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分享FtpFindFirstFile，为什么这个函数在类模块中会出错而且是整个VB程序都退出了，而在其它地方是好的
FtpFindFirstFile，为什么这个函数在类模块中会出错而且是整个VB程序都退出了，而在其它地方是好的，请请问高手是为什么，在什么情况下该函数会出错，而且使整个vb都退出了
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online 2003-11-25
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我这个是好的,太长了
需要这个源码的。请留下email
Private Sub cmdConnect_Click()
If Not bActiveSession And hOpen <> 0 Then
If txtServer.Text = "" Then
MsgBox "Please enter a server name!"
Exit Sub
End If
Dim nFlag As Long
If chkPassive.Value Then
nFlag = INTERNET_FLAG_PASSIVE
Else
nFlag = 0
End If
hConnection = InternetConnect(hOpen, txtServer.Text, INTERNET_INVALID_PORT_NUMBER, _
txtUser, txtPassword, INTERNET_SERVICE_FTP, nFlag, 0)
If hConnection = 0 Then
bActiveSession = False
ErrorOut Err.LastDllError, "InternetConnect"
Else
bActiveSession = True
EnableUI (CBool(hOpen))
FillTreeViewControl (txtServer.Text)
FtpEnumDirectory ("")
If EnumItemNameBag.Count = 0 Then Exit Sub
FillTreeViewControl (txtServer.Text)
End If
End If
End Sub
Private Sub FtpEnumDirectory(strDirectory As String)
ClearBag
Dim hFind As Long
Dim nLastError As Long
Dim dError As Long
Dim ptr As Long
Dim pData As WIN32_FIND_DATA
If Len(strDirectory) > 0 Then rcd (strDirectory)
pData.cFileName = String(MAX_PATH, 0)
hFind = FtpFindFirstFile(hConnection, "*.*", pData, 0, 0)
nLastError = Err.LastDllError
If hFind = 0 Then
If (nLastError = ERROR_NO_MORE_FILES) Then
MsgBox "This directory is empty!"
Else
ErrorOut nLastError, "FtpFindFirstFile"
End If
Exit Sub
End If
dError = NO_ERROR
Dim bRet As Boolean
Dim strItemName As String
EnumItemAttributeBag.Add pData.dwFileAttributes
strItemName = Left(pData.cFileName, InStr(1, pData.cFileName, String(1, 0), vbBinaryCompare) - 1)
EnumItemNameBag.Add strItemName
Do
pData.cFileName = String(MAX_PATH, 0)
bRet = InternetFindNextFile(hFind, pData)
If Not bRet Then
dError = Err.LastDllError
If dError = ERROR_NO_MORE_FILES Then
Exit Do
Else
ErrorOut dError, "InternetFindNextFile"
InternetCloseHandle (hFind)
Exit Sub
End If
Else
EnumItemAttributeBag.Add pData.dwFileAttributes
strItemName = Left(pData.cFileName, InStr(1, pData.cFileName, String(1, 0), vbBinaryCompare) - 1)
EnumItemNameBag.Add strItemName
End If
Loop
InternetCloseHandle (hFind)
End Sub
需要这个源码的。请留下email
Private Sub cmdConnect_Click()
If Not bActiveSession And hOpen <> 0 Then
If txtServer.Text = "" Then
MsgBox "Please enter a server name!"
Exit Sub
End If
Dim nFlag As Long
If chkPassive.Value Then
nFlag = INTERNET_FLAG_PASSIVE
Else
nFlag = 0
End If
hConnection = InternetConnect(hOpen, txtServer.Text, INTERNET_INVALID_PORT_NUMBER, _
txtUser, txtPassword, INTERNET_SERVICE_FTP, nFlag, 0)
If hConnection = 0 Then
bActiveSession = False
ErrorOut Err.LastDllError, "InternetConnect"
Else
bActiveSession = True
EnableUI (CBool(hOpen))
FillTreeViewControl (txtServer.Text)
FtpEnumDirectory ("")
If EnumItemNameBag.Count = 0 Then Exit Sub
FillTreeViewControl (txtServer.Text)
End If
End If
End Sub
Private Sub FtpEnumDirectory(strDirectory As String)
ClearBag
Dim hFind As Long
Dim nLastError As Long
Dim dError As Long
Dim ptr As Long
Dim pData As WIN32_FIND_DATA
If Len(strDirectory) > 0 Then rcd (strDirectory)
pData.cFileName = String(MAX_PATH, 0)
hFind = FtpFindFirstFile(hConnection, "*.*", pData, 0, 0)
nLastError = Err.LastDllError
If hFind = 0 Then
If (nLastError = ERROR_NO_MORE_FILES) Then
MsgBox "This directory is empty!"
