X64 Declare Function Problem

Hallo Nepumuk,
zunächst herzlichen Dank für Deine Hilfe. Die Declare Aufrufe habe ich nach Deinen Vorgaben geändert. Leider funktioniert es aber immer noch nicht. Da Du bereits bzgl. WSAData Struktur Vermutungen hast erlaube ich mir den kompletten Code zu posten, evtl kannst Du mir ja nochmals helfen:

' ###################################################################################
' ### Constants and Type Definitions
Private Const MIN_SOCKETS_REQD As Long = 1
Private Const WS_VERSION_REQD As Long = &H101
Private Const WS_VERSION_MAJOR As Long = WS_VERSION_REQD \ &H100 And &HFF&
Private Const WS_VERSION_MINOR As Long = WS_VERSION_REQD And &HFF&
Private Const SOCKET_ERROR As Long = -1
Private Const WSADESCRIPTION_LEN = 257
Private Const WSASYS_STATUS_LEN = 129
Private Const MAX_WSADescription = 256
Private Const MAX_WSASYSStatus = 128
Private Type WSAData
wVersion As Integer
wHighVersion As Integer
szDescription(0 To MAX_WSADescription) As Byte
szSystemStatus(0 To MAX_WSASYSStatus) As Byte
wMaxSockets As Integer
wMaxUDPDG As Integer
dwVendorInfo As Long
End Type
' ### WINSOCK Native Function Imports
Private Declare PtrSafe Function WSACleanup Lib "wsock32.dll" () As Long
Private Declare PtrSafe Function WSAStartup Lib "wsock32.dll" ( _
ByVal wVersionRequired As Long, _
ByRef lpWSADATA As WSAData) As Long
Private Declare PtrSafe Function gethostbyaddr Lib "wsock32.dll" ( _
ByRef haddr As LongPtr, _
ByVal hnlen As Long, _
ByVal addrtype As Long) As LongPtr
Private Declare PtrSafe Function inet_addr Lib "wsock32.dll" ( _
ByVal cp As String) As LongLong
Private Declare PtrSafe Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" ( _
ByRef Destination As Any, _
ByRef Source As Any, _
ByVal Length As LongPtr)
Private Declare PtrSafe Function lstrlen Lib "kernel32" Alias "lstrlenA" ( _
ByVal lpString As String) As Long
' ### Private Utility Functions
Private Function HiByte(ByVal wParam As Integer)
HiByte = wParam \ &H100 And &HFF&
End Function
Private Function LoByte(ByVal wParam As Integer)
LoByte = wParam And &HFF&
End Function
Private Sub SocketsCleanup()
If WSACleanup()  ERROR_SUCCESS Then
MsgBox "Socket error occurred in Cleanup."
End If
End Sub
Private Function SocketsInitialize() As Boolean
Dim WSAD As WSAData
Dim sLoByte As String
Dim sHiByte As String
If WSAStartup(WS_VERSION_REQD, WSAD)  ERROR_SUCCESS Then
MsgBox "The 32-bit Windows Socket is not responding."
SocketsInitialize = False
Exit Function
End If
If WSAD.wMaxSockets  0 Then
CopyMemory lRet, ByVal lRet, 4
lLength = lstrlenA(lRet)
If lLength > 0 Then
GetHostName = Space$(lLength)
CopyMemory ByVal GetHostName, ByVal lRet, lLength
End If
Else
GetHostName = ""
End If
SocketsCleanup
End Function

Der Fehler tritt in der 13 Zeile von unten auf:
lRet = gethostbyaddr(inet_addr(Address), 4, AF_INET)
--> Typen unverträglich
Besten Dank
LG

Hallo,
hast du schon versucht die Fehlermeldung der DLL anzuzeigen? So nach dem Muster:

Option Explicit

Private Declare PtrSafe Function FormatMessageA Lib "kernel32.dll" ( _
    ByVal dwFlags As Long, _
    ByRef lpSource As Any, _
    ByVal dwMessageId As Long, _
    ByVal dwLanguageId As Long, _
    ByVal lpBuffer As String, _
    ByVal nSize As Long, _
    ByRef Arguments As LongPtr) As Long
Private Declare PtrSafe Function GetLastError Lib "kernel32.dll" () As Long

Private Const LANG_NEUTRAL As Long = &H0
Private Const ERROR_BUFFER As Long = &HC8
Private Const FORMAT_MESSAGE_FROM_SYSTEM As Long = &H1000

Sub test()

    Dim strBuffer As String
    strBuffer = Space$(ERROR_BUFFER)
    Call FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, ByVal 0&, GetLastError, _
        LANG_NEUTRAL, strBuffer, ERROR_BUFFER, ByVal CLngPtr(0))
    MsgBox strBuffer

End Sub

Du liest den Rückgabewert der DLL und wenn der z.B. 0 zurück gibt dann den Fehler auslesen. Google mal nach den Namen der Funktion und schau in der MSDN-Library nach was die Funktion für Rückgabewerte haben kann.
Gruß
Nepumuk

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