【终极超详细版】数字雨C语言代码

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2024年5月18日发(作者：)

直接复制以下代码到编译器上运行便可看到超级炫酷的数字雨效果

#include

#define ID_TIMER 1

#define STRMAXLEN 25 //一个显示列的最大长度

#define STRMINLEN 8 //一个显示列的最小长度

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

//////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////

typedef struct tagCharChain //整个当作屏幕的一个显示列,这是个双向列表

{

struct tagCharChain *prev; //链表的前个元素

TCHAR ch; //一个显示列中的一个字符

struct tagCharChain *next; //链表的后个元素

}CharChain, *pCharChain;

typedef struct tagCharColumn

{

CharChain *head, *current, *point;

int x, y, iStrLen; //显示列的开始显示的x,y坐标,iStrLen是这个列的长度

int iStopTimes, iMustStopTimes; //已经停滞的次数和必须停滞的次数,必须停

滞的次数是随机的

}CharColumn, *pCharColumn;

int main(HINSTANCE hInstance, HINSTANCE hPrevInstance,

PSTR szCmdLine, int iCmdShow)

{

static TCHAR szAppName[] = TEXT ("matrix") ;

HWND hwnd ;

MSG msg ;

WNDCLASS wndclass ;

= CS_HREDRAW | CS_VREDRAW ;

dProc = WndProc ;

xtra = 0 ;

xtra = 0 ;

nce = hInstance ;

= LoadIcon (NULL, IDI_APPLICATION) ;

r = LoadCursor (NULL, IDC_ARROW) ;

kground = (HBRUSH) GetStockObject

(BLACK_BRUSH) ;

nuName = NULL ;

assName = szAppName ;

if(!RegisterClass (&wndclass))

{

MessageBox (NULL, TEXT ("此程序必须运行在NT下!"), szAppName,

MB_ICONERROR) ;

return 0;

}

hwnd = CreateWindow (szAppName, NULL,

WS_DLGFRAME | WS_THICKFRAME | WS_POPUP,

0, 0,

GetSystemMetrics(SM_CXSCREEN),

GetSystemMetrics(SM_CYSCREEN),

NULL, NULL, hInstance,

NULL) ;

ShowWindow (hwnd, SW_SHOWMAXIMIZED) ; //最大化显示

UpdateWindow (hwnd) ;

ShowCursor(FALSE); //隐藏鼠标光标

srand ((int) GetCurrentTime ()) ; //初始化随机数发生器

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

{

TranslateMessage (&msg) ;

DispatchMessage (&msg) ;

}

ShowCursor(TRUE); //显示鼠标光标

return ;

}

TCHAR randomChar() //随机字符产生函数

{

return (TCHAR)(rand()%(126-33)+33); //33到之间

}

int init(CharColumn *cc, int cyScreen, int x) //初始化

{

int j;

cc->iStrLen = rand()%(STRMAXLEN-STRMINLEN) + STRMINLEN; //显示列

的长度

cc->x = x+3 ; //显示列的开始显示的x坐标

cc->y =rand()%3?rand()%cyScreen:0; //显示列的开始显示的y坐标

cc->iMustStopTimes = rand()%6 ;

cc->iStopTimes = 0 ;

cc->head = cc->current =

(pCharChain)calloc(cc->iStrLen, sizeof(CharChain)); //生

成显示列

for(j=0; jiStrLen-1; j++)

{

cc->current->prev = cc->point; //cc->point一个显示列的前个元素

cc->current->ch = '0';

cc->current->next = cc->current+1; //cc->current+1一个显示列

的后个元素

cc->point = cc->current++; //cc->point = cc->current;

cc->current++;

}

cc->current->prev = cc->point; //最后一个节点

cc->current->ch = '0';

cc->current->next = cc->head;

cc->head->prev = cc->current; //头节点的前一个为此链的最后一个元素

cc->current = cc->point = cc->head; //free掉申请的内存要用current当参数

cc->head->ch = randomChar(); // 对链表头的元素填充

return 0;

}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM

wParam, LPARAM lParam)

{

HDC hdc ;

//ctn 用来确定一个显示链是否向下前进,如果等待次数超过必须等待的次数,ctn就

代表要向下前进

int i, j, temp, ctn; //j为一个显示链中除链表头外的在屏幕上显示的y坐标,temp绿

色过度到黑色之用

static HDC hdcMem;

