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相信大家看过许许多多的关于计算机黑客、骇客、人工智能、AI方面的电影，每当黑客入侵某个五角大楼，某个网站时，都会出现这样一幅画面：

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然后就轻而易举的成功入侵夺取管理员权限了，这时候的我们，心情肯定是激动的无以复加，心里大喊着：666！！！，如果我有这么厉害的技术就好了！所以大家想到今天要说的是什么了吗？

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O(∩_∩)O和这并没有太大的关系，今天我们要讲的是《数字雨》！

好了，我们来看下什么是数字雨：

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数字雨，顾名思义，就是类似于填上下雨一样，往下掉数字或者是文字。如下动态图：

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这样看起来是不是感觉我们像是进入了一个科幻的虚拟世界呢？当然了程序运行后会有有个小小的惊喜哦？

#include <Windows.h>

#include <time.h>

#include <mmsystem.h>

#pragma comment(lib, "WINMM.LIB")

#define NumOfColumn 25 //显示列的列数

typedef struct charList

{

struct charList * prev;

TCHAR ch; //放字符

struct charList * next;

}CharList;

typedef struct tagCharColumn

{

struct charList * head, *cur;

int x, y, iShownLen, iStrNum; //显示字数，字符数

}CharQueue;

struct showChar

{

TCHAR myChar[60];

int iNum; //字符个数

}charArr[7] = {//《一颗开花的树》-席慕容

{ TEXT("如何让你遇见我，在我最美丽的时刻"),16 },

{ TEXT("为这，我已在佛前求了五百年，求他让我们结一段尘缘"),24 },

{ TEXT("佛于是把我化作一棵树，长在你必经的路旁"),19 },

{ TEXT("阳光下慎重地开满了花，朵朵都是我前世的盼望"),21 },

{ TEXT("当你走进，请你细听，那颤抖的叶是我等待的热情"),21 },

{ TEXT("而当你终于无视地走过，在你身后落了一地的"), 20 },

{ TEXT("朋友啊，那不是花瓣，是我凋零的心"),16 }

};

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)

{

TCHAR szClassName[] = TEXT("数字雨");

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 = NULL;

wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

wndclass.lpszMenuName = NULL;

wndclass.lpszClassName = szClassName;

if (!RegisterClass(&wndclass))

{

return 0;

}

hwnd = CreateWindow(szClassName, NULL, WS_DLGFRAME | WS_THICKFRAME | WS_POPUP, 0, 0, GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN), NULL, NULL, hInstance, NULL);

ShowWindow(hwnd, SW_SHOWMAXIMIZED);

UpdateWindow(hwnd);

ShowCursor(FALSE);

srand(time(0));

//消息机制

while (GetMessage(&msg, NULL, 0, 0))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

ShowCursor(TRUE);

return msg.wParam;

}

void CreateQueue(CharQueue * cc, int cyScreen, int x)

{

//bug -- 调用API---写接口---ctrl+c/ctrl+v

CharList * front;

int NumTemp = rand() % 6;

cc->x = x;

cc->y = rand() % 10 ? rand() % cyScreen : 0; //大约9/10的概率从中间开始下落。

cc->iShownLen = 1; //一开始就显示一个字符，然后慢慢增加，增加到等于歌词字符数时保持不变

cc->iStrNum = charArr[NumTemp].iNum; //歌词字符数

cc->head = cc->cur = front = (CharList *)calloc(cc->iStrNum, sizeof(CharList)); //创建显示列

//生成每个节点

int i;

for (i = 0; iiStrNum - 1; i++)

{

cc->cur->prev = front;

cc->cur->ch = charArr[NumTemp].myChar[i];

front = cc->cur++;

front->next = cc->cur;

}

//最后一个是标点符号

cc->cur->prev = front;

cc->cur->ch = charArr[NumTemp].myChar[i];

cc->cur->next = cc->head;

cc->head->prev = cc->cur;

cc->cur = cc->head;

}

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

HDC hdc;

static HDC hdcMem;

static HBITMAP hBitmap;

static CharQueue * AllChar;

HFONT hFont;

static int cxScreen, cyScreen;

static int iFontWidth = 20, iFontHeight = 20;

int i, j, y, greenToblack;

CharQueue * ccElem;

CharList * temp;

switch (message)