Else
ErrorOut nLastError, "FtpFindFirstFile"
End If
Exit Sub
End If
dError = NO_ERROR
Dim bRet As Boolean
Dim strItemName As String
EnumItemAttributeBag.Add pData.dwFileAttributes
strItemName = Left(pData.cFileName, InStr(1, pData.cFileName, String(1, 0), vbBinaryCompare) - 1)
EnumItemNameBag.Add strItemName
Do
pData.cFileName = String(MAX_PATH, 0)
bRet = InternetFindNextFile(hFind, pData)
If Not bRet Then
dError = Err.LastDllError
If dError = ERROR_NO_MORE_FILES Then
Exit Do
Else
ErrorOut dError, "InternetFindNextFile"
InternetCloseHandle (hFind)
Exit Sub
End If
Else
EnumItemAttributeBag.Add pData.dwFileAttributes
strItemName = Left(pData.cFileName, InStr(1, pData.cFileName, String(1, 0), vbBinaryCompare) - 1)
EnumItemNameBag.Add strItemName
End If
Loop
InternetCloseHandle (hFind)
End Sub
rainstormmaster 2003-11-24
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'续上
' Opens a HTTP session for a given site.
Public Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
(ByVal hInternetSession As Long, ByVal sServerName As String, ByVal nServerPort As Integer, _
ByVal sUsername As String, ByVal sPassword As String, ByVal lService As Long, _
ByVal lFlags As Long, ByVal lContext As Long) As Long
Public Const ERROR_INTERNET_EXTENDED_ERROR = 12003
Public Declare Function InternetGetLastResponseInfo Lib "wininet.dll" Alias "InternetGetLastResponseInfoA" ( _
lpdwError As Long, _
ByVal lpszBuffer As String, _
lpdwBufferLength As Long) As Boolean
' Number of the TCP/IP port on the server to connect to.
Public Const INTERNET_DEFAULT_FTP_PORT = 21
Public Const INTERNET_DEFAULT_GOPHER_PORT = 70
Public Const INTERNET_DEFAULT_HTTP_PORT = 80
Public Const INTERNET_DEFAULT_HTTPS_PORT = 443
Public Const INTERNET_DEFAULT_SOCKS_PORT = 1080
Public Const INTERNET_OPTION_CONNECT_TIMEOUT = 2
Public Const INTERNET_OPTION_RECEIVE_TIMEOUT = 6
Public Const INTERNET_OPTION_SEND_TIMEOUT = 5
Public Const INTERNET_OPTION_USERNAME = 28
Public Const INTERNET_OPTION_PASSWORD = 29
Public Const INTERNET_OPTION_PROXY_USERNAME = 43
Public Const INTERNET_OPTION_PROXY_PASSWORD = 44
' Type of service to access.
Public Const INTERNET_SERVICE_FTP = 1
Public Const INTERNET_SERVICE_GOPHER = 2
Public Const INTERNET_SERVICE_HTTP = 3
' Opens an HTTP request handle.
Public Declare Function HttpOpenRequest Lib "wininet.dll" Alias "HttpOpenRequestA" _
(ByVal hHttpSession As Long, ByVal sVerb As String, ByVal sObjectName As String, ByVal sVersion As String, _
ByVal sReferer As String, ByVal something As Long, ByVal lFlags As Long, ByVal lContext As Long) As Long
' Brings the data across the wire even if it locally cached.
Public Const INTERNET_FLAG_RELOAD = &H80000000
Public Const INTERNET_FLAG_KEEP_CONNECTION = &H400000
Public Const INTERNET_FLAG_MULTIPART = &H200000
Public Const GENERIC_READ = &H80000000
Public Const GENERIC_WRITE = &H40000000
' Sends the specified request to the HTTP server.
