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'Download a file from the internet (without a prompt dialog) 'The following routine downloads a file from the internet without prompting the user first. Option Explicit 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 Private Declare Function InternetOpen Lib "wininet" Alias "InternetOpenA" (ByVal sAgent As String, ByVal lAccessType As Long, ByVal sProxyName As String, ByVal sProxyBypass As String, ByVal lFlags As Long) As Long Private Declare Function InternetCloseHandle Lib "wininet" (ByVal hInet As Long) As Integer 'Purpose : Retreview text from a web site 'Inputs : sURLFileName The URL and file name to download. ' sSaveToFile The filename to save the file to. ' [bOverwriteExisting] If True overwrites the file if it existings 'Outputs : Returns True on success. Function InternetGetFile(sURLFileName As String, sSaveToFile As String, Optional bOverwriteExisting As Boolean = False) As Boolean Dim lRet As Long Const S_OK As Long = 0, E_OUTOFMEMORY = &H8007000E Const INTERNET_OPEN_TYPE_PRECONFIG = 0, INTERNET_FLAG_EXISTING_CONNECT = &H20000000 Const INTERNET_OPEN_TYPE_DIRECT = 1, INTERNET_OPEN_TYPE_PROXY = 3 Const INTERNET_FLAG_RELOAD = &H80000000 On Error Resume Next 'Create an internet connection lRet = InternetOpen("", INTERNET_OPEN_TYPE_DIRECT, vbNullString, vbNullString, 0) If bOverwriteExisting Then If Len(Dir$(sSaveToFile)) Then VBA.Kill sSaveToFile End If End If 'Check file doesn't already exist If Len(Dir$(sSaveToFile)) = 0 Then 'Download file lRet = URLDownloadToFile(0&, sURLFileName, sSaveToFile, 0&, 0) If Len(Dir$(sSaveToFile)) Then 'File successfully downloaded InternetGetFile = True Else 'Failed to download file If lRet = E_OUTOFMEMORY Then Debug.Print "The buffer length is invalid or there was insufficient memory to complete the operation." Else Debug.Assert False Debug.Print "Error occurred " & lRet & " (this is probably a proxy server error)." End If InternetGetFile = False End If End If On Error GoTo 0 End Function 'Demonstration routine, downloads an image from vbusers.com 'to the c: drive Sub Test() If InternetGetFile("http://filename", "c:\filename", True) Then MsgBox "Successfully downloaded file!" Else MsgBox "Failed to download file!" End If End Sub
