_DATA_INIT //{{AFX_MSG(CAboutDlg) //}}AFX_MSG DECLARE_MESSAGE_MAP() //}}AFX_MSG_MAP
END_MESSAGE_MAP()
///////////////////////////////////////////////////////////////////////////// // CAlarmClockDlg dialog
CAlarmClockDlg::CAlarmClockDlg(CWnd* pParent /*=NULL*/)
{
}
void CAlarmClockDlg::DoDataExchange(CDataExchange* pDX) {
}
BEGIN_MESSAGE_MAP(CAlarmClockDlg, CDialog)
//{{AFX_MSG_MAP(CAlarmClockDlg) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_LBUTTONDOWN() ON_WM_TIMER() ON_WM_ERASEBKGND() ON_WM_LBUTTONDBLCLK() ON_WM_RBUTTONDOWN() CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CAlarmClockDlg) // NOTE: the ClassWizard will add DDX and DDV calls here //{{AFX_DATA_INIT(CAlarmClockDlg) // NOTE: the ClassWizard will add member initialization here : CDialog(CAlarmClockDlg::IDD, pParent) //}}AFX_DATA_INIT // Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); m_hThread = NULL; m_bkColor = RGB(110, 200, 255); m_bHelp = TRUE; //}}AFX_DATA_MAP
ON_WM_MOUSEWHEEL() //}}AFX_MSG_MAP
END_MESSAGE_MAP()
///////////////////////////////////////////////////////////////////////////// // CAlarmClockDlg message handlers
void CAlarmClockDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
}
// The system calls this to obtain the cursor to display while the user drags // the minimized window.
HCURSOR CAlarmClockDlg::OnQueryDragIcon()
{
}
BOOL CAlarmClockDlg::OnInitDialog()
{
CDialog::OnInitDialog(); return (HCURSOR)m_hIcon; if ((nID & 0xFFF0) == IDM_ABOUTBOX) { } else { } CDialog::OnSysCommand(nID, lParam); CAboutDlg dlgAbout; dlgAbout.DoModal();
// 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); SetIcon(m_hIcon, FALSE); // TODO: Add extra initialization here //1. 将窗口改成正方形 CRect rc; this->GetWindowRect(&rc); int iNewWH = min(rc.Width(), rc.Height()); this->MoveWindow(rc.left, rc.top, iNewWH, iNewWH); // Set big icon // Set small icon //2. 设置绘图区域
}
this->GetWindowRect(&rc); HRGN hRgn = ::CreateEllipticRgn(rc.left, rc.top, rc.right, rc.bottom); this->SetWindowRgn(hRgn, TRUE); //3. 设置定时器 this->SetTimer(110, 7000, NULL); //110 = Help this->SetTimer(2359, 1000, NULL); //23:59 = move time //4. 主动触发鼠标双击消息 this->PostMessage(WM_LBUTTONDBLCLK); //5. 设置窗口标题 this->SetWindowText("Internet时钟"); return TRUE; // return TRUE unless you set the focus to a control
void CAlarmClockDlg::OnTimer(UINT nIDEvent) {
}
if (nIDEvent == 2359) { } else if (nIDEvent == 110) { } CDialog::OnTimer(nIDEvent); m_bHelp = FALSE; this->KillTimer(110); this->Invalidate();
// 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 CAlarmClockDlg::OnPaint()
{
}
BOOL CAlarmClockDlg::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default } else { } OnDraw(&dc); //CDialog::OnPaint(); // Draw the icon dc.DrawIcon(x, y, m_hIcon); // 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; CPaintDC dc(this); // device context for painting if (IsIconic()) { SendMessage(WM_ICONERASEBKGND, (WPARAM)dc.GetSafeHdc(), 0);
return TRUE;
// return CDialog::OnEraseBkgnd(pDC);
}
void CAlarmClockDlg::OnDraw(CDC *pDC)
{
子.