Public Declare Function HttpSendRequest Lib "wininet.dll" Alias "HttpSendRequestA" (ByVal _
hHttpRequest As Long, ByVal sHeaders As String, ByVal lHeadersLength As Long, ByVal sOptional As _
String, ByVal lOptionalLength As Long) As Integer
' Queries for information about an HTTP request.
Public Declare Function HttpQueryInfo Lib "wininet.dll" Alias "HttpQueryInfoA" _
(ByVal hHttpRequest As Long, ByVal lInfoLevel As Long, ByRef sBuffer As Any, _
ByRef lBufferLength As Long, ByRef lIndex As Long) As Integer
' The possible values for the lInfoLevel parameter include:
Public Const HTTP_QUERY_CONTENT_TYPE = 1
Public Const HTTP_QUERY_CONTENT_LENGTH = 5
Public Const HTTP_QUERY_EXPIRES = 10
Public Const HTTP_QUERY_LAST_MODIFIED = 11
Public Const HTTP_QUERY_PRAGMA = 17
Public Const HTTP_QUERY_VERSION = 18
Public Const HTTP_QUERY_STATUS_CODE = 19
Public Const HTTP_QUERY_STATUS_TEXT = 20
Public Const HTTP_QUERY_RAW_HEADERS = 21
Public Const HTTP_QUERY_RAW_HEADERS_CRLF = 22
Public Const HTTP_QUERY_FORWARDED = 30
Public Const HTTP_QUERY_SERVER = 37
Public Const HTTP_QUERY_USER_AGENT = 39
Public Const HTTP_QUERY_SET_COOKIE = 43
Public Const HTTP_QUERY_REQUEST_METHOD = 45
Public Const HTTP_STATUS_DENIED = 401
Public Const HTTP_STATUS_PROXY_AUTH_REQ = 407
' Add this flag to the about flags to get request header.
Public Const HTTP_QUERY_FLAG_REQUEST_HEADERS = &H80000000
Public Const HTTP_QUERY_FLAG_NUMBER = &H20000000
' Reads data from a handle opened by the HttpOpenRequest function.
Public Declare Function InternetReadFile Lib "wininet.dll" _
(ByVal hFile As Long, ByVal sBuffer As String, ByVal lNumBytesToRead As Long, _
lNumberOfBytesRead As Long) As Integer
Public Declare Function InternetWriteFile Lib "wininet.dll" _
(ByVal hFile As Long, ByVal sBuffer As String, _
ByVal lNumberOfBytesToRead As Long, _
lNumberOfBytesRead As Long) As Integer
Public Declare Function FtpOpenFile Lib "wininet.dll" Alias _
"FtpOpenFileA" (ByVal hFtpSession As Long, _
ByVal sFileName As String, ByVal lAccess As Long, _
ByVal lFlags As Long, ByVal lContext As Long) As Long
Public Declare Function FtpDeleteFile Lib "wininet.dll" _
Alias "FtpDeleteFileA" (ByVal hFtpSession As Long, _
ByVal lpszFileName As String) As Boolean
Public Declare Function InternetSetOption Lib "wininet.dll" Alias "InternetSetOptionA" _
(ByVal hInternet As Long, ByVal lOption As Long, ByRef sBuffer As Any, ByVal lBufferLength As Long) As Integer
Public Declare Function InternetSetOptionStr Lib "wininet.dll" Alias "InternetSetOptionA" _
(ByVal hInternet As Long, ByVal lOption As Long, ByVal sBuffer As String, ByVal lBufferLength As Long) As Integer
' Closes a single Internet handle or a subtree of Internet handles.
Public Declare Function InternetCloseHandle Lib "wininet.dll" _
(ByVal hInet As Long) As Integer
' Queries an Internet option on the specified handle
Public Declare Function InternetQueryOption Lib "wininet.dll" Alias "InternetQueryOptionA" _
(ByVal hInternet As Long, ByVal lOption As Long, ByRef sBuffer As Any, ByRef lBufferLength As Long) As Integer
' Returns the version number of Wininet.dll.
Public Const INTERNET_OPTION_VERSION = 40
' Contains the version number of the DLL that contains the Windows Internet
' functions (Wininet.dll). This structure is used when passing the
' INTERNET_OPTION_VERSION flag to the InternetQueryOption function.
Public Type tWinInetDLLVersion
lMajorVersion As Long
lMinorVersion As Long
End Type
' Adds one or more HTTP request headers to the HTTP request handle.
