C++------流星雨

概述用C++实现模拟数字、字母流星雨，其主要用到链表、win32编程基础。 demo实例： 1 // DataRainDemo.cpp : 定义应用程序的入口点。 2 // 3 4 #include "stdafx.h" 5 #include "DataRainDemo.h" 6 #include<time.h> 7 #include<stdlib.h>

用C++实现模拟数字、字母流星雨，其主要用到链表、win32编程基础。

demo实例：

  1 // DatarainDemo.cpp : 定义应用程序的入口点。  2 //  3   4 #include "stdafx.h"  5 #include "DatarainDemo.h"  6 #include<time.h>  7 #include<stdlib.h>  8 #include<windows.h>  9 #define STRMINLEN   8 10 #define STRMAXLEN    25 11  12  13  14 //双向链表的每一个节点 15 typedef struct MyList 16 { 17     struct MyList *prev;                //前一节点 18     struct MyList *pNext;                //下一节点 19     char ch;                                    //数据保存 20 } MyList,*pMyList; 21 //处理数据 22 typedef struct MyListColum 23 { 24     MyList *phead;                        //整个链表的头 25     MyList *pCurent;                        //链表所在当前的位置 26     MyList *pTemp;                        //临时变量 27     int ListStrLen;                            //整个链表的长度     28     int x,y;                                    //链表的位置 29     int iStopTimes; 30     int iMusstopTimes; 31 }StrColum,*pStrColum; 32  33  34 #define MAX_LOADSTRING 100 35  36 // 全局变量:  37 HINSTANCE hInst;                                // 当前实例 38 WCHAR szTitle[MAX_LOADSTRING];                  // 标题栏文本 39 WCHAR szWindowClass[MAX_LOADSTRING];            // 主窗口类名 40  41 // 此代码模块中包含的函数的前向声明:  42 ATOM                MyRegisterClass(HINSTANCE hInstance); 43 BOol                InitInstance(HINSTANCE,int); 44 LRESulT CALLBACK    WndProc(HWND,UINT,WParaM,LParaM); 45 INT_PTR CALLBACK    About(HWND,LParaM); 46  47 int APIENTRY wWinMain(_In_ HINSTANCE hInstance, 48                      _In_opt_ HINSTANCE hPrevInstance, 49                      _In_ LPWSTR    lpCmdline, 50                      _In_ int       nCmdshow) 51 { 52     UNREFERENCED_ParaMETER(hPrevInstance); 53     UNREFERENCED_ParaMETER(lpCmdline); 54  55     // Todo: 在此放置代码。 56  57     // 初始化全局字符串 58     LoadStringW(hInstance,IDS_APP_Title,szTitle,MAX_LOADSTRING); 59     LoadStringW(hInstance,IDC_DATaraINDEMO,szWindowClass,MAX_LOADSTRING); 60     MyRegisterClass(hInstance); 61  62     // 执行应用程序初始化:  63     if (!InitInstance (hInstance,nCmdshow)) 64     { 65         return FALSE; 66     } 67     srand(time(NulL));//以时间为种子 68     HACCEL hAcceltable = LoadAccelerators(hInstance,MAKEINTRESOURCE(IDC_DATaraINDEMO)); 69  70     MSG msg; 71  72     // 主消息循环:  73     while (GetMessage(&msg,nullptr,0,0)) 74     { 75         if (!TranslateAccelerator(msg.hwnd,hAcceltable,&msg)) 76         { 77             TranslateMessage(&msg); 78             dispatchMessage(&msg); 79         } 80     } 81  82     return (int) msg.wParam; 83 } 84 //宽字节 两个字节代表一个字符 85 TCHAR randomChar() 86 { 87     return (rand() % 10 + 98);//0-9的ASCII 88 } 89  90 // 91 //  函数: MyRegisterClass() 92 // 93 //  目的: 注册窗口类。 94 // 95 ATOM MyRegisterClass(HINSTANCE hInstance) 96 { 97     WNDCLASSEXW wcex; 98  99     wcex.cbSize = sizeof(WNDCLASSEX);100 101     wcex.style          = CS_HREDRAW | CS_VREDRAW;102     wcex.lpfnWndProc    = WndProc;103     wcex.cbClsExtra     = 0;104     wcex.cbWndExtra     = 0;105     wcex.hInstance      = hInstance;106     wcex.hIcon          = LoadIcon(hInstance,MAKEINTRESOURCE(IDI_DATaraINDEMO));107     wcex.hCursor        = LoadCursor(nullptr,IDC_ARROW);108     wcex.hbrBackground  = (HBrush)(color_WINDOW+1);109     wcex.lpszMenuname = NulL;//MAKEINTRESOURCEW(IDC_DATaraINDEMO);110     wcex.lpszClassname  = szWindowClass;111     wcex.hIconSm        = LoadIcon(wcex.hInstance,MAKEINTRESOURCE(IDI_SMALL));112 113     return RegisterClassExW(&wcex);114 }115 116 //117 //   函数: InitInstance(HINSTANCE,int)118 //119 //   目的: 保存实例句柄并创建主窗口120 //121 //   注释: 122 //123 //        在此函数中，我们在全局变量中保存实例句柄并124 //        创建和显示主程序窗口。