C++闹钟程序(API).docx

#include #include #include Clock.h#include Resource.h#define SQUARESIZE 20#define ID_TIMER_CLOCK 1CMyApp myApp;/ CMyApp member functionsBOOL CMyApp:InitInstance () SetRegistryKey (_T (Programming Windows with MFC); m_pMainWnd = new CMainWindow; if (!(CMainWindow*) m_pMainWnd)-RestoreWindowState () m_pMainWnd-ShowWindow (m_nCmdShow); m_pMainWnd-UpdateWindow (); return TRUE;/ CMainWindow message map and member functionsBEGIN_MESSAGE_MAP (CMainWindow, CFrameWnd) ON_WM_CREATE () ON_WM_PAINT () ON_WM_TIMER () ON_WM_GETMINMAXINFO () ON_WM_NCHITTEST () ON_WM_SYSCOMMAND () ON_WM_CONTEXTMENU () ON_WM_ENDSESSION () ON_WM_CLOSE ()END_MESSAGE_MAP ()CMainWindow:CMainWindow () m_bAutoMenuEnable = FALSE; CTime time = CTime:GetCurrentTime (); m_nPrevSecond = time.GetSecond (); m_nPrevMinute = time.GetMinute (); m_nPrevHour = time.GetHour () % 12; CString strWndClass = AfxRegisterWndClass ( CS_HREDRAW | CS_VREDRAW, myApp.LoadStandardCursor (IDC_ARROW), (HBRUSH) (COLOR_3DFACE + 1), myApp.LoadIcon (IDI_APPICON) ); Create (strWndClass, _T (Clock);BOOL CMainWindow:PreCreateWindow (CREATESTRUCT& cs) if (!CFrameWnd:PreCreateWindow (cs) return FALSE; cs.dwExStyle &= WS_EX_CLIENTEDGE; return TRUE;int CMainWindow:OnCreate (LPCREATESTRUCT lpcs) if (CFrameWnd:OnCreate (lpcs) = -1) return -1;/ Set a timer to fire at 1-second intervals./ if (!SetTimer (ID_TIMER_CLOCK, 1000, NULL) MessageBox (_T (SetTimer failed), _T (Error), MB_ICONSTOP | MB_OK); return -1; / Customize the system menu./ CMenu* pMenu = GetSystemMenu (FALSE); pMenu-AppendMenu (MF_SEPARATOR); pMenu-AppendMenu (MF_STRING, IDM_SYSMENU_FULL_WINDOW, _T (Remove &Title); pMenu-AppendMenu (MF_STRING, IDM_SYSMENU_STAY_ON_TOP, _T (Stay on To&p); return 0;void CMainWindow:OnClose () SaveWindowState (); KillTimer (ID_TIMER_CLOCK); CFrameWnd:OnClose ();void CMainWindow:OnEndSession (BOOL bEnding) if (bEnding) SaveWindowState (); CFrameWnd:OnEndSession (bEnding);void CMainWindow:OnGetMinMaxInfo (MINMAXINFO* pMMI) pMMI-ptMinTrackSize.x = 120; pMMI-ptMinTrackSize.y = 120;UINT CMainWindow:OnNcHitTest (CPoint point) UINT nHitTest = CFrameWnd:OnNcHitTest (point); if (nHitTest = HTCLIENT) & (:GetAsyncKeyState (MK_LBUTTON) TrackPopupMenu (TPM_LEFTALIGN | TPM_LEFTBUTTON | TPM_RIGHTBUTTON | TPM_RETURNCMD, point.x, point.y, this); if (nID 0) SendMessage (WM_SYSCOMMAND, nID, 0); return; CFrameWnd:OnContextMenu (pWnd, point);void CMainWindow:OnTimer (UINT nTimerID)/ Do nothing if the window is minimized./ if (IsIconic () return;/ Get the current time and do nothing if it hasnt changed./ CTime time = CTime:GetCurrentTime (); int nSecond = time.GetSecond (); int nMinute = time.GetMinute (); int nHour = time.GetHour () % 12; if (nSecond = m_nPrevSecond) & (nMinute = m_nPrevMinute) & (nHour = m_nPrevHour) return;/ Center the origin and switch to the MM_ISOTROPIC mapping mode./ CRect