Public Declare Function HttpAddRequestHeaders Lib "wininet.dll" Alias "HttpAddRequestHeadersA" _
(ByVal hHttpRequest As Long, ByVal sHeaders As String, ByVal lHeadersLength As Long, _
ByVal lModifiers As Long) As Integer
' Flags to modify the semantics of this function. Can be a combination of these values:
' Adds the header only if it does not already exist; otherwise, an error is returned.
Public Const HTTP_ADDREQ_FLAG_ADD_IF_NEW = &H10000000
' Adds the header if it does not exist. Used with REPLACE.
Public Const HTTP_ADDREQ_FLAG_ADD = &H20000000
' Replaces or removes a header. If the header value is empty and the header is found,
' it is removed. If not empty, the header value is replaced
Public Const HTTP_ADDREQ_FLAG_REPLACE = &H80000000
---------------------------------------------
以上是基于ftp下载图片的代码，当然也可以下载其他的文件，希望对你有帮助
' Opens a HTTP session for a given site.
Public Declare Function InternetConnect Lib "wininet.dll" Alias "InternetConnectA" _
(ByVal hInternetSession As Long, ByVal sServerName As String, ByVal nServerPort As Integer, _
ByVal sUsername As String, ByVal sPassword As String, ByVal lService As Long, _
ByVal lFlags As Long, ByVal lContext As Long) As Long
Public Const ERROR_INTERNET_EXTENDED_ERROR = 12003
Public Declare Function InternetGetLastResponseInfo Lib "wininet.dll" Alias "InternetGetLastResponseInfoA" ( _
lpdwError As Long, _
ByVal lpszBuffer As String, _
lpdwBufferLength As Long) As Boolean
' Number of the TCP/IP port on the server to connect to.
Public Const INTERNET_DEFAULT_FTP_PORT = 21
Public Const INTERNET_DEFAULT_GOPHER_PORT = 70
Public Const INTERNET_DEFAULT_HTTP_PORT = 80
Public Const INTERNET_DEFAULT_HTTPS_PORT = 443
Public Const INTERNET_DEFAULT_SOCKS_PORT = 1080
Public Const INTERNET_OPTION_CONNECT_TIMEOUT = 2
Public Const INTERNET_OPTION_RECEIVE_TIMEOUT = 6
Public Const INTERNET_OPTION_SEND_TIMEOUT = 5
Public Const INTERNET_OPTION_USERNAME = 28
Public Const INTERNET_OPTION_PASSWORD = 29
Public Const INTERNET_OPTION_PROXY_USERNAME = 43
Public Const INTERNET_OPTION_PROXY_PASSWORD = 44
' Type of service to access.
Public Const INTERNET_SERVICE_FTP = 1
Public Const INTERNET_SERVICE_GOPHER = 2
Public Const INTERNET_SERVICE_HTTP = 3
' Opens an HTTP request handle.
Public Declare Function HttpOpenRequest Lib "wininet.dll" Alias "HttpOpenRequestA" _
(ByVal hHttpSession As Long, ByVal sVerb As String, ByVal sObjectName As String, ByVal sVersion As String, _
ByVal sReferer As String, ByVal something As Long, ByVal lFlags As Long, ByVal lContext As Long) As Long
' Brings the data across the wire even if it locally cached.
Public Const INTERNET_FLAG_RELOAD = &H80000000
Public Const INTERNET_FLAG_KEEP_CONNECTION = &H400000
Public Const INTERNET_FLAG_MULTIPART = &H200000
Public Const GENERIC_READ = &H80000000
Public Const GENERIC_WRITE = &H40000000
' Sends the specified request to the HTTP server.
Public Declare Function HttpSendRequest Lib "wininet.dll" Alias "HttpSendRequestA" (ByVal _
hHttpRequest As Long, ByVal sHeaders As String, ByVal lHeadersLength As Long, ByVal sOptional As _
String, ByVal lOptionalLength As Long) As Integer
' Queries for information about an HTTP request.
