我怎样才能让从Microsoft Access使用Visual Basic的网络连接？(How ca

我们有Microsoft Access内部的Visual Basic应用程序，我们需要进行网络连接。随着VB6，有一个方便的小控件调用的WinSock，使得这有可能，但我无法找到该Microsoft Access中的内部存在的精简版VB类似的事情。有任何想法吗？

因为我没有得到任何答案，我会尽力澄清什么，我需要这个。

我的应用程序发送一封电子邮件，我们目前正在使用一个内置的Outlook对象创建消息并在后台发送。其缺点是，它会提示用户批准的“计划外”发送一封电子邮件，这是令人沮丧的我们的用户，似乎没有必要。所有的其他电子邮件选项我已经能够在网上找到需要我们下载或购买的控制，这将是过于劳动密集为我们部署到所有的用户。

我希望用一个插座控制手动连接到SMTP服务器和发送邮件（因为这是在其他语言平凡的），但我无法找到任何方式使VBA TCP连接。

Answer 1:

我只是处理了在上个月就此问题。由于种种原因，CDO是不够的，直接使用MAPI方式太复杂，和Outlook提示你抱怨完全不能接受的。

我结束了使用Outlook中的救赎。它广泛地被访问开发人员使用，但我发现它是颇为曲折，而不是非常良好的记录。但它做的工作非常好。

Answer 2:

电子邮件“安全”功能，通过微软增加了沮丧许多开发商。我不知道一个优雅的解决方案。我已经使用了免费的应用程序ClickYes成功快速，但当然这不是你寻求答案。

Answer 3:

对于在OP提到的具体问题，有一个更好的解决方案。邮件“保存”到Outlook。不要“送”了。它给出了发送什么用户明确的控制，当，并且不会产生弹出对话框。三赢。

但既然你问....

Option Explicit

Public Const AF_INET = 2 'internetwork: UDP, TCP, etc.
Public Const SOCK_STREAM = 1 'Stream socket
Public Const SOCKET_ERROR = -1

Type sockaddr_in
    sin_family As Integer
    sin_port As Integer
    sin_addr As Long
    sin_zero As String * 8
End Type

#If Win32 Then

'for WSAStartup() function.
Public Const WSADESCRIPTION_LEN = 256
Public Const WSASYS_STATUS_LEN = 128
Public Const WSA_DescriptionSize = WSADESCRIPTION_LEN + 1
Public Const WSA_SysStatusSize = WSASYS_STATUS_LEN + 1

Type wsaData
    wVersion As Integer
    wHighVersion As Integer
    szDescription As String * WSA_DescriptionSize
    szSystemStatus As String * WSA_SysStatusSize
    iMaxSockets As Integer
    iMaxUdpDg As Integer
    lpVendorInfo As String * 200
End Type

#If Not VBA7 Then
'Use this section for Excel 95
Type Hostent
    h_name As Long          '32 bit pointer
    h_aliases As Long       '32 bit pointer
    h_addrtype As Integer   'String * 2 (declared as short)
    h_length As Integer     'String * 2 (declared as short)
    h_addr_list As Long     '32 bit pointer
End Type

Public Declare Function closesocket Lib "ws2_32.dll" (ByVal s As Long) As Long
Public Declare Function connect Lib "ws2_32.dll" (ByVal sID As Long, ByRef name As sockaddr_in, ByVal namelen As Long) As Long
Public Declare Function htons Lib "ws2_32.dll" (ByVal hostshort As Integer) As Integer
Public Declare Function inet_addr Lib "ws2_32.dll" (ByVal cp As String) As Long
Public Declare Function recv Lib "ws2_32.dll" (ByVal s As Long, ByRef buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function recvstr Lib "ws2_32.dll" (ByVal s As Long, ByVal buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function send Lib "ws2_32.dll" (ByVal s As Long, ByRef buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function socket Lib "ws2_32.dll" (ByVal af As Long, ByVal s_type As Long, ByVal Protocol As Long) As Long
Public Declare Function WSAStartup Lib "ws2_32.dll" (wVersionRequested As Integer, lpWSAData As wsaData) As Long
Public Declare Function WSACleanup Lib "ws2_32.dll" () As Long

'Public Declare Function setsockopt Lib "ws2_32.dll" (ByVal s As Long, ByVal level As Long, ByVal optname As Long, optval As Any, ByVal optlen As Long) As Long
Public Declare Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" (ByRef Destination As Any, ByRef Source As Any, ByVal Length As Long)
Public Declare Function gethostbyname Lib "ws2_32.dll" (ByVal host_name As String) As Long

#Else
'on Win64, ws2_32.dll in system32 has the file description "32-bit DLL" and uses 64bit pointers (morons)
'on Win64 as on Win32, 32-bit numbers are called int.
'on VBA7/64, as on VBA6/32, 32 bit numbers are called long.
'delete following duplicate section for Excel 95

Type Hostent
    h_name As LongPtr       '32/64 bit pointer
    h_aliases As LongPtr    '32/64 bit pointer
    h_addrtype As Integer   'String * 2 (declared as short)
    h_length As Integer     'String * 2 (declared as short)
    h_addr_list As LongPtr  '32/64 bit pointer
End Type


