From: http://www.cnblogs.com/doublesnke/archive/2011/08/16/2141374.html

VC++實(shí)施文件監(jiān)控：實(shí)例和詳解

相關(guān)幫助: http://hi.baidu.com/jiahaosoft/blog/item/b441d1218eebece0d6cae274.html

我這里只介紹采用ReadDirectoryChangesW對(duì)文件目錄實(shí)施監(jiān)控

關(guān)鍵代碼

?

CfgdsgDlg * dlg = (CfgdsgDlg*)lparam; ????HANDLE hDir; ????char notify[1024]; ????DWORD cbBytes,i; ????char AnsiChar[3]; ????wchar_t UnicodeChar[2]; ????CString path; ????FILE_NOTIFY_INFORMATION *pnotify=(FILE_NOTIFY_INFORMATION *)notify; ????FILE_NOTIFY_INFORMATION *tmp; ????GetCurrentDirectory(MAX_PATH,path.GetBuffer(MAX_PATH+1)); ????hDir = CreateFile( path, FILE_LIST_DIRECTORY, ????????FILE_SHARE_READ | ????????FILE_SHARE_WRITE | ????????FILE_SHARE_DELETE, NULL, ????????OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS | ????????FILE_FLAG_OVERLAPPED, NULL); ????if (hDir == INVALID_HANDLE_VALUE) ????{ ????????dlg->m_edit.ReplaceSel("hDir:INVALID_HANDLE_VALUE\r\n"); ????????return 0; ????} ????while (TRUE) ????{ ????????if(ReadDirectoryChangesW(hDir, &notify, sizeof(notify), ????????????FALSE, FILE_NOTIFY_CHANGE_FILE_NAME| FILE_NOTIFY_CHANGE_LAST_WRITE, ????????????&cbBytes, NULL, NULL)) ????????{ ????????????tmp = pnotify; ????????????switch(tmp->Action) ????????????{ ????????????case FILE_ACTION_ADDED: ????????????????dlg->m_edit.ReplaceSel("Directory/File added （添加文件）- \r\n"); ????????????????break; ????????????case FILE_ACTION_REMOVED: ????????????????dlg->m_edit.ReplaceSel("Directory/File removed （刪除文件）- \r\n"); ????????????????break; ????????????case FILE_ACTION_MODIFIED: ????????????????dlg->m_edit.ReplaceSel("Directory/File modified （修改文件內(nèi)容）- \r\n"); ????????????????break; ????????????case FILE_ACTION_RENAMED_OLD_NAME: ????????????????dlg->m_edit.ReplaceSel("Directory/File old name （修改文件名字）- \r\n"); ????????????????break; ????????????case FILE_ACTION_RENAMED_NEW_NAME: ????????????????dlg->m_edit.ReplaceSel("Directory/File new name - \r\n"); ????????????????break; ????????????default: ????????????????break; ????????????} ????????} ????}

　　

FILE_NOTIFY_INFORMATION //可以確定是那個(gè)文件進(jìn)行的修改

typedef struct _FILE_NOTIFY_INFORMATION {
? DWORD NextEntryOffset;
? DWORD Action;//動(dòng)作
? DWORD FileNameLength;//文件名字的長(zhǎng)度
? WCHAR FileName[1];//文件名字
} FILE_NOTIFY_INFORMATION,
*PFILE_NOTIFY_INFORMATION;

ReadDirectoryChangesW 返回類型(見MSDN)

ValueMeaning

FILE_ACTION_ADDED 0x00000001	The file was added to the directory.
FILE_ACTION_REMOVED 0x00000002	The file was removed from the directory.
FILE_ACTION_MODIFIED 0x00000003	The file was modified. This can be a change in the time stamp or attributes.
FILE_ACTION_RENAMED_OLD_NAME 0x00000004	The file was renamed and this is the old name.
FILE_ACTION_RENAMED_NEW_NAME 0x00000005	The file was renamed and this is the new name.

效果如下：

不足的地方:

只能檢測(cè)到指定目錄和下一級(jí)目錄，超過(guò)目錄級(jí)數(shù)，該函數(shù)檢測(cè)不到。

總結(jié)

以上是生活随笔為你收集整理的VC++文件监控(一) ReadDirectoryChangesW的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。