// //1. 改变当前View窗口的背景为空刷子
// ::SetClassLong(this->m_hWnd, GCL_HBRBACKGROUND, (LONG)(HBRUSH)::GetStockObject(NULL_BRUSH)); //c. 为CxxxView类增加一个成员函数void OnDrawMem(CDC &dcMem), // 并将你以前写在OnDraw()中的代码，移到OnDrawMem()中去即可. // ///////////////////////////////////////////////////////////////////////// // TODO: add draw code for native data here ///////////////////////////////////////////////////////////////////////// // //如下的做法能避免绘图闪烁, 强烈推荐使用. KouConghua. // //主要思想是将以前直接画在pDC上的图，改画到一个内存DC(如dcMem)中去, //然后使用BitBlt函数，将dcMem这个内存中的图复制到当前屏幕即pDC中去. // //具体步骤如下, 其中a 和b 选择一步即可, 不可二者都做: //a. 直接在OnDraw()中增加如下语句, 以改变窗口背景为透明色: // ::SetClassLong(this->m_hWnd, GCL_HBRBACKGROUND, // (LONG)(HBRUSH)::GetStockObject(NULL_BRUSH)); //b. 在CxxxView类中增加OnEraseBkgnd()消息响应函数, // 将其中的代码改为: return TRUE; // 直接返回TRUE表示告诉系统绘图时不再绘制背景，相当于设置窗口背景为NULL刷
上
//6. 将dcMem中的图拷贝到pDC上进行显示. 关键点. pDC->BitBlt(0, 0, nWidth, nHeight, &dcMem, 0, 0, SRCCOPY); //7. 绘图完成后的清理 bmp.DeleteObject(); dcMem.DeleteDC(); CBitmap * pOldBit = dcMem.SelectObject(&bmp); //4. 先用背景色将位图清除干净，这里我用的是m_bkColor作为背景 dcMem.FillSolidRect(0, 0, nWidth, nHeight, m_bkColor); //5. 执行真正的绘图代码, 如dcMem.MoveTo(……); dcMem.LineTo(……); 等等 OnDrawMem(&dcMem); //将bmp选入到dcMem中, 只有选入了位图的dcMem才有地方绘图，画到指定的bmp位图//2. 获取当前绘图区的宽度和高度 CRect rcClient; this->GetClientRect(&rcClient); int nWidth = rcClient.Width(); int nHeight= rcClient.Height(); //3. 创建一个和pDC兼容的内存DC: dcMem CDC dcMem; dcMem.CreateCompatibleDC(pDC); //pDC换成NULL也可以，指定为显示器 //创建一个位图对象, 其宽度和高度就用当前绘图区的nWidth 和nHeight CBitmap bmp; bmp.CreateCompatibleBitmap(pDC, nWidth, nHeight);
} 4.2：中心时间显示
{
//3. 取得时, 分, 秒 CString sTime; SYSTEMTIME tm; ::GetLocalTime(&tm); //取得本地时间 //1. 获取设备资源 CPen *pOldPen = pDC->GetCurrentPen(); CPen pen(PS_SOLID, 1, RGB(0,0,0)); pDC->SelectObject(&pen); CBrush *pOldBrush = pDC->GetCurrentBrush(); CBrush brush; //使圆背景透明，不至于遮挡住圆心处显示的时间文本 CRect rc; this->GetClientRect(&rc); //获取客户区矩形 void CAlarmClockDlg::OnDrawMem(CDC *pDC) brush.CreateStockObject(NULL_BRUSH); pDC->SelectObject(&brush); pDC->SetBkMode(TRANSPARENT); //设置文本背景为透明 //设置文本颜色 pDC->SetTextColor(RGB(128, 0, 128)); //2. 获取圆心和半径 POINT ptO; //圆心 int iR = min(rc.right - rc.left, rc.bottom-rc.top) / 2; iR = iR - 10; //半径 ptO.x = (rc.right + rc.left) / 2; ptO.y = (rc.bottom + rc.top) / 2;
float fSecond = tm.wSecond; float fMinute = tm.wMinute + fSecond / 60.0f; float fHour = tm.wHour % 12 + fMinute / 60.0f; //在圆心附近显示时间
// CRect rtO(ptO.x - 40, ptO.y + 2, ptO.x + 40, ptO.y + 22);
CRect rtO(ptO.x - iR, ptO.y + 2, ptO.x + iR, ptO.y + iR); sTime.Format("%.2d:%.2d:%.2d", tm.wHour, tm.wMinute, tm.wSecond); pDC->DrawText(sTime, &rtO, DT_CENTER);
4.3：画时钟
算法：时钟的秒刻度分为60个刻度，每个刻度是6°
四个象限的刻度尺的算法如下：
//第一象限
for(int i=0;i<16;i++)
{
POINT pt0; pt0.x = ptOrigin.x + iR * sin( PI/180 * 6*i) *
0.95f;
pt0.y = ptOrigin.y - iR * cos( PI/180 * 6*i) *
0.95f;
}
//第四象限
for(i=1;i<16;i++)
{
} POINT pt0; pt0.x = ptOrigin.x + iR * cos( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y + iR * sin( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0)); SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0));