Public Declare Function HttpQueryInfo Lib "wininet.dll" Alias "HttpQueryInfoA" _
(ByVal hHttpRequest As Long, ByVal lInfoLevel As Long, ByRef sBuffer As Any, _
ByRef lBufferLength As Long, ByRef lIndex As Long) As Integer
' The possible values for the lInfoLevel parameter include:
Public Const HTTP_QUERY_CONTENT_TYPE = 1
Public Const HTTP_QUERY_CONTENT_LENGTH = 5
Public Const HTTP_QUERY_EXPIRES = 10
Public Const HTTP_QUERY_LAST_MODIFIED = 11
Public Const HTTP_QUERY_PRAGMA = 17
Public Const HTTP_QUERY_VERSION = 18
Public Const HTTP_QUERY_STATUS_CODE = 19
Public Const HTTP_QUERY_STATUS_TEXT = 20
Public Const HTTP_QUERY_RAW_HEADERS = 21
Public Const HTTP_QUERY_RAW_HEADERS_CRLF = 22
Public Const HTTP_QUERY_FORWARDED = 30
Public Const HTTP_QUERY_SERVER = 37
Public Const HTTP_QUERY_USER_AGENT = 39
Public Const HTTP_QUERY_SET_COOKIE = 43
Public Const HTTP_QUERY_REQUEST_METHOD = 45
Public Const HTTP_STATUS_DENIED = 401
Public Const HTTP_STATUS_PROXY_AUTH_REQ = 407
' Add this flag to the about flags to get request header.
Public Const HTTP_QUERY_FLAG_REQUEST_HEADERS = &H80000000
Public Const HTTP_QUERY_FLAG_NUMBER = &H20000000
' Reads data from a handle opened by the HttpOpenRequest function.
Public Declare Function InternetReadFile Lib "wininet.dll" _
(ByVal hFile As Long, ByVal sBuffer As String, ByVal lNumBytesToRead As Long, _
lNumberOfBytesRead As Long) As Integer
Public Declare Function InternetWriteFile Lib "wininet.dll" _
(ByVal hFile As Long, ByVal sBuffer As String, _
ByVal lNumberOfBytesToRead As Long, _
lNumberOfBytesRead As Long) As Integer
Public Declare Function FtpOpenFile Lib "wininet.dll" Alias _
"FtpOpenFileA" (ByVal hFtpSession As Long, _
ByVal sFileName As String, ByVal lAccess As Long, _
ByVal lFlags As Long, ByVal lContext As Long) As Long
Public Declare Function FtpDeleteFile Lib "wininet.dll" _
Alias "FtpDeleteFileA" (ByVal hFtpSession As Long, _
ByVal lpszFileName As String) As Boolean
Public Declare Function InternetSetOption Lib "wininet.dll" Alias "InternetSetOptionA" _
(ByVal hInternet As Long, ByVal lOption As Long, ByRef sBuffer As Any, ByVal lBufferLength As Long) As Integer
Public Declare Function InternetSetOptionStr Lib "wininet.dll" Alias "InternetSetOptionA" _
(ByVal hInternet As Long, ByVal lOption As Long, ByVal sBuffer As String, ByVal lBufferLength As Long) As Integer
' Closes a single Internet handle or a subtree of Internet handles.
Public Declare Function InternetCloseHandle Lib "wininet.dll" _
(ByVal hInet As Long) As Integer
' Queries an Internet option on the specified handle
Public Declare Function InternetQueryOption Lib "wininet.dll" Alias "InternetQueryOptionA" _
(ByVal hInternet As Long, ByVal lOption As Long, ByRef sBuffer As Any, ByRef lBufferLength As Long) As Integer
' Returns the version number of Wininet.dll.
Public Const INTERNET_OPTION_VERSION = 40
' Contains the version number of the DLL that contains the Windows Internet
' functions (Wininet.dll). This structure is used when passing the
' INTERNET_OPTION_VERSION flag to the InternetQueryOption function.
Public Type tWinInetDLLVersion
lMajorVersion As Long
lMinorVersion As Long
End Type
' Adds one or more HTTP request headers to the HTTP request handle.
Public Declare Function HttpAddRequestHeaders Lib "wininet.dll" Alias "HttpAddRequestHeadersA" _
(ByVal hHttpRequest As Long, ByVal sHeaders As String, ByVal lHeadersLength As Long, _
ByVal lModifiers As Long) As Integer
' Flags to modify the semantics of this function. Can be a combination of these values:
' Adds the header only if it does not already exist; otherwise, an error is returned.
