指针时钟代码 vc

/*-------------------------------------- CLOCK.C -- Analog Clock Program (c) Charles Petzold, 1998 --------------------------------------*/ #include <windows.h> #include <math.h> #include <stdlib.h> #define ID_TIMER 1 #define TWOPI (2 * 3.14159) LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName[] = TEXT ("Clock") ; HWND hwnd; MSG msg; WNDCLASS wndclass ; wndclass.style = CS_HREDRAW | CS_VREDRAW ; wndclass.lpfnWndProc = WndProc ; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = 0 ; wndclass.hInstance = hInstance ; wndclass.hIcon = NULL ; wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ; wndclass.lpszMenuName = NULL ; wndclass.lpszClassName = szAppName ; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("Program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow (szAppName, TEXT ("33Clock"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL) ; ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } return msg.wParam ; } void SetIsotropic (HDC hdc, int cxClient, int cyClient) { SetMapMode (hdc, MM_ISOTROPIC) ; SetWindowExtEx (hdc, 1000, 1000, NULL) ; SetViewportExtEx (hdc, cxClient / 2, -cyClient / 2, NULL) ; SetViewportOrgEx (hdc, cxClient / 2, cyClient / 2, NULL) ; } void RotatePoint (POINT pt[], int iNum, int iAngle) { int i ; POINT ptTemp ; for (i = 0 ; i < iNum ; i++) { ptTemp.x = (int) (pt[i].x * cos (TWOPI * iAngle / 360) + pt[i].y * sin (TWOPI * iAngle / 360)) ; ptTemp.y = (int) (pt[i].y * cos (TWOPI * iAngle / 360) - pt[i].x * sin (TWOPI * iAngle / 360)) ; pt[i] = ptTemp ; } } void DrawClock (HDC hdc) { int iAngle ; POINT pt[3] ; HFONT hf; HBRUSH hb; char lpstr[]="123691245781011"; for (iAngle = 0 ; iAngle < 360 ; iAngle += 6) { pt[0].x = 0 ; pt[0].y = 900 ; RotatePoint (pt, 1, iAngle) ; pt[2].x = pt[2].y = iAngle % 5 ? 33 : 150 ; pt[0].x -= pt[2].x / 2 ; pt[0].y -= pt[2].y / 2 ; pt[1].x = pt[0].x + pt[2].x ; pt[1].y = pt[0].y + pt[2].y ; hb=CreateSolidBrush(0xffbb00); SelectObject (hdc, hb) ; hf=CreateFont(100,0,0,0,400,0,0,0,0,0,0,0,0,0); SelectObject(hdc,hf); SetBkColor(hdc,0xffbb00); SetTextColor(hdc,RGB(255,123,0)); TextOut(hdc, -55, 950,&lpstr[0],2); TextOut(hdc, 880, 50,&lpstr[2],1); TextOut(hdc, -30, -850,&lpstr[3],1); TextOut(hdc, -920, 50,&lpstr[4],1); TextOut(hdc, 420, 820,&lpstr[5],1); TextOut(hdc, 750, 500,&lpstr[6],1); TextOut(hdc, 750, -400,&lpstr[7],1); TextOut(hdc, 420, -730,&lpstr[8],1); TextOut(hdc, -470, -730,&lpstr[9],1); TextOut(hdc, -800, -400,&lpstr[10],1); TextOut(hdc, -830, 500,&lpstr[11],2); TextOut(hdc, -500, 820,&lpstr[13],2); Ellipse (hdc, pt[0].x, pt[0].y, pt[1].x, pt[1].y) ; } } void DrawHands (HDC hdc, SYSTEMTIME * pst, BOOL fChange) { static POINT pt[3][5] = { 0, -150, 100, 0, 0, 600, -100, 0, 0, -150, 0, -200, 50, 0, 0, 800, -50, 0, 0, -200, 0, 0, 0, 0, 0, 0, 0, 0, 0, 800 } ; int i, iAngle[3] ; POINT ptTemp[3][5] ; HBRUSH hb; HPEN hp; iAngle[0] = (pst->wHour * 30) % 360 + pst->wMinute / 2 ; iAngle[1] = pst->wMinute * 6 ; iAngle[2] = pst->wSecond * 6 ; memcpy (ptTemp, pt, sizeof (pt)) ; for (i = fChange ? 