//第三象限
for(i=1;i<16;i++) {
}
//第二象限
for(i=1;i<15;i++) {
}
根据：
sin（PI/2＋α）＝cosα cos（π/2＋α）＝－sinα 第四象限可以写成
for(int i=16;i<32;i++) {
}
根据：
sin（π＋α）＝－sinα cos（π＋α）＝－cosα 第三象限可以写成： POINT pt0; pt0.x = ptOrigin.x + iR * sin( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y - iR * cos( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0)); POINT pt0; pt0.x = ptOrigin.x - iR * cos( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y - iR * sin( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0)); POINT pt0; pt0.x = ptOrigin.x - iR * sin( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y + iR * cos( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0));
for(int i=32;i<48;i++)
{
}
根据：
sin（3π/2＋α）＝－cosα
cos（3π/2＋α）＝sinα
第二象限可以写成
for(int i=48;i<60;i++)
{
}
最后统一成：
for(int i=0;i<60;i++)
{
}
所以有程序代码如下：
// pDC->Ellipse(ptO.x - iR, ptO.y - iR, ptO.x + iR, ptO.y + iR);
//4.1 画秒刻度 POINT pt0; pt0.x = ptOrigin.x + iR * sin( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y - iR * cos( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0)); POINT pt0; pt0.x = ptOrigin.x + iR * sin( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y - iR * cos( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0)); POINT pt0; pt0.x = ptOrigin.x + iR * sin( PI/180 * 6*i) * 0.95f; pt0.y = ptOrigin.y - iR * cos( PI/180 * 6*i) * 0.95f; SetPixel(hdc,pt0.x,pt0.y,RGB(255,0,0));
pen.DeleteObject(); pen.CreatePen(PS_SOLID, 1, RGB(0,0,0)); pDC->SelectObject(&pen); for (int i = 0; i < 60; i++) { } //4.2 画小时刻度 pen.DeleteObject(); pen.CreatePen(PS_SOLID, 2, RGB(0,0,0)); pDC->SelectObject(&pen); for (i = 0; i < 60; i = i + 5) { POINT ptA, ptB; ptA.x = ptO.x + iR * sin( PI/30 * i) * 0.95f; ptA.y = ptO.y - iR * cos( PI/30 * i) * 0.95f; ptB.x = ptO.x + iR * sin( PI/30 * i) * 1.00f; ptB.y = ptO.y - iR * cos( PI/30 * i) * 1.00f; pDC->MoveTo(ptA.x, ptA.y); pDC->LineTo(ptB.x, ptB.y); //写出小时数字 int j = i/5; POINT ptA, ptB; ptA.x = ptO.x + iR * sin( PI/30 * i) * 0.98f; ptA.y = ptO.y - iR * cos( PI/30 * i) * 0.98f; ptB.x = ptO.x + iR * sin( PI/30 * i) * 1.00f; ptB.y = ptO.y - iR * cos( PI/30 * i) * 1.00f; pDC->MoveTo(ptA.x, ptA.y); pDC->LineTo(ptB.x, ptB.y);
if (j == 0) j = 12; CString sTime; sTime.Format("%d", j); POINT ptN; ptN.x = ptO.x + iR * sin( PI/30 * i) * 0.87f; ptN.y = ptO.y - iR * cos( PI/30 * i) * 0.87f; } CRect rtN(ptN.x - 10, ptN.y - 10, ptN.x + 10, ptN.y + 10); pDC->DrawText(sTime, &rtN, DT_CENTER | DT_VCENTER); //5. 画秒针 60s = 2*PI, 1s = PI / 30 pen.DeleteObject(); pen.CreatePen(PS_SOLID, 1, RGB(0,0,255)); pDC->SelectObject(&pen); POINT ptSecond; ptSecond.x = ptO.x + iR * sin( PI/30 * fSecond) * 0.94f; ptSecond.y = ptO.y - iR * cos( PI/30 * fSecond) * 0.94f; pDC->MoveTo(ptO.x, ptO.y); pDC->LineTo(ptSecond.x, ptSecond.y); //6. 画分针 60m = 2*PI, 1m = PI / 30 pen.DeleteObject(); pen.CreatePen(PS_SOLID, 2, RGB(255,0,0)); pDC->SelectObject(&pen); POINT ptMinute; ptMinute.x = ptO.x +iR * sin( PI/30 * fMinute) * 0.84f; ptMinute.y = ptO.y - iR * cos( PI/30 * fMinute) * 0.84f; pDC->MoveTo(ptO.x, ptO.y);
