c++实现文件监控

#include "stdafx.h" #include "MonitorFile.h" void ShowError(char *pszText) { char szErr[MAX_PATH] = { 0 }; ::wsprintf(szErr, "%s Error[%d]\n", pszText, ::GetLastError()); ::MessageBox(NULL, szErr, "ERROR", MB_OK | MB_ICONERROR); } // 宽字节字符串转多字节字符串 void W2C(wchar_t *pwszSrc, int iSrcLen, char *pszDest, int iDestLen) { ::RtlZeroMemory(pszDest, iDestLen); // 宽字节字符串转多字节字符串 ::WideCharToMultiByte(CP_ACP, 0, pwszSrc, (iSrcLen / 2), pszDest, iDestLen, NULL, NULL); } // 目录监控多线程 UINT MonitorFileThreadProc(LPVOID lpVoid) { char *pszDirectory = (char *)lpVoid; // 打开目录, 获取文件句柄 HANDLE hDirectory = ::CreateFile(pszDirectory, FILE_LIST_DIRECTORY, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); if (INVALID_HANDLE_VALUE == hDirectory) { ShowError("CreateFile"); return 1; } char szTemp[MAX_PATH] = { 0 }; BOOL bRet = FALSE; DWORD dwRet = 0; DWORD dwBufferSize = 2048; // 申请一个足够大的缓冲区 BYTE *pBuf = new BYTE[dwBufferSize]; if (NULL == pBuf) { ShowError("new"); return 2; } FILE_NOTIFY_INFORMATION *pFileNotifyInfo = (FILE_NOTIFY_INFORMATION *)pBuf; // 开始循环设置监控 do { ::RtlZeroMemory(pFileNotifyInfo, dwBufferSize); // 设置监控目录 bRet = ::ReadDirectoryChangesW(hDirectory, pFileNotifyInfo, dwBufferSize, TRUE, FILE_NOTIFY_CHANGE_FILE_NAME | // 修改文件名 FILE_NOTIFY_CHANGE_ATTRIBUTES | // 修改文件属性 FILE_NOTIFY_CHANGE_LAST_WRITE, // 最后一次写入 &dwRet, NULL, NULL); if (FALSE == bRet) { ShowError("ReadDirectoryChangesW"); break; } // 将宽字符转换成窄字符 W2C((wchar_t *)(&pFileNotifyInfo->FileName), pFileNotifyInfo->FileNameLength, szTemp, MAX_PATH); // 判断操作类型并显示 switch (pFileNotifyInfo->Action) { case FILE_ACTION_ADDED: { // 新增文件 printf("[File Added Action]%s\n", szTemp); break; } default: { break; } } } while (bRet); // 关闭句柄, 释放内存 ::CloseHandle(hDirectory); delete[] pBuf; pBuf = NULL; return 0; } // 创建目录监控多线程 void MonitorFile(char *pszDirectory) { // 创建文件监控多线程 ::CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)MonitorFileThreadProc, pszDirectory, 0, NULL); } int _tmain(int argc, _TCHAR* argv[]) { // 注意目录路径的末尾要加上反斜杠'\' MonitorFile("C:\\Users\\Administrator\\Desktop\\1\\"); printf("monitor...\n"); getchar(); return 0; }