用VS编译后改后缀名为scr,放到屏保目录
// Rain.cpp : 定义控制台应用程序的入口点。 // #include “stdafx.h” #include <windows.h> #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 ; wndclass.style = CS_HREDRAW | CS_VREDRAW ; wndclass.lpfnWndProc = WndProc ; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = 0 ; wndclass.hInstance = hInstance ; wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ; wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; wndclass.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH) ; wndclass.lpszMenuName = NULL ; wndclass.lpszClassName = 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 msg.wParam ; } TCHAR randomChar() //随机字符产生函数 { return (TCHAR)(rand()%(126-33)+33); //33到126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; j<cc->iStrLen-1; j++) { cc->current->prev = cc->point; //cc->point一个显示列的前个元素 cc->current->ch = '