Public Const HTTP_ADDREQ_FLAG_ADD_IF_NEW = &H10000000
' Adds the header if it does not exist. Used with REPLACE.
Public Const HTTP_ADDREQ_FLAG_ADD = &H20000000
' Replaces or removes a header. If the header value is empty and the header is found,
' it is removed. If not empty, the header value is replaced
Public Const HTTP_ADDREQ_FLAG_REPLACE = &H80000000
---------------------------------------------
以上是基于ftp下载图片的代码，当然也可以下载其他的文件，希望对你有帮助
rainstormmaster 2003-11-24
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form1:
Option Explicit
Public hConnection As Long
Public hOpen As Long
Private Sub i_Connection()
Dim nFlag As Long
nFlag = INTERNET_FLAG_PASSIVE
hOpen = InternetOpen(scUserAgent, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0)
hConnection = InternetConnect(hOpen, "ftpserver", INTERNET_INVALID_PORT_NUMBER, _
"username", "password", INTERNET_SERVICE_FTP, nFlag, 0)
End Sub
Private Sub i_Disconnection()
If hConnection <> 0 Then InternetCloseHandle hConnection
If hConnection <> 0 Then InternetCloseHandle (hConnection)
If hOpen <> 0 Then InternetCloseHandle (hOpen)
End Sub
Private Sub i_SetCurrentDirectory(sDir As String)
FtpSetCurrentDirectory hConnection, sDir
End Sub
Private Sub i_GetFiles()
Dim lRet As Long
Dim dwType As Long
dwType = FTP_TRANSFER_TYPE_BINARY
i_SetCurrentDirectory "/Favorites"
lRet = FtpGetFile(hConnection, "open.bmp", "c:\open.bmp", False, _
INTERNET_FLAG_RELOAD, dwType, 0)
End Sub
Private Sub i_PutFiles()
Dim lRet As Long
Dim dwType As Long
dwType = FTP_TRANSFER_TYPE_BINARY
i_SetCurrentDirectory "/Favorites"
bRet = FtpPutFile(hConnection, "c:\root.bmp", "root.bmp", dwType, 0)
End Sub
Private Sub Form_Load()
i_Connection
i_GetFiles
i_PutFiles
i_Disconnection
End Sub
Private Sub Form_Unload(Cancel As Integer)
i_Disconnection
End Sub
-----------------------------------
modWinInet.bas(模块)
Option Explicit
Declare Function GetProcessHeap Lib "kernel32" () As Long
Declare Function HeapAlloc Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, ByVal dwBytes As Long) As Long
Declare Function HeapFree Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, lpMem As Any) As Long
Public Const HEAP_ZERO_MEMORY = &H8
Public Const HEAP_GENERATE_EXCEPTIONS = &H4
Declare Sub CopyMemory1 Lib "kernel32" Alias "RtlMoveMemory" ( _
hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Declare Sub CopyMemory2 Lib "kernel32" Alias "RtlMoveMemory" ( _
hpvDest As Long, hpvSource As Any, ByVal cbCopy As Long)
Public Const MAX_PATH = 260
Public Const NO_ERROR = 0
Public Const FILE_ATTRIBUTE_READONLY = &H1
Public Const FILE_ATTRIBUTE_HIDDEN = &H2
Public Const FILE_ATTRIBUTE_SYSTEM = &H4
Public Const FILE_ATTRIBUTE_DIRECTORY = &H10
Public Const FILE_ATTRIBUTE_ARCHIVE = &H20
Public Const FILE_ATTRIBUTE_NORMAL = &H80
Public Const FILE_ATTRIBUTE_TEMPORARY = &H100
Public Const FILE_ATTRIBUTE_COMPRESSED = &H800
Public Const FILE_ATTRIBUTE_OFFLINE = &H1000
Type FILETIME
dwLowDateTime As Long
dwHighDateTime As Long
End Type
Type WIN32_FIND_DATA
dwFileAttributes As Long
ftCreationTime As FILETIME
ftLastAccessTime As FILETIME
ftLastWriteTime As FILETIME
nFileSizeHigh As Long
nFileSizeLow As Long
dwReserved0 As Long
dwReserved1 As Long
cFileName As String * MAX_PATH
cAlternate As String * 14
End Type
Public Const ERROR_NO_MORE_FILES = 18
