Declare Function URLDownloadToFile Lib "urlmon" Alias "URLDownloadToFileA" (ByVal pCaller As Long, ByVal szURL As String, ByVal szFileName As String, ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long其中lpfnCB是一个IBindStatusCallback接口的实现,你需要编写一个Class实现这个借口,然后将class设置为这个参数。
(ByVal pCaller As Long,
ByVal szURL As String,
ByVal szFileName As String,
ByVal dwReserved As Long,
ByVal lpfnCB As Long) As Long其中lpfnCB是一个IBindStatusCallback接口的实现,你需要编写一个Class实现这个借口,然后将class设置为这个参数。