如何在vb6中使用inet代理？

Question

我正在制作一个vb6的程序。 我喜欢使用vb6中的inet使用代理进行连接。如何去做？请帮忙。

谢谢

Answer 1

这是一个或多或少的通用功能打开，可以采取代理参数的互联网连接。这是如何使用代理的一个很好的例子。

Private Declare Function InternetOpen Lib "WinInet" Alias "InternetOpenA" (ByVal lpszAgent As String, ByVal lpAccessType As Long, ByVal lpszProxyName As String, ByVal lpszProxyBypass As String, ByVal lpFlags As Long) As Long 

Public Function OpenInternet(ByVal sAppName As String, ByVal lAccessType As Long, ByVal sProxyName As String, _ 
    ByVal sProxyBypass As String, ByVal lFlags As Long) As Boolean 
    Dim Rtn As Long 
    Dim lngINetHandle As Long 
    Dim strHeaders As String 
    Dim lngDllErr As Long 

    On Error GoTo errOpenInternet 

    RaiseEvent Operation("Opening internet connection") 
    Rtn = InternetOpen(ByVal sAppName, ByVal lAccessType, ByVal sProxyName, ByVal sProxyBypass, ByVal lFlags) 

    If Rtn = 0 Then 'failed for some reason 
     lngDllErr = Err.LastDllError 
     If lngDllErr <> 0 Then 
     RaiseEvent Operation("Error " & CStr(lngDllErr)) 
     Err.Raise lngDllErr, "OpenInternet", ErrorOut(Err.LastDllError, "OpenInternet") 
     End If 
    Else 
     RaiseEvent Operation("Connection opened") 
     InternetHandle = Rtn 
     ExtendedError = "" 
    End If 

    OpenInternet = CBool(Rtn) 

    Exit Function 

errOpenInternet: 
    Err.Raise Err.Number, Err.Source & ":OpenInternet", Err.Description 

End Function