C++编程_时钟程序

// clock2Dlg.cpp : implementation file#include "stdafx.h"#include "clock2.h"#include "clock2Dlg.h"#include "math.h"#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = __FILE__;#endif///////////////////////////////////////////////////////////////////////////// // CAboutDlg dialog used for App Aboutclass 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// Implementationprotected://{{AFX_MSG(CAboutDlg)//}}AFX_MSGDECLARE_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_MAPEND_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// CClock2Dlg dialogCClock2Dlg::CClock2Dlg(CWnd* pParent /*=NULL*/): CDialog(CClock2Dlg::IDD, pParent){//{{AFX_DATA_INIT(CClock2Dlg)// 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 CClock2Dlg::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);//{{AFX_DATA_MAP(CClock2Dlg)// NOTE: the ClassWizard will add DDX and DDV calls here//}}AFX_DATA_MAP}BEGIN_MESSAGE_MAP(CClock2Dlg, CDialog)//{{AFX_MSG_MAP(CClock2Dlg)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_WM_TIMER()//}}AFX_MSG_MAPEND_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////// CClock2Dlg message handlersBOOL CClock2Dlg::OnInitDialog(){CDialog::OnInitDialog();//定时器：SetTimer(1,1000,NULL);// 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 dialogSetIcon(m_hIcon, TRUE); // Set big iconSetIcon(m_hIcon, FALSE); // Set small icon// TODO: Add extra initialization herereturn TRUE; // return TRUE unless you set the focus to a control}void CClock2Dlg::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 CClock2Dlg::OnPaint(){if (IsIconic()){CPaintDC dc(this); // device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);// Center icon in client rectangleint 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 icondc.DrawIcon(x, y, m_hIcon);}else{CDialog::OnPaint();}//下面输入时钟程序代码：CDC *pDC=this->GetDC();CRect rc;GetClientRect(&rc);//int xStart=rc.right/2; //计算中心点 int yStart=rc.bottom/2;CTime time=CTime::GetCurrentTime(); //得到当前的时间 CString strDigits;int i,x,y;CSize size;CPen Pen(PS_SOLID,5,RGB(0,0,0));CPen *pOldPen=pDC->SelectObject(&Pen);pDC->Ellipse(5,5,rc.right-5,rc.bottom-5); //画圆盘double Radians; //定义角度pDC->SetTextColor(RGB(0,0,0)); //开始写入数字1-12for(i=1;i<=12;i++){strDigits.Format("%d",i);size=pDC->GetTextExtent(strDigits,strDigits.GetLength());Radians=(double)i*6.28/12.0;x=xStart-(size.cx/2)+(int)((double)(xStart-20)*sin(Radians));//数字水平位置y=yStart-(size.cy/2)-(int)((double)(yStart-20)*cos(Radians));//数字垂直位置pDC->TextOut(x,y,strDigits);}//开始绘制时针Radians=(double)time.GetHour()+(double)time.GetMinute()/60.00+(double)time.GetSe cond()/3600.00;Radians*=6.28/12.0;CPen HourPen(PS_SOLID,5,RGB(0,0,0)); //定义时针线宽pDC->SelectObject(HourPen);pDC->MoveTo(xStart,yStart);pDC->LineTo(xStart+(int)((double)(xStart/2)*sin(Radians)),yStart-(int)((double)(yStart/2)*cos(Radians)));//开始绘制分针Radians=(double)time.GetMinute()+(double)time.GetSecond()/60.00;Radians*=6.28/60.0;CPen MinutePen(PS_SOLID,3,RGB(0,0,0)); //定义分针线宽pDC->SelectObject(MinutePen);pDC->MoveTo(xStart,yStart);pDC->LineTo(xStart+(int)((double)(xStart*2/3)*sin(Radians)),yStart-(int)((double) (yStart*2/3)*cos(Radians)));//开始绘制秒针Radians=(double)time.GetSecond();Radians*=6.28/60.0;CPen SecondPen(PS_SOLID,1,RGB(0,0,0)); //定义秒针线宽pDC->SelectObject(SecondPen);pDC->MoveTo(xStart,yStart);pDC->LineTo(xStart+(int)((double)(xStart*4/5)*sin(Radians)),yStart-(int)((double)(yStart*4/5)*cos(Radians)));pDC->SelectObject(pOldPen);//时钟代码结束}// The system calls this to obtain the cursor to display while the user drags// the minimized window.HCURSOR CClock2Dlg::OnQueryDragIcon(){return (HCURSOR) m_hIcon;}//有关定时器：void CClock2Dlg::OnTimer(UINT nIDEvent){InvalidateRect(NULL,true);UpdateWindow();CDialog::OnTimer(nIDEvent);}。