Backowe [Gast] schrieb am 04.July.2009, 23:16:29 in der Kategorie pc.windows
\' zunächst die benötigten Deklarationen
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 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 CloseHandle Lib \"kernel32\" ( _
ByVal hObject As Long) As Long
Private Declare Function GetFileTime Lib \"kernel32\" ( _
ByVal hFile As Long, _
lpCreationTime As FileTime, _
lpLastAccessTime As FileTime, _
lpLastWriteTime As FileTime) 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 FileTimeToLocalFileTime Lib \"kernel32\" ( _
lpFileTime As FileTime, _
lpLocalFileTime As FileTime) As Long
Private Declare Function FileTimeToSystemTime Lib \"kernel32\" ( _
lpFileTime As FileTime, _
lpSystemTime As SYSTEMTIME) As Long
Private Declare Function SystemTimeToFileTime Lib \"kernel32\" ( _
lpSystemTime As SYSTEMTIME, _
lpFileTime As FileTime) As Long
Private Declare Function LocalFileTimeToFileTime Lib \"kernel32\" ( _
lpLocalFileTime As FileTime, _
lpFileTime As FileTime) As Long
Private Const GENERIC_READ = &H80000000
Private Const GENERIC_WRITE = &H40000000
Private Const OPEN_EXISTING = 3
\' Die beiden nachfolgenden Routinen werden zum
\' Lesen/Schreiben der Zeitangaben benötigt
Private Function ReadFileTime(ByVal sFilename As String, _
tCreation As Date, tLastAccess As Date, _
tLastWrite As Date) As Boolean
\'
\' *** Datum/Zeitwert einer Datei ermitteln
Dim fHandle As Long
Dim ftCreation As FileTime
Dim ftLastAccess As FileTime
Dim ftLastWrite As FileTime
Dim LocalFileTime As FileTime
Dim LocalSystemTime As SYSTEMTIME
ReadFileTime = False
fHandle = CreateFile(sFilename, GENERIC_READ, 0, 0, _
OPEN_EXISTING, 0, 0)
If fHandle <> 0 Then
\' Zeitinformationen auslesen
If GetFileTime(fHandle, ftCreation, ftLastAccess, _
ftLastWrite) <> 0 Then
\' Erstellungsdatum
FileTimeToLocalFileTime ftCreation, LocalFileTime
FileTimeToSystemTime LocalFileTime, LocalSystemTime
With LocalSystemTime
tCreation = CDate(Format$(.wDay) & \".\" & _
Format$(.wMonth) & \".\" & Format$(.wYear) & \" \" & _
Format$(.wHour) & \":\" & Format$(.wMinute, \"00\") & _
\":\" & Format$(.wSecond, \"00\"))
End With
\' Letzter Zugriff
FileTimeToLocalFileTime ftLastAccess, LocalFileTime
FileTimeToSystemTime LocalFileTime, LocalSystemTime
With LocalSystemTime
tLastAccess = CDate(Format$(.wDay) & \".\" & _
Format$(.wMonth) & \".\" & Format$(.wYear) & \" \" & _
Format$(.wHour) & \":\" & Format$(.wMinute, \"00\") & _
\":\" & Format$(.wSecond, \"00\"))
End With
\' Letzte Änderung
FileTimeToLocalFileTime ftLastWrite, LocalFileTime
FileTimeToSystemTime LocalFileTime, LocalSystemTime
With LocalSystemTime
tLastWrite = CDate(Format$(.wDay) & \".\" & _
Format$(.wMonth) & \".\" & Format$(.wYear) & \" \" & _
Format$(.wHour) & \":\" & Format$(.wMinute, \"00\") & _
\":\" & Format$(.wSecond, \"00\"))
End With
ReadFileTime = True
End If
CloseHandle fHandle
End If
End Function
Private Function WriteFileTime(ByVal sFilename As String, _
ByVal tCreation As Date, ByVal tLastAccess As Date, _
ByVal tLastWrite As Date) As Boolean
\'
\' *** Datum/Zeitwert einer Datei setzen
Dim fHandle As Long
Dim ftCreation As FileTime
Dim ftLastAccess As FileTime
Dim ftLastWrite As FileTime
Dim LocalFileTime As FileTime
Dim LocalSystemTime As SYSTEMTIME
WriteFileTime = False
fHandle = CreateFile(sFilename, GENERIC_WRITE, 0, _
0, OPEN_EXISTING, 0, 0)
If fHandle <> 0 Then
\' Erstellungsdatum
With LocalSystemTime
.wDay = Day(tCreation)
.wDayOfWeek = Weekday(tCreation)
.wMonth = Month(tCreation)
.wYear = Year(tCreation)
.wHour = Hour(tCreation)
.wMinute = Minute(tCreation)
.wSecond = Second(tCreation)
End With
SystemTimeToFileTime LocalSystemTime, LocalFileTime
LocalFileTimeToFileTime LocalFileTime, ftCreation
\' Letzter Zugriff
With LocalSystemTime
.wDay = Day(tLastAccess)
.wDayOfWeek = Weekday(tLastAccess)
.wMonth = Month(tLastAccess)
.wYear = Year(tLastAccess)
.wHour = Hour(tLastAccess)
.wMinute = Minute(tLastAccess)
.wSecond = Second(tLastAccess)
End With
SystemTimeToFileTime LocalSystemTime, LocalFileTime
LocalFileTimeToFileTime LocalFileTime, ftLastAccess
\' Letzte Änderung
With LocalSystemTime
.wDay = Day(tLastWrite)
.wDayOfWeek = Weekday(tLastWrite)
.wMonth = Month(tLastWrite)
.wYear = Year(tLastWrite)
.wHour = Hour(tLastWrite)
.wMinute = Minute(tLastWrite)
.wSecond = Second(tLastWrite)
End With
SystemTimeToFileTime LocalSystemTime, LocalFileTime
LocalFileTimeToFileTime LocalFileTime, ftLastWrite
If SetFileTime(fHandle, ftCreation, ftLastAccess, _
ftLastWrite) <> 0 Then
WriteFileTime = True
End If
CloseHandle fHandle
End If
End Function
Sub DateiAendern()
Dim tCreation As Date \' Erstellt am
Dim tLastAccess As Date \' Letzter Zugriff
Dim tLastWrite As Date \' Letzte Änderung
Dim Datei As String
Datei = \"j:\\01.jpg\"
\' Zeitangaben lesen
If ReadFileTime(Datei, tCreation, tLastAccess, tLastWrite) Then
\' Erstellungsdatum ändern
tCreation = CDate(\"01.11.2000 17:35:41\")
\' Datum \"Letzter Zugriff\" ändern
tLastAccess = CDate(\"01.11.2000 17:35:41\")
\' Datum \"Letzter Änderung\" ändern
tLastWrite = CDate(\"01.11.2000 17:35:41\")
\' Zeitangaben setzen
WriteFileTime Datei, tCreation, tLastAccess, tLastWrite
End If
End Sub