0 : 2 ; i < 3 ; i++) { RotatePoint (ptTemp[i], 5, iAngle[i]) ; if (i==0) { hb=CreateSolidBrush(RGB(255,0,0)); hp=CreatePen(PS_SOLID,1,RGB(0,255,0)); } else if (i==1) { hb=CreateSolidBrush(RGB(0,255,0)); hp=CreatePen(PS_SOLID,1,RGB(0,0,255)); } else { hb=CreateSolidBrush(RGB(0,0,255)); hp=CreatePen(PS_SOLID,1,RGB(255,0,0)); } SelectObject(hdc,hb); SelectObject(hdc,hp); Polygon (hdc, ptTemp[i], 5) ; SelectObject (hdc, GetStockObject (BLACK_BRUSH)) ; DeleteObject(hb); } } LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static int cxClient, cyClient ; static SYSTEMTIME stPrevious ; BOOL fChange ; HDC hdc ; PAINTSTRUCT ps ; SYSTEMTIME st ; HFONT hf; char b[]=" 年月日"; TCHAR a[4],c[2],e[2]; char m[]=":"; char k[]=" "; char z[]="0"; switch (message) { case WM_CREATE : SetTimer (hwnd, ID_TIMER, 1000, NULL) ; GetLocalTime (&st) ; stPrevious = st ; return 0 ; case WM_SIZE : cxClient = LOWORD (lParam) ; cyClient = HIWORD (lParam) ; return 0 ; case WM_TIMER : GetLocalTime (&st) ; fChange = st.wHour != stPrevious.wHour || st.wMinute != stPrevious.wMinute ; hdc = GetDC (hwnd) ; SetIsotropic (hdc, cxClient, cyClient) ; SelectObject (hdc, GetStockObject (WHITE_PEN)); DrawHands (hdc, &stPrevious, fChange); SelectObject (hdc, GetStockObject (BLACK_PEN)); DrawHands (hdc, &st, true); ReleaseDC (hwnd, hdc) ; InvalidateRect(hwnd,NULL,1); stPrevious = st ; return 0 ; case WM_PAINT : hdc = BeginPaint (hwnd, &ps) ; GetLocalTime(&st); hf=CreateFont(30,0,0,0,700,0,0,0,0,0,0,0,0,0); SelectObject(hdc,hf); SetTextColor(hdc,RGB(255,0,0)); itoa(st.wYear,a,10); TextOut(hdc,280,80,a,sizeof(a)); TextOut(hdc,340,80,&b[1],2); itoa(st.wMonth,c,10); TextOut(hdc,370,80,c,sizeof(c)); TextOut(hdc,400,80,&b[3],2); itoa(st.wDay,e,10); TextOut(hdc,430,80,e,sizeof(e)); TextOut(hdc,460,80,&b[5],2); itoa(st.wHour,c,10); if(st.wHour<10) { TextOut(hdc,cxClient/3*1.25,cyClient/3*2.4,z,1); TextOut(hdc,cxClient/3*1.3,400,c,1); TextOut(hdc,cxClient/2-30,400,k,1); } else { TextOut(hdc,cxClient/3*1.25,cyClient/3*2.4,c,2); } TextOut(hdc,cxClient/2.15,cyClient/3*2.4,m,1); itoa(st.wMinute,c,10); if(st.wMinute<10) { TextOut(hdc,cxClient/2.06,cyClient/3*2.4,z,1); TextOut(hdc,cxClient/2+2,cyClient/3*2.4,c,1); TextOut(hdc,cxClient/2+17,cyClient/3*2.4,k,1); } else { TextOut(hdc,cxClient/3,cyClient/3*2.4,c,2); } TextOut(hdc,cxClient/2+20,cyClient/3*2.4,m,1); itoa(st.wSecond,c,10); if (st.wSecond<10) { TextOut(hdc,cxClient/1.84,cyClient/3*2.4,z,1); TextOut(hdc,cxClient/1.777,cyClient/3*2.4,c,1); TextOut(hdc,cxClient/2+60,cyClient/3*2.4,k,1); } else { TextOut(hdc,cxClient/1.83,cyClient/3*2.4,c,2); } SetIsotropic (hdc, cxClient, cyClient) ; DrawClock (hdc) ; DrawHands (hdc, &stPrevious, TRUE) ; EndPaint (hwnd, &ps) ; return 0 ; case WM_DESTROY : KillTimer (hwnd, ID_TIMER) ; PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ; }