改变文件的访问时间

hnzsy 2003-01-06 01:01:30
我用API能改变文件的创建时间,最近修改时间,但不能改变访问时间,请问该怎么办?
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hnzsy 2003-01-06
各位,本人就是用SetFileTime ,但不行,不知还有没有其它方法
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zyl910 2003-01-06
'File Date
'This project needs a Common Dialog box, named CDBox.
' (To add the Common Dialog Box to your tools menu, go to Project->Components (or press CTRL-T)
' and select Microsoft Common Dialog control)
Private Type FILETIME
dwLowDateTime As Long
dwHighDateTime As Long
End Type
Private Type SYSTEMTIME
wYear As Integer
wMonth As Integer
wDayOfWeek As Integer
wDay As Integer
wHour As Integer
wMinute As Integer
wSecond As Integer
wMilliseconds As Integer
End Type
Private Const GENERIC_WRITE = &H40000000
Private Const OPEN_EXISTING = 3
Private Const FILE_SHARE_READ = &H1
Private Const FILE_SHARE_WRITE = &H2
Private Declare Function CreateFile Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName As String, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, ByVal lpSecurityAttributes As Long, ByVal dwCreationDisposition As Long, ByVal dwFlagsAndAttributes As Long, ByVal hTemplateFile As Long) As Long
Private Declare Function SetFileTime Lib "kernel32" (ByVal hFile As Long, lpCreationTime As FILETIME, lpLastAccessTime As FILETIME, lpLastWriteTime As FILETIME) As Long
Private Declare Function SystemTimeToFileTime Lib "kernel32" (lpSystemTime As SYSTEMTIME, lpFileTime As FILETIME) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function LocalFileTimeToFileTime Lib "kernel32" (lpLocalFileTime As FILETIME, lpFileTime As FILETIME) As Long
Private Sub Form_Load()
'KPD-Team 1998
'URL: http://www.allapi.net/
'KPDTeam@Allapi.net
Dim m_Date As Date, lngHandle As Long
Dim udtFileTime As FILETIME
Dim udtLocalTime As FILETIME
Dim udtSystemTime As SYSTEMTIME
m_Date = Format(Now, "DD-MM-YY")

'Set the dialog's title
CDBox.DialogTitle = "Choose a file ..."
'Set the dialog's filter
CDBox.Filter = "All Files (*.*)|*.*"
'Show the 'Open File'-dialog
CDBox.ShowOpen

udtSystemTime.wYear = Year(m_Date)
udtSystemTime.wMonth = Month(m_Date)
udtSystemTime.wDay = Day(m_Date)
udtSystemTime.wDayOfWeek = WeekDay(m_Date) - 1
udtSystemTime.wHour = Hour(m_Date)
udtSystemTime.wMinute = Minute(m_Date)
udtSystemTime.wSecond = Second(m_Date)
udtSystemTime.wMilliseconds = 0

' convert system time to local time
SystemTimeToFileTime udtSystemTime, udtLocalTime
' convert local time to GMT
LocalFileTimeToFileTime udtLocalTime, udtFileTime
' open the file to get the filehandle
lngHandle = CreateFile(CDBox.Filename, GENERIC_WRITE, FILE_SHARE_READ Or FILE_SHARE_WRITE, ByVal 0&, OPEN_EXISTING, 0, 0)
' change date/time property of the file
SetFileTime lngHandle, udtFileTime, udtFileTime, udtFileTime
' close the handle
CloseHandle lngHandle
MsgBox "The date of the file '" + CDBox.Filename + "' has been changed to" + Str$(m_Date), vbInformation + vbOKOnly, App.Title
End Sub
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zhangxu421 2003-01-06
SetFileTime

VB声明
Declare Function SetFileTime Lib "kernel32" Alias "SetFileTime" (ByVal hFile As Long, lpCreationTime As FILETIME, lpLastAccessTime As FILETIME, lpLastWriteTime As FILETIME) As Long
说明
设置文件的创建、访问及上次修改时间
返回值
Long,非零表示成功,零表示失败。会设置GetLastError
参数表
参数 类型及说明
hFile Long,系统文件句柄
lpCreationTime FILETIME,文件的创建时间
lpLastAccessTime FILETIME,文件上一次访问的时间
lpLastWriteTime FILETIME,文件最近一次修改的时间



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