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□ 主题： VB 清除IE的所有缓存和Cookies

□ 内容：

1楼

      IE的缓存和Cookies，可以通过WinInet.dll库中的函数来进行操作的
      如果要查找所有的缓存和Cookies，需要使用FindFirstUrlCacheEntry和FindNextUrlCacheEntry这两个函数
      如果要删除相对应的缓存和Cookies，就使用DeleteUrlCacheEntry函数

      源代码如下：

      Option Explicit

      Private Const ERROR_CACHE_FIND_FAIL As Long = 0
      Private Const ERROR_CACHE_FIND_SUCCESS As Long = 1
      Private Const ERROR_FILE_NOT_FOUND As Long = 2
      Private Const ERROR_ACCESS_DENIED As Long = 5
      Private Const ERROR_INSUFFICIENT_BUFFER As Long = 122
      Private Const MAX_PATH As Long = 260
      Private Const MAX_CACHE_ENTRY_INFO_SIZE As Long = 4096

      Private Const LMEM_FIXED As Long = &H0
      Private Const LMEM_ZEROINIT As Long = &H40
      Private Const LPTR As Long = (LMEM_FIXED Or LMEM_ZEROINIT)

      Private Const NORMAL_CACHE_ENTRY As Long = &H1
      Private Const EDITED_CACHE_ENTRY As Long = &H8
      Private Const TRACK_OFFLINE_CACHE_ENTRY As Long = &H10
      Private Const TRACK_ONLINE_CACHE_ENTRY As Long = &H20
      Private Const STICKY_CACHE_ENTRY As Long = &H40
      Private Const SPARSE_CACHE_ENTRY As Long = &H10000
      Private Const COOKIE_CACHE_ENTRY As Long = &H100000
      Private Const URLHISTORY_CACHE_ENTRY As Long = &H200000
      Private Const URLCACHE_FIND_DEFAULT_FILTER As Long = NORMAL_CACHE_ENTRY Or _
       COOKIE_CACHE_ENTRY Or _
       URLHISTORY_CACHE_ENTRY Or _
       TRACK_OFFLINE_CACHE_ENTRY Or _
       TRACK_ONLINE_CACHE_ENTRY Or _
       STICKY_CACHE_ENTRY
      Private Type FILETIME
       dwLowDateTime As Long
       dwHighDateTime As Long
      End Type

      Private Type INTERNET_CACHE_ENTRY_INFO
       dwStructSize As Long
       lpszSourceUrlName As Long
       lpszLocalFileName As Long
       CacheEntryType As Long
       dwUseCount As Long
       dwHitRate As Long
       dwSizeLow As Long
       dwSizeHigh As Long
       LastModifiedTime As FILETIME
       ExpireTime As FILETIME
       LastAccessTime As FILETIME
       LastSyncTime As FILETIME
       lpHeaderInfo As Long
       dwHeaderInfoSize As Long
       lpszFileExtension As Long
       dwExemptDelta As Long
      End Type

      Private Declare Function FindFirstUrlCacheEntry Lib "wininet" _
       Alias "FindFirstUrlCacheEntryA" _
       (ByVal lpszUrlSearchPattern As String, _
       lpFirstCacheEntryInfo As Any, _
       lpdwFirstCacheEntryInfoBufferSize As Long) As Long

      Private Declare Function FindNextUrlCacheEntry Lib "wininet" _
       Alias "FindNextUrlCacheEntryA" _
       (ByVal hEnumHandle As Long, _
       lpNextCacheEntryInfo As Any, _
       lpdwNextCacheEntryInfoBufferSize As Long) As Long

      Private Declare Function FindCloseUrlCache Lib "wininet" _
       (ByVal hEnumHandle As Long) As Long

      Private Declare Function DeleteUrlCacheEntry Lib "wininet" _
       Alias "DeleteUrlCacheEntryA" _
       (ByVal lpszUrlName As String) As Long

      Private Declare Sub CopyMemory Lib "kernel32" _
       Alias "RtlMoveMemory" _
       (pDest As Any, _
       pSource As Any, _
       ByVal dwLength As Long)

      Private Declare Function lstrcpyA Lib "kernel32" _
       (ByVal RetVal As String, ByVal Ptr As Long) As Long

      Private Declare Function lstrlenA Lib "kernel32" _
       (ByVal Ptr As Any) As Long

      Private Declare Function LocalAlloc Lib "kernel32" _
       (ByVal uFlags As Long, _
       ByVal uBytes As Long) As Long

      Private Declare Function LocalFree Lib "kernel32" _
       (ByVal hMem As Long) As Long





      Public Sub DeleteCacheURLList()

       Dim icei As INTERNET_CACHE_ENTRY_INFO
       Dim hFile As Long
       Dim cachefile As String
       Dim posUrl As Long
       Dim posEnd As Long
       Dim dwBuffer As Long
       Dim pntrICE As Long


       hFile = FindFirstUrlCacheEntry(0&, ByVal 0, dwBuffer)

       If (hFile = ERROR_CACHE_FIND_FAIL) And _
       (Err.LastDllError = ERROR_INSUFFICIENT_BUFFER) Then

       pntrICE = LocalAlloc(LMEM_FIXED, dwBuffer)

       If pntrICE <> 0 Then

       CopyMemory ByVal pntrICE, dwBuffer, 4

       hFile = FindFirstUrlCacheEntry(vbNullString, _
       ByVal pntrICE, _
       dwBuffer)


       If hFile <> ERROR_CACHE_FIND_FAIL Then

       Do

       CopyMemory icei, ByVal pntrICE, Len(icei)


       If (icei.CacheEntryType And _
       NORMAL_CACHE_ENTRY) = NORMAL_CACHE_ENTRY Then

       cachefile = GetStrFromPtrA(icei.lpszSourceUrlName)
       Call DeleteUrlCacheEntry(cachefile)

       End If

       Call LocalFree(pntrICE)

       dwBuffer = 0
       Call FindNextUrlCacheEntry(hFile, ByVal 0, dwBuffer)

       ''allocate and assign the memory to the pointer
       pntrICE = LocalAlloc(LMEM_FIXED, dwBuffer)
       CopyMemory ByVal pntrICE, dwBuffer, 4

       DoEvents

       Loop While FindNextUrlCacheEntry(hFile, ByVal pntrICE, dwBuffer)

       End If ''hFile

       End If ''pntrICE

       End If ''hFile

       Call LocalFree(pntrICE)
       Call FindCloseUrlCache(hFile)

      End Sub


      Private Function GetStrFromPtrA(ByVal lpszA As Long) As String

       GetStrFromPtrA = String$(lstrlenA(ByVal lpszA), 0)
       Call lstrcpyA(ByVal GetStrFromPtrA, ByVal lpszA)

      End Function

——

□ 争分夺秒背单词 → hay n.干草

□ 发帖时间：2014-8-12｜0:27:43

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