用C++模擬時(shí)鐘.doc

/ 模擬時(shí)鐘.cpp : 定義應(yīng)用程序的入口點(diǎn)。/編制一個(gè)模擬時(shí)鐘，要求表面為一個(gè)粉色的源，并帶有刻度，秒針，分針，時(shí)針與運(yùn)行應(yīng)與實(shí)際接近。/本例應(yīng)設(shè)置一個(gè)1秒的計(jì)時(shí)器，處理計(jì)時(shí)器發(fā)生的消息時(shí)應(yīng)對(duì)屏幕進(jìn)行重繪，重繪時(shí)對(duì)時(shí)間進(jìn)行調(diào)整，/并根據(jù)新的時(shí)間繪制表中的時(shí)針、分針和秒針。為了保持時(shí)間，可以將時(shí)間設(shè)置為靜態(tài)變量或全局變量。/因表中的時(shí)間是動(dòng)態(tài)的，所以將繪圖的代碼應(yīng)放在響應(yīng)WM_PAINT消息。#include stdafx.h#include 模擬時(shí)鐘.h#include #include #include #define PI 3.1415926#define MAX_LOADSTRING 100typedef struct Time int hour,min,sec;TimeStructure;/ 全局變量:HINSTANCE hInst; / 當(dāng)前實(shí)例TCHAR szTitleMAX_LOADSTRING; / 標(biāo)題欄文本TCHAR szWindowClassMAX_LOADSTRING; / 主窗口類名/ 此代碼模塊中包含的函數(shù)的前向聲明:ATOM MyRegisterClass(HINSTANCE hInstance);BOOL InitInstance(HINSTANCE, int);LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);void AdjustTime(TimeStructure * x);INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM);int APIENTRY _tWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPTSTR lpCmdLine, _In_ int nCmdShow) UNREFERENCED_PARAMETER(hPrevInstance); UNREFERENCED_PARAMETER(lpCmdLine); / TODO: 在此放置代碼。 MSG msg; HACCEL hAccelTable; / 初始化全局字符串 LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_MY, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); / 執(zhí)行應(yīng)用程序初始化: if (!InitInstance (hInstance, nCmdShow) MessageBox(NULL,L創(chuàng)建窗口失敗！,_T(創(chuàng)建窗口),NULL); return FALSE; hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_MY); / 主消息循環(huán): while (GetMessage(&msg, NULL, 0, 0) if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg) TranslateMessage(&msg); DispatchMessage(&msg); return (int) msg.wParam;/ 函數(shù): MyRegisterClass()/ 目的: 注冊(cè)窗口類。/ATOM MyRegisterClass(HINSTANCE hInstance) WNDCLASSEX wcex; TCHAR szWindowClass=L窗口示例; TCHAR szTitle=L模擬時(shí)鐘; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = 0; wcex.lpfnWndProc = WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_APPLICATION); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wcex.lpszMenuName = NULL; wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_APPLICATION); if (!RegisterClassEx(&wcex) MessageBox(NULL,L注冊(cè)窗口失敗,_T(注冊(cè)窗口),NULL); return FALSE; return RegisterClassEx(&wcex);/ 函數(shù): InitInstance(HINSTANCE, int)/ 目的: 保存實(shí)例句柄并創(chuàng)建主窗口/ 注釋:/ 在此函數(shù)中，我們?cè)谌肿兞恐斜４鎸?shí)例句柄并/ 創(chuàng)建和顯示主程序窗口。/BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) HWND hWnd; hInst = hInstance; / 將實(shí)例句柄存儲(chǔ)在全局變量中 hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); if (!hWnd) return FALSE; ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE;/ 函數(shù): WndProc(HWND, UINT, WPARAM, LPARAM)/ 目的: 處理主窗口的消息。/ WM_COMMAND - 處理應(yīng)用程序菜單/ WM_PAINT - 繪制主窗口/ WM_DESTROY - 發(fā)送退出消息并返回/LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) int wmId, wmEvent; PAINTSTRUCT ps; HDC hdc; HBRUSH hBrush; HPEN hPen; RECT clientRect; static TimeStructure x; float sita=0; int xOrg,yOrg,rSec,rMin,rHour,rClock,xBegin,xEnd,yBegin,yEnd; switch (message) case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); / 分析菜單選擇: switch (wmId) case IDM_ABOUT: DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); break; case WM_CREATE: /創(chuàng)建窗口時(shí)，響應(yīng)的消息 SetTimer(hWnd,9999,1000,NULL); break; case WM_PAINT: x.sec+; AdjustTime(&x); hdc = BeginPaint(hWnd, &ps); / TODO: 在此添加任意繪圖代碼. GetClientRect(hWnd,&clientRect); /獲取用戶區(qū)的尺寸 hPen=(HPEN)GetStockObject(BLACK_PEN);/設(shè)置畫筆為系統(tǒng)預(yù)定的黑色畫筆 hBrush=CreateSolidBrush(RGB(255,220,220);/穿件粉紅色的單色畫刷 SelectObject(hdc,hPen); /選擇畫筆 SelectObject(hdc,hBrush); /選擇畫刷 xOrg=(clientRect.left+clientRect.right)/2; yOrg=(clientRect.top+clientRect.bottom)/2;/計(jì)算屏幕中心的坐標(biāo)，它也是鐘表的中心 rClock=min(xOrg,yOrg )-50; /鐘表的的半徑 rSec=rClock * 6/7; /秒針的半徑 rMin=rClock * 5/6; /分針的半徑 rHour=rClock * 2/3; /時(shí)針的半徑 Ellipse(hdc,xOrg-rClock,yOrg-rClock,xOrg+rClock,yOrg+rClock);/繪制表面圓 for(int i=0;isec=60) x-sec=0; x-min+; if(x-min=60) x-min=0; x-hour+; if(x-hour=12) x-hour=0; / “關(guān)于”框的消息處理程序。INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) UNREFERENCED_PARAMETER(lPara