wininet.dll 中关于FTP函数的问题，百思不得其解？

[yuanmu]

调用wininet.dll 中函数

Public Declare Function internetopen Lib "wininet.dll" _
Alias "InternetOpenA" _
(ByVal lpszcallername As String, _
ByVal dwaccesstype As Long, _
ByVal lpszproxyname As String, _
ByVal lpszproxybypass As String, _
ByVal dwFlags As Long) As Long
Public Declare Function internetconnect Lib "wininet.dll" _
Alias "InternetConnectA" _
(ByVal hinternetsession As Long, _
ByVal lpszservername As String, _
ByVal nproxyport As Integer, _
ByVal lpszusername As String, _
ByVal lpszpassword As String, _
ByVal dwservice As Long, _
ByVal dwFlags As Long, _
ByVal dwcontext As Long) As Long

Public Declare Function internetclosehandle Lib "wininet.dll" _
Alias "InternetCloseHandle" (ByVal hInet As Long) As Integer

调用过程为：
Open --> Connect -->Close(Connect) --> Close(Open)

在SP3包下VB程序能够正常退出
但在SP2，SP4包下VB程序常驻内存，无法退出。请问Why及如何解决?

[zqfleaf]

如果只求功能的话可以用EZFTP控件
到google上找一下有下的。

[aha99]

没遇到过这种情况，学习。。。

[sunnyboy6281]

vc5写FTP
http://www.csdn.net/develop/Read_Article.asp?Id=6152