rect; GetClientRect (&rect); CClientDC dc (this); dc.SetMapMode (MM_ISOTROPIC); dc.SetWindowExt (1000, 1000); dc.SetViewportExt (rect.Width (), -rect.Height (); dc.SetViewportOrg (rect.Width () / 2, rect.Height () / 2);/ If minutes have changed, erase the hour and minute hands./ COLORREF clrColor = :GetSysColor (COLOR_3DFACE); if (nMinute != m_nPrevMinute) DrawHand (&dc, 200, 4, (m_nPrevHour * 30) + (m_nPrevMinute / 2), clrColor); DrawHand (&dc, 400, 8, m_nPrevMinute * 6, clrColor); m_nPrevMinute = nMinute; m_nPrevHour = nHour; / If seconds have changed, erase the second hand and redraw all hands./ if (nSecond != m_nPrevSecond) DrawSecondHand (&dc, 400, 8, m_nPrevSecond * 6, clrColor); DrawSecondHand (&dc, 400, 8, nSecond * 6, RGB (0, 0, 0); DrawHand (&dc, 200, 4, (nHour * 30) + (nMinute / 2), RGB (0, 0, 0); DrawHand (&dc, 400, 8, nMinute * 6, RGB (0, 0, 0); m_nPrevSecond = nSecond; void CMainWindow:OnPaint () CRect rect; GetClientRect (&rect); CPaintDC dc (this); dc.SetMapMode (MM_ISOTROPIC); dc.SetWindowExt (1000, 1000); dc.SetViewportExt (rect.Width (), -rect.Height (); dc.SetViewportOrg (rect.Width () / 2, rect.Height () / 2); DrawClockFace (&dc); DrawHand (&dc, 200, 4, (m_nPrevHour * 30) + (m_nPrevMinute / 2), RGB (0, 0, 0); DrawHand (&dc, 400, 8, m_nPrevMinute * 6, RGB (0, 0, 0); DrawSecondHand (&dc, 400, 8, m_nPrevSecond * 6, RGB (0, 0, 0);void CMainWindow:DrawClockFace (CDC* pDC) static CPoint point12 = CPoint ( 0, 450), / 12 oclock CPoint ( 225, 390), / 1 oclock CPoint ( 390, 225), / 2 oclock CPoint ( 450, 0), / 3 oclock CPoint ( 390, -225), / 4 oclock CPoint ( 225, -390), / 5 oclock CPoint ( 0, -450), / 6 oclock CPoint (-225, -390), / 7 oclock CPoint (-390, -225), / 8 oclock CPoint (-450, 0), / 9 oclock CPoint (-390, 225), / 10 oclock CPoint (-225, 390), / 11 oclock ; pDC-SelectStockObject (NULL_BRUSH); for (int i=0; iRectangle (pointi.x - SQUARESIZE, pointi.y + SQUARESIZE, pointi.x + SQUARESIZE, pointi.y - SQUARESIZE);void CMainWindow:DrawHand (CDC* pDC, int nLength, int nScale, int nDegrees, COLORREF clrColor) CPoint point4; double nRadians = (double) nDegrees * 0.017453292; point0.x = (int) (nLength * sin (nRadians); point0.y = (int) (nLength * cos (nRadians); point2.x = -point0.x / nScale; point2.y = -point0.y / nScale; point1.x = -point2.y; point1.y = point2.x; point3.x = -point1.x; point3.y = -point1.y; CPen pen (PS_SOLID, 0, clrColor); CPen* pOldPen = pDC-SelectObject (&pen); pDC-MoveTo (point0); pDC-LineTo (point1); pDC-LineTo (point2); pDC-LineTo (point3); pDC-LineTo (point0); pDC-SelectObject (pOldPen);void CMainWindow:DrawSecondHand (CDC* pDC, int nLength, int nScale, int nDegrees, COLORREF clrColor) CPoint point2; double nRadians = (double) nDegrees * 0.017453292; point0.x = (int) (nLength * sin (nRadians); point0.y = (int) (nLength * cos (nRadians); point1.x = -point0.x / nScale; point1.y = -point0.y / nScale; CPen pen (PS_SOLID, 0, clrColor); CPen* pOldPen = pDC-SelectObject (&pen); pDC-MoveTo (point0); pDC-LineTo (point1); pDC-SelectObject (pOldPen);void CMainWindow:SetTitleBarState () CMenu* pMenu = GetSystemMenu (FALSE); if (m_bFullWindow ) ModifyStyle (WS_CAPTION, 0); pMenu-ModifyMenu (IDM_SYSMENU_FULL_WINDOW, MF_STRING, IDM_SYSMENU_FULL_WINDOW, _T (Restore &Title); else ModifyStyle (0, WS_CAPTION); pMenu-ModifyMenu (IDM_SYSMENU_FULL_WINDOW, MF_STRING, IDM_SYSMENU_FULL_WINDOW, _T (Remove &Title); SetWindowPos (NULL, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_DRAWFRAME);void CMainWindow:SetTopMostState () CMenu* pMenu = GetSystemMenu (FALSE); if (m_bStayOnTop) SetWindowPos (&wndTopMost, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); pMenu-CheckMenuItem (IDM_SYSMENU_STAY_ON_TOP, MF_CHECKED); else SetWindowPos (&wndNoTopMost, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); pMenu-CheckMenuItem (IDM_SYSMENU_STAY_ON_TOP, MF_UNCHECKED); BOOL CMainWindow:RestoreWindowState () CString version = _T (Version 1.0); m_bFullWindow = myApp.GetProfileInt (version, _T (FullWindow), 0); SetTitleBarState (); m_bStayOnTop = myApp.GetProfileInt (version, _T (StayOnTop), 0); SetTopMostState (); WINDOWPLACEMENT wp; wp.length = sizeof (WINDOWPLACEMENT); GetWindowPlacement (&wp); if (wp.flags = myApp.GetProfileInt (version, _T (flags), -1) != -1) & (wp.showCmd = myApp.GetProfileInt (version, _T (showCmd), -1) != -1) & (wp.rcNormalPosition.left = myApp.GetProfileInt (version, _T (x1), -1) != -1) & (wp.rcNormalPosition.top = myApp.GetProfileInt (version, _T (y1), -1) != -1) & (wp.rcNormalPosition.right = myApp.GetProfileInt (version, _T (x2), -1) != -1) & (wp.rcNormalPosition.bottom = myApp.GetProfileInt (version, _T (y2), -1) != -1) wp.rcNormalPosition.left = min (wp.rcNormalPosition.left, :GetSystemMetrics (SM_CXSCREEN) - :GetSystemMetrics (SM_CXICON); wp.rcNormalPosition.top = min (wp.rcNormalPosition.top, :GetSystemMetrics (SM_CYSCREEN) - :GetSystemMetrics (SM_CYICON); SetWindowPlacement (&wp); return TRUE; return FALSE;void CMainWindow:SaveWindowState () CString version = _T (Version 1.0); myApp.WriteProfileInt (version, _T (FullWindow), m_bFullWindow); myApp.WriteProfileInt (version, _T (StayOnTop), m_bStayOnTop); WINDOWPLACEMENT wp; wp.length = sizeof (WINDOWPLACEMENT); GetWindowPlacement (&wp); myApp.WriteProfileInt (version, _T (flags), wp.flags); myApp.WriteProfileInt (version, _T (showCmd), wp.showCmd); myApp.WriteProfileInt (version, _T (x1), wp.rcNormalPosition.left); myApp.WriteProfileInt (version, _T (y1), wp.rcNormalPosition.top); myApp.WriteProfileInt (version, _T (x2), wp.rcNormalPosition.right); myApp.WriteProfileInt (version, _T (y2), wp.rcNormalPosition.bottom);void CMainWindow:UpdateSystemMenu (CMenu* pMenu) static UINT nState25 = MFS_GRAYED, MFS_ENABLED, MFS_ENABLED, MFS_ENABLED