pDC->LineTo(ptMinute.x, ptMinute.y); //7. 画时针 12h = 2*PI, 1h = PI / 6 pen.DeleteObject(); pen.CreatePen(PS_SOLID, 3, RGB(255,0,255)); pDC->SelectObject(&pen); POINT ptHour; ptHour.x = ptO.x + iR * sin( PI/6 * fHour) * 0.71f; ptHour.y = ptO.y - iR * cos( PI/6 * fHour) * 0.71f; pDC->MoveTo(ptO.x, ptO.y); pDC->LineTo(ptHour.x, ptHour.y);
4.4：显示帮助信息及其相关操作
//帮助信息, 显示7s后关闭 if (m_bHelp) { CString sHelp; sHelp += "按下F1键: 帮助开关\r\n"; sHelp += "单击左键: 拖动窗口\r\n"; sHelp += "双击左键: 联网校时\r\n"; sHelp += "滚动中轴: 调整时间\r\n"; sHelp += "单击右键: 随机背景\r\n"; sHelp += "按Esc 键: 退出程序\r\n"; if (int(fHour) % 12 >= 3 && (int)fHour % 12 < 9) { CRect rtHelp(ptO.x - iR, ptO.y - iR * 7 / 10, ptO.x + iR, ptO.y + iR * 3 /
10);
} else { CRect rtHelp(ptO.x - iR, ptO.y + iR / 5, ptO.x + iR, ptO.y + iR * 4 / 5); pDC->DrawText(sHelp, &rtHelp, DT_CENTER | DT_VCENTER);
}
} } pDC->DrawText(sHelp, &rtHelp, DT_CENTER | DT_VCENTER); //8. 恢复现场, 释放资源 pDC->SelectObject(pOldPen); pDC->SelectObject(pOldBrush); pen.DeleteObject(); brush.DeleteObject();
//移动无标题窗口
void CAlarmClockDlg::OnLButtonDown(UINT nFlags, CPoint point) {
}
//Internet校时
void CAlarmClockDlg::OnLButtonDblClk(UINT nFlags, CPoint point) {
}
//随机背景
void CAlarmClockDlg::OnRButtonDown(UINT nFlags, CPoint point) { if (m_hThread) ::TerminateThread(m_hThread, -1); m_hThread = ::CreateThread(NULL, 0, SetInternetTimeProc, this, 0, NULL); CDialog::OnLButtonDblClk(nFlags, point); CDialog::OnLButtonDown(nFlags, point); this->SendMessage(WM_NCLBUTTONDOWN, HTCAPTION, 0);
}
// TODO: Add your message handler code here and/or call default ::srand(::GetTickCount()); m_bkColor = RGB(rand() * 100 % 255, rand() * 100 % 255, rand() * 100 % 255); this->Invalidate(); CDialog::OnRButtonDown(nFlags, point);
//调整时间
BOOL CAlarmClockDlg::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt) {
}
//键盘控制
void CAlarmClockDlg::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) { return CDialog::OnMouseWheel(nFlags, zDelta, pt); this->Invalidate(); tm.wHour = now.GetHour(); tm.wMinute = now.GetMinute(); tm.wSecond = 0;//now.GetSecond(); ::SetLocalTime(&tm); now += COleDateTimeSpan(0, 0, zDelta > 0 ? -1 : 1, 0); // 1 Minute exactly // TODO: Add your message handler code here and/or call default SYSTEMTIME tm; ::GetLocalTime(&tm); COleDateTime now = COleDateTime::GetCurrentTime();
// TODO: Add your message handler code here and/or call default switch (nChar) { case VK_ESCAPE: CDialog::OnOK(); break; case VK_HOME: this->SendMessage(WM_LBUTTONDBLCLK); break; case VK_END: SYSTEMTIME tm; ::GetLocalTime(&tm); tm.wHour = 0; tm.wMinute = 0; tm.wSecond = 0; ::SetLocalTime(&tm); this->Invalidate(); break; case VK_DOWN: case VK_RIGHT: case VK_NEXT: OnMouseWheel(0, -1, 0); break; case VK_UP: case VK_LEFT: case VK_PRIOR: } OnMouseWheel(0, 1, 0); break; //CDialog::OnKeyDown(nChar, nRepCnt, nFlags);
}
//帮助信息
void CAlarmClockDlg::WinHelp(DWORD dwData, UINT nCmd) {
}
//将当前系统时间设置为从Internet取得的标准时间
