Update file timestamp

Is there a way to update the "last modified" attribute of a file without actually changing/copying the file contents?

Is there some dll that can be linked in that has a unix-like "touch" command?

'The Win32 API includes native functions that
'allow you To change a file's properties, such as time and date, without a
'third-party DLL.

Option Explicit
'
Private Type FILETIME
dwLowDate As Long
dwHighDate 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
wMillisecs As Integer
End Type

Private Const FILE_SHARE_READ = &H1
Private Const FILE_SHARE_WRITE = &H2
Private Const GENERIC_WRITE = &H40000000
Private Const OPEN_EXISTING = 3

Private Declare Function CloseHandle Lib "kernel32" _
(ByVal hObject As Long) As Long
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 LocalFileTimeToFileTime Lib _
"kernel32" (lpLocalFileTime As FILETIME, lpFileTime _
As FILETIME) As Long
Private Declare Function SetFileTime Lib "kernel32" _
(ByVal hFile As Long, ByVal MullP As Long, ByVal _
NullP2 As Long, lpLastWriteTime As FILETIME) As Long
Private Declare Function SystemTimeToFileTime Lib _
"kernel32" (lpSystemTime As SYSTEMTIME, lpFileTime _
As FILETIME) As Long

Sub Main()

Call SetFileDate("c:\autoexec.bat", "10/16/96 12:30 pm")

End Sub


Sub SetFileDate(sFileName As String, sDate As String)

Dim hFile As Long
Dim lResult As Long
Dim udtSysTime As SYSTEMTIME
Dim udtFileTime As FILETIME
Dim udtLocalTime As FILETIME

With udtSysTime
.wYear = Year(sDate)
.wMonth = Month(sDate)
.wDay = Day(sDate)
.wDayOfWeek = WeekDay(sDate) - 1
.wHour = Hour(sDate)
.wMinute = Minute(sDate)
.wSecond = Second(sDate)
End With

lResult = SystemTimeToFileTime(udtSysTime, _
udtLocalTime)
lResult = LocalFileTimeToFileTime(udtLocalTime, _
udtFileTime)

hFile = CreateFile(sFileName, GENERIC_WRITE, _
FILE_SHARE_READ _
Or FILE_SHARE_WRITE, ByVal 0&, OPEN_EXISTING, _
0, 0)

lResult = SetFileTime(hFile, ByVal 0&, ByVal 0&, _
udtFileTime)

Call CloseHandle(hFile)

End Sub



Iouri Boutchkine
[email protected]

Thank you!

I will try your solution.

rate it if it helped you

Iouri Boutchkine
[email protected]