Private 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
Public Declare Function DeleteUrlCacheEntry Lib "wininet" Alias "DeleteUrlCacheEntryA" (ByVal lpszUrlName As String) As Long
Sub DownloadImage(ByVal ImageUrl As String, ByVal ImagePath As String)
    Dim lngRetVal As Long
    lngRetVal = URLDownloadToFile(0, ImageUrl, ImagePath, 0, 0)
    If lngRetVal = 0 Then
        DeleteUrlCacheEntry ImageUrl  ‘清除缓存
        ‘MsgBox "成功"
    Else
        ‘MsgBox "失败"
    End If
End Sub