DWORD CAlarmClockDlg::SetInternetTimeProc(LPVOID lpParameter) {
//设置接收超时时间为2s //创建TCP套接字 SOCKET sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); if (sock == INVALID_SOCKET) { } pDlg->m_hThread = NULL; return FALSE; CAlarmClockDlg *pDlg = (CAlarmClockDlg *)lpParameter; DWORD bRet = FALSE; // TODO: Add your specialized code here and/or call the base class m_bHelp = !m_bHelp; if (m_bHelp) this->SetTimer(110, 7000, NULL); else this->KillTimer(110); this->Invalidate(); //CDialog::WinHelp(dwData, nCmd);
int nTimeout = 2000; ::setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (char *)&nTimeout, sizeof(nTimeout)); //时间服务器IP地址 char *szServer[] = { }; "128.138.140.44", "132.163.4.101", "132.163.4.102", "132.163.4.103", "192.43.244.18", "131.107.1.10", "66.243.43.21", "216.200.93.8", "208.184.49.9", "207.126.98.204", "207.200.81.113", "205.188.185.33", "216.218.254.202", "209.81.9.7", "time.stdtime.gov.tw","time-a.nist.gov","", "", "5time.nist.gov", "", "tick.mit.edu", "210.72.145.44", "129.6.15.29", "129.6.15.28", "", //尝试连接不同的服务器 BOOL bConnect = FALSE; for (int i = 0; i < dim(szServer); i++) { SOCKADDR_IN sa; sa.sin_family = AF_INET ; sa.sin_port = htons(IPPORT_TIMESERVER); sa.sin_addr.S_un.S_addr = inet_addr(szServer[i]) ; //sa.sin_addr.S_un.S_addr = inet_addr ("132.163.4.101") ; } if (0 == connect(sock, (SOCKADDR *)&sa, sizeof(sa))) { } bConnect = TRUE; TRACE("\r\nOK: %s\r\n\r\n", szServer[i]); break;
间
if (!bConnect) { } closesocket(sock) ; pDlg->m_hThread = NULL; return FALSE; while (TRUE) { ::Sleep(1); ULONG ulTime = 0; int iBytesRecv = recv(sock, (char *)&ulTime, sizeof(ulTime), 0); if (iBytesRecv > 0) { ulTime = ntohl(ulTime); //ulTime += 8*60*60; //加8小时,就是北京时 //ulTime = Now - 1900.1.1 00:00:00 此时的ulTime是自1900.1.1子夜到现在时间之间的秒数 !!!!!!!!!!
// 1900.1.1-->SYSTEMTIME-->FILETIME-->LARGE_INTEGER SYSTEMTIME stNew; stNew.wYear = 1900; stNew.wHour = 0; stNew.wMonth = 1; stNew.wMinute = 0; stNew.wDay = 1; stNew.wSecond = 0 ; stNew.wMilliseconds = 0;
FILETIME ftNew; SystemTimeToFileTime(&stNew, &ftNew); LARGE_INTEGER liTime = *(LARGE_INTEGER *)&ftNew; //用64位大整数表示1900.1.1
//加上从服务器获取的秒数: ulTime liTime.QuadPart += (LONGLONG)10000000 * ulTime; //1900.1.1 + ulTime
//改变系统时间 // 将当前的Internet时间转化为 20080101 和 235959 这种数字型格式 LONGLONG llNetDate = stNew.wYear * 10000 + stNew.wMonth * 100 + stNew.wDay; //LONGLONG llNetTime = stNew.wHour * 10000 + stNew.wMinute * 100 + //LARGE_INTEGER-->FILETIME-->SYSTEMTIME-->2011.6.12. ftNew = *(FILETIME *)&liTime; FileTimeToSystemTime(&ftNew, &stNew); stNew.wSecond;
} return bRet; pDlg->m_hThread = NULL; } closesocket (sock) ; sock = NULL; } if (llNetDate > 19000101) { } bRet = SetSystemTime(&stNew); break;
5.结论：通过这次的课程设计的训练，深刻体会到了自己在这方面还很不足，需要加强，就像老师说的还有很大的提升空间，同时，也感觉学好C++很有用的，编出程序的那一刻还是很高兴的，因此，这次的最大的收获就是培养出了自己对C++的兴趣。我通过这次的学习，知道了，学习C++，最重要的是自己动手的能力，光靠课堂上的知识是无法编出自己的程序的，在课后，我们一定要自己多动手，这样才有可能学好C++。
参考文献
[1] 任哲等编著《MFC Windows应用程序设计（第二版）》，出版年：20xx年9月，卷（期）：第
二版。
[2] 课堂上提供的程序代码。
致 谢
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