HFONT hFont;

static HBITMAP hBitmap;

static int cxScreen, cyScreen; //屏幕的宽度高度.

static int iFontWidth=10, iFontHeight=15, iColumnCount; //字体的宽度高度,

列数

static CharColumn *ccChain;

switch (message)

{

case WM_CREATE:

cxScreen = GetSystemMetrics(SM_CXSCREEN) ; //屏幕宽度

cyScreen = GetSystemMetrics(SM_CYSCREEN) ;

SetTimer (hwnd, ID_TIMER, 10, NULL) ;

hdc = GetDC(hwnd);

hdcMem = CreateCompatibleDC(hdc);

hBitmap = CreateCompatibleBitmap(hdc, cxScreen, cyScreen);

SelectObject(hdcMem, hBitmap);

ReleaseDC(hwnd, hdc);

//创建字体

hFont = CreateFont(iFontHeight, iFontWidth-5, 0, 0, FW_BOLD, 0, 0, 0,

DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,

DRAFT_QUALITY, FIXED_PITCH | FF_SWISS,

TEXT("Fixedsys"));

SelectObject(hdcMem, hFont);

DeleteObject (hFont) ;

SetBkMode(hdcMem, TRANSPARENT); //设置背景模式为透明

iColumnCount = cxScreen/(iFontWidth*3/2); //屏幕所显示字母雨的列

数

ccChain = (pCharColumn)calloc(iColumnCount, sizeof(CharColumn));

for(i=0; i

{

init(ccChain+i, cyScreen, (iFontWidth*3/2)*i);

}

return 0 ;

case WM_TIMER:

hdc = GetDC(hwnd);

PatBlt (hdcMem, 0, 0, cxScreen, cyScreen, BLACKNESS) ; //将内存设备

映像刷成黑色

for(i=0; i

{

ctn = (ccChain+i)->iStopTimes++ >

(ccChain+i)->iMustStopTimes;

//

(ccChain+i)->point = (ccChain+i)->head; //point用于遍历整个显示

列

//第一个字符显示为白色

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

TextOut(hdcMem, (ccChain+i)->x, (ccChain+i)->y, &((ccChain+i)->point->ch),

1);

j = (ccChain+i)->y;

(ccChain+i)->point = (ccChain+i)->point->next;

//遍历整个显示列,将这个显示列里的字符从下往上显示

temp = 0 ; //temp绿色过度到黑色之用

while((ccChain+i)->point != (ccChain+i)->head &&

(ccChain+i)->point->ch)

{

SetTextColor(hdcMem, RGB(0,

255-(255*(temp++)/(ccChain+i)->iStrLen), 0));

TextOut(hdcMem, (ccChain+i)->x, j-=iFontHeight,

&((ccChain+i)->point->ch), 1);

(ccChain+i)->point = (ccChain+i)->point->next;

}

if(ctn)

(ccChain+i)->iStopTimes = 0 ;

else continue;

(ccChain+i)->y += iFontHeight; //下次开始显示的y坐标为当前的y坐

标加上一个字符的高度

//如果开始显示的y坐标减去整个显示列的长度超过了屏幕的高度

if( (ccChain+i)->y-(ccChain+i)->iStrLen*iFontHeight > cyScreen)

{

free( (ccChain+i)->current );

init(ccChain+i, cyScreen, (iFontWidth*3/2)*i);

}

//链表的头为此链表的前个元素,因为下次开始显示的时候就相当与在整

个显示列的开头添加个元素,然后在开始往上显示

(ccChain+i)->head = (ccChain+i)->head->prev;

(ccChain+i)->head->ch = randomChar();

}

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

ReleaseDC(hwnd, hdc);

return 0;

case WM_RBUTTONDOWN:

KillTimer (hwnd, ID_TIMER) ;

return 0;

case WM_RBUTTONUP:

SetTimer (hwnd, ID_TIMER, 10, NULL) ;

return 0;

//处理善后工作

case WM_KEYDOWN:

case WM_LBUTTONDOWN:

case WM_DESTROY:

KillTimer (hwnd, ID_TIMER) ;

DeleteObject(hBitmap);

DeleteDC(hdcMem);

for(i=0; i

{

free( (ccChain+i)->current );

}

free(ccChain);

PostQuitMessage (0) ;

return 0 ;

}

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

}

本文标签： 显示开始代码屏幕黑色