关于HttpSendRequest函数
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 Boolean
请问,这个函数里的几个参数分别是什么意思?
另外如何解决由网速问题造成挂起的问题,既如何设置HttpSendRequest的超时时间