Public Declare PtrSafe Function closesocket Lib "ws2_32.dll" (ByVal sID As LongPtr) As Long
Public Declare PtrSafe Function connect Lib "ws2_32.dll" (ByVal sID As LongPtr, ByRef name As sockaddr_in, ByVal namelen As Long) As Long
Public Declare PtrSafe Function htons Lib "ws2_32.dll" (ByVal hostshort As Integer) As Integer
Public Declare PtrSafe Function inet_addr Lib "ws2_32.dll" (ByVal cp As String) As Long
Public Declare PtrSafe Function recv Lib "ws2_32.dll" (ByVal sID As LongPtr, ByRef buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare PtrSafe Function recvstr Lib "ws2_32.dll" (ByVal sID As LongPtr, ByVal buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare PtrSafe Function send Lib "ws2_32.dll" (ByVal sID As LongPtr, ByRef buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare PtrSafe Function socket Lib "ws2_32.dll" (ByVal af As Long, ByVal s_type As Long, ByVal Protocol As Long) As Long
Public Declare PtrSafe Function WSAStartup Lib "ws2_32.dll" (wVersionRequested As Integer, lpWSAData As wsaData) As Long
Public Declare PtrSafe Function WSACleanup Lib "ws2_32.dll" () As Long

'Public Declare PtrSafe Function setsockopt Lib "ws2_32.dll" (ByVal sID As Long, ByVal level As LongPtr, ByVal optname As Long, optval As Any, ByVal optlen As Long) As Long
Public Declare PtrSafe Sub CopyMemory Lib "kernel32.dll" Alias "RtlMoveMemory" (ByRef Destination As Any, ByRef Source As Any, ByVal Length As LongPtr)
Public Declare PtrSafe Function gethostbyname Lib "ws2_32.dll" (ByVal host_name As String) As LongPtr


#End If
#Else
'OSX
'delete following duplicate section for Excel 95
'No 64bit version of Excel is available yet for the OSX
Type Hostent
    h_name As Long      '32 bit pointer
    h_aliases As Long   '32 bit pointer
    h_addrtype As Long  '32 bit int (declared as int)
    h_length As Long    '32 bit int (declared as int)
    h_addr_list As Long '32 bit pointer
End Type

'ssize_t is a signed type. signed version of size_t,
'used where a size may instead contain a negative error code
'size_t is the unsigned integer type of the result of the sizeof operator
'size_t is an unsigned integer type of at least 16 bit

'or libsystem.dylib ?
Public Declare Function socket Lib "libc.dylib" (ByVal af As Long, ByVal s_type As Long, ByVal Protocol As Long) As Long
Public Declare Function connect Lib "libc.dylib" (ByVal s As Long, ByRef name As sockaddr_in, ByVal namelen As Long) As Long
' or read ?
Public Declare Function recv Lib "libc.dylib" (ByVal s As Long, buf As   Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function send Lib "libc.dylib" (ByVal s As Long, buf As Any, ByVal buflen As Long, ByVal flags As Long) As Long
Public Declare Function htons Lib "libc.dylib" (ByVal Host_Short As Integer) As Integer 'x x x, but seems to work !!!
Public Declare Function inet_addr Lib "libc.dylib" (ByVal cp As String) As Long
Public Declare Function closesocket Lib "libc.dylib" Alias "close" (ByVal s As Long) As Long
Public Declare Function setsockopt Lib "libc.dylib" (ByVal s As Long, ByVal level As Long, ByVal optname As Long, optval As Any, ByVal optlen As Long) As Long
Public Declare Function gethostbyname Lib "libc.dylib" (ByVal host_name As String) As Long
Public Declare Sub CopyMemory Lib "libc.dylib" Alias "memmove" (ByRef Destination As Any, ByRef Source As Any, ByVal Length As Long)

#End If

Private Function MyData(I_SocketAddress As sockaddr_in, Register As Integer, dataword As Long, serr As String) As Long
Dim strSend     As String
Dim count       As Integer
Dim bArray()    As Byte
Dim errCode     As Integer
Dim socketID    As Long

socketID = socket(AF_INET, SOCK_STREAM, 0)
errCode = connect(socketID, I_SocketAddress, Len(I_SocketAddress))

count = send(socketID, ByVal strSend, Len(strSend), 0)

If count <> Len(strSend) Then
    errCode = -1
    serr = "ERROR: network failure on send, " & Err.LastDllError()
Else
    count = RecvB(socketID, bArray, maxLength)

    dodata bArray
End If
    DoEvents
    Call closesocket(socketID)
    MyData = errCode
End Function

Private Function RecvB(socketID As Long, bArray() As Byte, ByVal maxLength As Integer) As Integer
Dim c As String * 1
Dim b           As Byte
Dim buf()       As Byte
Dim Length      As Integer
Dim count       As Long
Dim i           As Integer
Dim dStartTime  As Variant
Dim nErr        As Long

Const iFlags = 0

ReDim bArray(1 To maxLength)
ReDim buf(1 To maxLength)

dStartTime = Time
While (Length < maxLength) And (4 > DateDiff("s", dStartTime, Time))
    DoEvents
    count = recv(socketID, buf(1), maxLength, iFlags)

    If count = SOCKET_ERROR Then '-1
        nErr = Err.LastDllError()
        If nErr = 0 Then
            RecvB = -1
        Else
            RecvB = -nErr
        End If
        'Debug.Print "socket_error in RecvB. lastdllerror:", nErr
        Exit Function '
    End If '
    For i = 1 To count
        bArray(Length + i) = buf(i)
    Next
    Length = Length + count
Wend
RecvB = Length

End Function

这是TCP代码，而不是电子邮件的代码。它也包括OSX VBA代码TCP，这是我以前没有公布。