Public Declare Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
(ByVal hFind As Long, lpvFindData As WIN32_FIND_DATA) As Long
Public Declare Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
(ByVal hFtpSession As Long, ByVal lpszSearchFile As String, _
lpFindFileData As WIN32_FIND_DATA, ByVal dwFlags As Long, ByVal dwContent As Long) As Long
Public Declare Function FtpGetFile Lib "wininet.dll" Alias "FtpGetFileA" _
(ByVal hFtpSession As Long, ByVal lpszRemoteFile As String, _
ByVal lpszNewFile As String, ByVal fFailIfExists As Boolean, ByVal dwFlagsAndAttributes As Long, _
ByVal dwFlags As Long, ByVal dwContext As Long) As Boolean
Public Declare Function FtpPutFile Lib "wininet.dll" Alias "FtpPutFileA" _
(ByVal hFtpSession As Long, ByVal lpszLocalFile As String, _
ByVal lpszRemoteFile As String, _
ByVal dwFlags As Long, ByVal dwContext As Long) As Boolean
Public Declare Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" _
(ByVal hFtpSession As Long, ByVal lpszDirectory As String) As Boolean
' Initializes an application's use of the Win32 Internet functions
Public Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
(ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, _
ByVal sProxyBypass As String, ByVal lFlags As Long) As Long
' User agent constant.
Public Const scUserAgent = "vb wininet"
' Use registry access settings.
Public Const INTERNET_OPEN_TYPE_PRECONFIG = 0
Public Const INTERNET_OPEN_TYPE_DIRECT = 1
Public Const INTERNET_OPEN_TYPE_PROXY = 3
Public Const INTERNET_INVALID_PORT_NUMBER = 0
Public Const FTP_TRANSFER_TYPE_ASCII = &H1
Public Const FTP_TRANSFER_TYPE_BINARY = &H1
Public Const INTERNET_FLAG_PASSIVE = &H8000000
Option Explicit
Public hConnection As Long
Public hOpen As Long
Private Sub i_Connection()
Dim nFlag As Long
nFlag = INTERNET_FLAG_PASSIVE
hOpen = InternetOpen(scUserAgent, INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0)
hConnection = InternetConnect(hOpen, "ftpserver", INTERNET_INVALID_PORT_NUMBER, _
"username", "password", INTERNET_SERVICE_FTP, nFlag, 0)
End Sub
Private Sub i_Disconnection()
If hConnection <> 0 Then InternetCloseHandle hConnection
If hConnection <> 0 Then InternetCloseHandle (hConnection)
If hOpen <> 0 Then InternetCloseHandle (hOpen)
End Sub
Private Sub i_SetCurrentDirectory(sDir As String)
FtpSetCurrentDirectory hConnection, sDir
End Sub
Private Sub i_GetFiles()
Dim lRet As Long
Dim dwType As Long
dwType = FTP_TRANSFER_TYPE_BINARY
i_SetCurrentDirectory "/Favorites"
lRet = FtpGetFile(hConnection, "open.bmp", "c:\open.bmp", False, _
INTERNET_FLAG_RELOAD, dwType, 0)
End Sub
Private Sub i_PutFiles()
Dim lRet As Long
Dim dwType As Long
dwType = FTP_TRANSFER_TYPE_BINARY
i_SetCurrentDirectory "/Favorites"
bRet = FtpPutFile(hConnection, "c:\root.bmp", "root.bmp", dwType, 0)
End Sub
Private Sub Form_Load()
i_Connection
i_GetFiles
i_PutFiles
i_Disconnection
End Sub
Private Sub Form_Unload(Cancel As Integer)
i_Disconnection
End Sub
-----------------------------------
modWinInet.bas(模块)
Option Explicit
Declare Function GetProcessHeap Lib "kernel32" () As Long
Declare Function HeapAlloc Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, ByVal dwBytes As Long) As Long
Declare Function HeapFree Lib "kernel32" (ByVal hHeap As Long, ByVal dwFlags As Long, lpMem As Any) As Long
Public Const HEAP_ZERO_MEMORY = &H8
Public Const HEAP_GENERATE_EXCEPTIONS = &H4