{

case WM_CREATE:

cxScreen = GetSystemMetrics(SM_CXSCREEN);

cyScreen = GetSystemMetrics(SM_CYSCREEN);

SetTimer(hwnd, 1, 70, NULL);

hdc = GetDC(hwnd);

hdcMem = CreateCompatibleDC(hdc);

hBitmap = CreateCompatibleBitmap(hdc, cxScreen, cyScreen);

SelectObject(hdcMem, hBitmap);

ReleaseDC(hwnd, hdc);

hFont = CreateFont(iFontHeight, iFontWidth, 0/*角度设置*/, 0/*角度设置*/, FW_BOLD/*黑体*/, 0, 0, 0,/*斜体 下划线 啊、删除线*/

DEFAULT_CHARSET/*字符集*/, OUT_DEFAULT_PRECIS/*指定输出精度*/, CLIP_DEFAULT_PRECIS/*指定裁剪精度*/,

DRAFT_QUALITY/*指向输出质量*/, FIXED_PITCH | FF_SWISS/*指定字体间距| 字体族*/, TEXT("宋体"));

SelectObject(hdcMem, hFont);

DeleteObject(hFont);

SetBkMode(hdcMem, TRANSPARENT);

PlaySound(L"素材.wav", NULL, SND_FILENAME | SND_ASYNC | SND_LOOP);//异步循环播放

AllChar = (CharQueue *)calloc(NumOfColumn, sizeof(CharQueue));//自动初始化为o

for (i = 0; i

{

CreateQueue(AllChar + i, cyScreen, 50 * i + 20);

}

return 0;

case WM_TIMER:

//该函数使用当前选入指定设备环境中的刷子绘制给定的矩形区域。通过使用给出的光栅操作来对该刷子的颜色和表面颜色进行组合。

PatBlt(hdcMem, 0, 0, cxScreen, cyScreen, BLACKNESS);

for (i = 0; i

{

ccElem = AllChar + i;

temp = ccElem->head;

SetTextColor(hdcMem, RGB(255, 255, 255));

TextOut(hdcMem, ccElem->x, ccElem->y, &temp->ch, 1/*字符个数*/);

y = ccElem->y;

greenToblack = 0;

ccElem->head = ccElem->head->next;

temp = temp->prev;

for (j = 1; jiShownLen; j++)

{

SetTextColor(hdcMem, RGB(/*greenToblack*5%255*/0, 255 - 255 * (greenToblack++) / (ccElem->iStrNum), 0));

TextOut(hdcMem, ccElem->x, y -= iFontHeight, &temp->ch, 1);

temp = temp->prev;

}

if (ccElem->iShownLeniStrNum)

{

ccElem->iShownLen++;

}

ccElem->y += iFontHeight;

if (ccElem->y - ccElem->iStrNum*iFontHeight>cyScreen)

{

free(ccElem->cur);

CreateQueue(ccElem, cyScreen, 128 * i + 17);

}

}

hdc = GetDC(hwnd);

BitBlt(hdc, 0, 0, cxScreen, cyScreen, hdcMem, 0, 0, SRCCOPY);

ReleaseDC(hwnd, hdc);

return 0;

case WM_RBUTTONDOWN:

KillTimer(hwnd, 1);

return 0;

case WM_RBUTTONUP:

SetTimer(hwnd, 1, 70, NULL);

return 0;

//case WM_LBUTTONDOWN:

case WM_KEYDOWN:

case WM_DESTROY:

KillTimer(hwnd, 1);

for (i = 0; i

{

ccElem = AllChar + i;

free(ccElem->cur);

}

free(AllChar);

DeleteObject(hBitmap);

DeleteDC(hdcMem);

PostQuitMessage(0);

break;

}

return DefWindowProc(hwnd, message, wParam, lParam);

}

看完了今天的效果图和代码，细心的大家是不是发现了什么？没错

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这回不忽悠大家了，代码中引用的诗歌，貌似是一首关于情感方面的的现代诗！当然了，这个程序你用到什么方面就不管我的事情了，正好里面也会调用音乐，氛围也不错，一打开就是满满的惊喜。今天的程序就到这里了，喜欢的小伙伴多多转发关注哦！

同时也可以关注我们的公众号：【轻松学C语言】