125 //126 BOol InitInstance(HINSTANCE hInstance,int nCmdshow)127 {128    hInst = hInstance; // 将实例句柄存储在全局变量中129 130    /*HWND hWnd = CreateWindowW(szWindowClass,WS_OVERLAPPEDWINDOW,131       CW_USEDEFAulT,CW_USEDEFAulT,hInstance,nullptr);*/132    /*133        API 函数原型：134     HWND WINAPI CreateWindow(135       _In_opt_  LPCTSTR lpClassname,// 窗口类名称136       _In_opt_  LPCTSTR lpWindowname,// 窗口标题137       _In_      DWORD DWStyle,// 窗口风格，或称窗口格式138       _In_      int x,// 初始 x 坐标139       _In_      int y,// 初始 y 坐标140       _In_      int nWIDth,// 初始 x 方向尺寸141       _In_      int nHeight,// 初始 y 方向尺寸142       _In_opt_  HWND hWndParent,// 父窗口句柄143       _In_opt_  HMENU hMenu,// 窗口菜单句柄144       _In_opt_  HINSTANCE hInstance,// 程序实例句柄145       _In_opt_  LPVOID lpParam                      // 创建参数146     );147 148     注：_In_ 说明该参数是输入的，_opt_ 说明该参数是可选参数（不是说没有参数，而是可以利用宏搭配参数）。149    */150    HWND hWnd = CreateWindowW(szWindowClass,NulL,WS_DLGFRAME|WS_THICKFRAME|WS_POPUP,151        0,0,GetSystemMetrics(SM_CXSCREEN),GetSystemMetrics(SM_CYSCREEN),nullptr);152 153    if (!hWnd)154    {155       return FALSE;156    }157 158    ShowWindow(hWnd,nCmdshow);159    UpdateWindow(hWnd);160 161    return TRUE;162 }163 164 //165 //  函数: WndProc(HWND,LParaM)166 //167 //  目的:    处理主窗口的消息。168 //169 //  WM_COMMAND  - 处理应用程序菜单170 //  WM_PAINT    - 绘制主窗口171 //  WM_DESTROY  - 发送退出消息并返回172 //173 //174 //初始化每个链表175 voID init(StrColum *cc,int cyScreen,int x)176 {177     int j;178     cc->ListStrLen = rand() % (STRMAXLEN - STRMINLEN) + STRMINLEN;179     cc->x = x+3;180     cc->y = rand() % 3 ? rand() % cyScreen : 0;181     cc->iMusstopTimes = rand() % 6;182     cc->iStopTimes = 0;183     cc->phead = cc->pCurent = (pMyList)calloc(cc->ListStrLen,sizeof(MyList));184     for ( j = 0; j < cc->ListStrLen-1; j++)185     {186         cc->pCurent->prev = cc->pTemp;187         cc->pCurent->ch = ‘‘;1881         cc->pCurent->pNext = cc->pCurent + ;189;         cc->pTemp = cc->pCurent++190    } 191pTemp;     cc->pCurent->prev = cc->192‘     cc->pCurent->ch = ‘;193phead;194     cc->pCurent->pNext = cc->pCurent;195     cc->phead->prev = cc->phead;196     cc->pCurent = cc->pTemp = cc-> randomChar();197     cc->phead->ch =}198 LRESulT CALLBACK WndProc(HWND hWnd,UINT message,WParaM wParam,LParaM lParam)199 {200     HDC hdc;201 int i,j,temp,ctn;     202static HDC hdcmem;     203    HFont hFont;204 static HBITMAP hBimtmap;     205staticint      cxScreen,cyScreen; 206staticint     10 15 iFontWIDth = ,iColumCount;,iFontHeight = 207staticccChain;     208 StrColum *switch (message)     209    {210 case WM_CREATE:         211        {212  GetSystemMetrics(SM_CXSCREEN);213             cxScreen = GetSystemMetrics(SM_CYSCREEN);214             cyScreen =110             SetTimer(hWnd,,NulL);,215 GetDC(hWnd);216             hdc = CreateCompatibleDC(hdc);217             hdcmem = CreateCompatibleBitmap(hdc,cxScreen,cyScreen);218             hBimtmap =            SelectObject(hdcmem,hBimtmap);219             ReleaseDC(hWnd,hdc); 220 2215 222             hFont = CreateFont(iFontHeight,iFontWIDth - 223,                OUT_DEFAulT_PRECIS,CliP_DEFAulT_PRECIS,                 FW_BolD,DEFAulT_CHARSET,224  FF_SWISS,225                 DRAFT_QUAliTY,FIXED_PITCH |"Fixedsys                 TEXT("));226            SelectObject(hdcmem,hFont);227             DeleteObject(hFont);228             SetBkMode(hdcmem,transparent);229 //设置显示的列数             23032             iColumCount = cxScreen / (iFontWIDth * ); / 231callocsizeof             ccChain = (pStrColum)(StrColum));(iColumCount,232forint             0 () i = 233; i < iColumCount; i++            {234 32                 init(ccChain + i,cyScreen,(iFontWIDth*i);/235)*            }236 return0             ; 237        }238 break;         239case WM_COMMAND:     240        {241 int LOWORD(wParam);             242 wmID =// 分析菜单选择:              243switch (wmID)             244            {245 case IDM_ABOUT:             246                DialogBox(hInst,MAKEINTRESOURCE(IDD_ABOUTBox),hWnd,About);247 break;                 248case IDM_EXIT:             249                DestroyWindow(hWnd);250 break;                 251default:             252return DefWindowProc(hWnd,message,wParam,lParam);                 253            }254         }255 break;         256case WM_PAINT:     257        {258             PAINTSTRUCT ps;259 ps);260             HDC hdc = BeginPaint(hWnd,&// Todo: 在此处添加使用 hdc 的任何绘图代码...             261ps);262             EndPaint(hWnd,&        }263 break;         264265case      WM_DESTROY:     2661);         KillTimer(hWnd,267        DeleteObject(hBimtmap);268         DeleteDC(hdcmem);269 for0         ) ( i = 270; i < iColumCount; i++        {271 freepCurent);             272((ccChain+i)->        }273 free(ccChain);         2740);         PostQuitMessage(275break;         276default:     277return DefWindowProc(hWnd,lParam);         278case WM_TIMER:     279    {280  GetDC(hWnd);281         hdc =282for         PatBlt(hdcmem,BLACKnesS);int         0 () i = 283; i < iColumCount; i++        {284 iMusstopTimes;285             ctn = (ccChain + i)->iStopTimes++ >(ccChain + i)->phead;286             (ccChain + i)->pTemp = (ccChain + i)->255255             SetTextcolor(hdcmem,RGB(255,));,2871);             textout(hdcmem,(ccChain+i)->x,(ccChain+i)->y,&((ccChain+i)->pTemp->ch),288y;289             j = (ccChain + i)->pNext;290             (ccChain + i)->pTemp = (ccChain + i)->pTemp->0;             temp = 291//temp 绿色过度到黑色             292whilephead             293 ((ccChain+i)->pTemp!=(ccChain+i)->ch)294                 &&(ccChain+i)->pTemp->            {295 0255                 SetTextcolor(hdcmem,RGB(255,)-(296*(temp++0));                     /(ccChain+i)->ListStrLen),297iFontHeight,298                 textout(hdcmem,j-=1);                     &((ccChain+i)->pTemp->ch),299pNext;300                 (ccChain + i)->pTemp = (ccChain + i)->pTemp->            }301 if (ctn)             3020;                 (ccChain + i)->iStopTimes = 303else304             continue;                 305//下次开始显示的地方             (ccChain + i)->y += iFontHeight;306ifcyScreen)             307 ((ccChain+i)->y-(ccChain+i)->ListStrLen*iFontHeight>            {308 freepCurent);                 309((ccChain+i)->32                 init(ccChain+i,(iFontWIDth*i);/310)*            }311 prev;312             (ccChain + i)->phead = (ccChain + i)->phead-> randomChar();313             (ccChain + i)->phead->ch =        }314 315316         ReleaseDC(hWnd,hdc);         BitBlt(hdc,hdcmem,SRCcopY);317     }318 //case WM_RbuttonDOWN:     319//    KillTimer(hWnd,1);     320//    return 0;     321//case WM_RbuttonUP:     322//    SetTimer(hWnd,1,10,NulL);     323//    return 0;     324325    }         326 return0     ; 327}328 329330 331 332 333 334 //  “关于”框的消息处理程序。 335INT_PTR CALLBACK About(HWND hDlg,LParaM lParam)336 {337     UNREFERENCED_ParaMETER(lParam);338 switch (message)     339    {340 case WM_INITDIALOG:     341return (INT_PTR)TRUE;         342343case  WM_COMMAND:     344if IDCANCEL)         345 (LOWORD(wParam) == IDOK || LOWORD(wParam) ==        {346             EndDialog(hDlg,LOWORD(wParam));347 return (INT_PTR)TRUE;             348        }349 break;         350    }351 return (INT_PTR)FALSE;     352 }

 

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