Declare Sub CopyMemory1 Lib "kernel32" Alias "RtlMoveMemory" ( _
hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Declare Sub CopyMemory2 Lib "kernel32" Alias "RtlMoveMemory" ( _
hpvDest As Long, hpvSource As Any, ByVal cbCopy As Long)
Public Const MAX_PATH = 260
Public Const NO_ERROR = 0
Public Const FILE_ATTRIBUTE_READONLY = &H1
Public Const FILE_ATTRIBUTE_HIDDEN = &H2
Public Const FILE_ATTRIBUTE_SYSTEM = &H4
Public Const FILE_ATTRIBUTE_DIRECTORY = &H10
Public Const FILE_ATTRIBUTE_ARCHIVE = &H20
Public Const FILE_ATTRIBUTE_NORMAL = &H80
Public Const FILE_ATTRIBUTE_TEMPORARY = &H100
Public Const FILE_ATTRIBUTE_COMPRESSED = &H800
Public Const FILE_ATTRIBUTE_OFFLINE = &H1000
Type FILETIME
dwLowDateTime As Long
dwHighDateTime As Long
End Type
Type WIN32_FIND_DATA
dwFileAttributes As Long
ftCreationTime As FILETIME
ftLastAccessTime As FILETIME
ftLastWriteTime As FILETIME
nFileSizeHigh As Long
nFileSizeLow As Long
dwReserved0 As Long
dwReserved1 As Long
cFileName As String * MAX_PATH
cAlternate As String * 14
End Type
Public Const ERROR_NO_MORE_FILES = 18
Public Declare Function InternetFindNextFile Lib "wininet.dll" Alias "InternetFindNextFileA" _
(ByVal hFind As Long, lpvFindData As WIN32_FIND_DATA) As Long
Public Declare Function FtpFindFirstFile Lib "wininet.dll" Alias "FtpFindFirstFileA" _
(ByVal hFtpSession As Long, ByVal lpszSearchFile As String, _
lpFindFileData As WIN32_FIND_DATA, ByVal dwFlags As Long, ByVal dwContent As Long) As Long
Public Declare Function FtpGetFile Lib "wininet.dll" Alias "FtpGetFileA" _
(ByVal hFtpSession As Long, ByVal lpszRemoteFile As String, _
ByVal lpszNewFile As String, ByVal fFailIfExists As Boolean, ByVal dwFlagsAndAttributes As Long, _
ByVal dwFlags As Long, ByVal dwContext As Long) As Boolean
Public Declare Function FtpPutFile Lib "wininet.dll" Alias "FtpPutFileA" _
(ByVal hFtpSession As Long, ByVal lpszLocalFile As String, _
ByVal lpszRemoteFile As String, _
ByVal dwFlags As Long, ByVal dwContext As Long) As Boolean
Public Declare Function FtpSetCurrentDirectory Lib "wininet.dll" Alias "FtpSetCurrentDirectoryA" _
(ByVal hFtpSession As Long, ByVal lpszDirectory As String) As Boolean
' Initializes an application's use of the Win32 Internet functions
Public Declare Function InternetOpen Lib "wininet.dll" Alias "InternetOpenA" _
(ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, _
ByVal sProxyBypass As String, ByVal lFlags As Long) As Long
' User agent constant.
Public Const scUserAgent = "vb wininet"
' Use registry access settings.
Public Const INTERNET_OPEN_TYPE_PRECONFIG = 0
Public Const INTERNET_OPEN_TYPE_DIRECT = 1
Public Const INTERNET_OPEN_TYPE_PROXY = 3
Public Const INTERNET_INVALID_PORT_NUMBER = 0
Public Const FTP_TRANSFER_TYPE_ASCII = &H1
Public Const FTP_TRANSFER_TYPE_BINARY = &H1
Public Const INTERNET_FLAG_PASSIVE = &H8000000
rainstormmaster 2003-11-24
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出错的原因有很多，把你的代码贴上来，可以参考：
哪里有WinInet的介绍
http://www.china-askpro.com/msg13/qa64.shtml
用Visual Basic创建FTP组件
http://www0.ccidnet.com/tech/guide/2000/08/01/58_1028.html
哪里有WinInet的介绍
http://www.china-askpro.com/msg13/qa64.shtml
用Visual Basic创建FTP组件
http://www0.ccidnet.com/tech/guide/2000/08/01/58_1028.html
liwz123 2003-11-24
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查MSDN把，里面有详细描述
