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Program freezes up...

I'm currently working on a program that connects to a web site and saves it as a text file. I use the wininet.bas from Microsoft along with it. The problem is, the program freezes up when it starts and unfreezes when it has finished. Is there any way to fix this problem? Here is my code:

Option Explicit

Private hInternetSession As Long
Private hInternetConnect As Long
Private hHttpOpenRequest As Long
Private txtURL As String

Private Sub cmdGO_Click()
hInternetSession = 0
hHttpOpenRequest = 0
hInternetConnect = 0
hInternetSession = InternetOpen(scUserAgent,
INTERNET_OPEN_TYPE_PRECONFIG, vbNullString, vbNullString, 0)
If CBool(hInternetSession) Then
txtHTML = "Ready"
Else
txtHTML = "InternetOpen failed."
End If

txtURL = txtUrls.Text
'---------------------------------------------------------------------------
---------

Dim iRetVal As Integer
Dim sBuffer As String * 1024
Dim lBufferLen As Long
Dim vDllVersion As tWinInetDLLVersion
Dim sStatus As String
Dim sOptionBuffer As String
Dim lOptionBufferLen As Long
lBufferLen = Len(sBuffer)
If CBool(hInternetSession) Then
' SetStatus "InternetQueryOption"
InternetQueryOption hInternetSession, INTERNET_OPTION_VERSION,
vDllVersion, Len(vDllVersion)
hInternetConnect = InternetConnect(hInternetSession, CheckUrl,
INTERNET_DEFAULT_HTTP_PORT, _
"", "", INTERNET_SERVICE_HTTP, 0, 0)
If hInternetConnect > 0 Then

'SetStatus "HttpOpenRequest"
'If optGet.Value = True Then
sOptionBuffer = vbNullString
lOptionBufferLen = 0
hHttpOpenRequest = HttpOpenRequest(hInternetConnect,
"GET", GetUrlObject, "HTTP/1.0", vbNullString, 0, _
INTERNET_FLAG_RELOAD Or INTERNET_FLAG_KEEP_CONNECTION,
0)
'Else
' sOptionBuffer = txtPost.Text
' lOptionBufferLen = Len(sOptionBuffer)
' hHttpOpenRequest = HttpOpenRequest(hInternetConnect,
"POST", GetUrlObject, "HTTP/1.0", vbNullString, 0, _
' INTERNET_FLAG_RELOAD Or INTERNET_FLAG_MULTIPART, 0)
'End If

If CBool(hHttpOpenRequest) Then
'SetStatus "HttpSendRequest"
Debug.Print sOptionBuffer
Dim sHeader As String

'sHeader = "Accept: image/gif, image/x-xbitmap, image/jpeg,
image/pjpeg, application/vnd." & vbCrLf
'iRetVal = HttpAddRequestHeaders(hHttpOpenRequest, sHeader,
Len(sHeader), HTTP_ADDREQ_FLAG_REPLACE Or HTTP_ADDREQ_FLAG_ADD)
'Debug.Print iRetVal & " " & Len(sHeader)

sHeader = "Accept-Language: en" & vbCrLf
iRetVal = HttpAddRequestHeaders(hHttpOpenRequest, sHeader,
Len(sHeader), HTTP_ADDREQ_FLAG_REPLACE Or HTTP_ADDREQ_FLAG_ADD)
Debug.Print iRetVal & " " & Len(sHeader)

sHeader = "Connection: Keep-Alive" & vbCrLf
iRetVal = HttpAddRequestHeaders(hHttpOpenRequest, sHeader,
Len(sHeader), HTTP_ADDREQ_FLAG_REPLACE Or HTTP_ADDREQ_FLAG_ADD)
Debug.Print iRetVal & " " & Len(sHeader);

sHeader = "Content-Type: application/x-www-form-urlencoded"
& vbCrLf
iRetVal = HttpAddRequestHeaders(hHttpOpenRequest, sHeader,
Len(sHeader), HTTP_ADDREQ_FLAG_REPLACE Or HTTP_ADDREQ_FLAG_ADD)
Debug.Print iRetVal & " " & Len(sHeader);
'sHeader = "Content-Type: text/html" & vbCrLf ' "Accept =
image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd." &
vbCrLf
'iRetVal = HttpAddRequestHeaders(hHttpOpenRequest, sHeader,
Len(sHeader), HTTP_ADDREQ_FLAG_REPLACE Or HTTP_ADDREQ_FLAG_ADD)
'Debug.Print iRetVal & " " & Len(sHeader)

'Actually only INTERNET_OPTION_RECEIVE_TIMEOUT works. More info see the
following KB:
'BUG: InternetSetOption Does Not Set Timeout Values [axsdk]
'ID: Q176420 CREATED: 06-NOV-1997 MODIFIED: 06-NOV-1997
Dim dwTimeOut As Long
dwTimeOut = 30000
iRetVal = InternetSetOption(hHttpOpenRequest,
INTERNET_OPTION_CONNECT_TIMEOUT, _
dwTimeOut, 4)
Debug.Print iRetVal & " " & Err.LastDllError & " " &
"INTERNET_OPTION_CONNECT_TIMEOUT"
iRetVal = InternetSetOption(hHttpOpenRequest,
INTERNET_OPTION_RECEIVE_TIMEOUT, _
dwTimeOut, 4)
Debug.Print iRetVal & " " &
"INTERNET_OPTION_RECEIVE_TIMEOUT"
iRetVal = InternetSetOption(hHttpOpenRequest,
INTERNET_OPTION_SEND_TIMEOUT, _
dwTimeOut, 4)
Debug.Print iRetVal & " " & "INTERNET_OPTION_SEND_TIMEOUT"

Resend:
iRetVal = HttpSendRequest(hHttpOpenRequest, vbNullString, 0,
sOptionBuffer, lOptionBufferLen)
Dim dwStatus As Long, dwStatusSize As Long
dwStatusSize = Len(dwStatus)
HttpQueryInfo hHttpOpenRequest, HTTP_QUERY_FLAG_NUMBER Or
HTTP_QUERY_STATUS_CODE, dwStatus, dwStatusSize, 0
Select Case dwStatus
Case HTTP_STATUS_PROXY_AUTH_REQ
'make sure change it to your user name and password.
'Note Poxy authentication only works for IE40 wininet.
For IE3.0x, you need to
'manually add Proxy-Authentication header.
iRetVal = InternetSetOptionStr(hHttpOpenRequest,
INTERNET_OPTION_PROXY_USERNAME, _
"IUSR_WEIHUA1", Len("IUSR_WEIHUA1") + 1)
iRetVal = InternetSetOptionStr(hHttpOpenRequest,
INTERNET_OPTION_PROXY_PASSWORD, _
"IUSR_WEIHUA1", Len("IUSR_WEIHUA1") + 1)
Case HTTP_STATUS_DENIED
iRetVal = InternetSetOptionStr(hHttpOpenRequest,
INTERNET_OPTION_USERNAME, _
"IUSR_WEIHUA1", Len("IUSR_WEIHUA1") + 1)
iRetVal = InternetSetOptionStr(hHttpOpenRequest,
INTERNET_OPTION_PASSWORD, _
"IUSR_WEIHUA1", Len("IUSR_WEIHUA1") + 1)
GoTo Resend
End Select

If iRetVal Then
Else
' HttpSendRequest failed
sStatus = "HttpSendRequest call failed; Error code: " &
Err.LastDllError & "."
End If
Else
' HttpOpenRequest failed
sStatus = "HttpOpenRequest call failed; Error code: " &
Err.LastDllError & "."
End If
Else
' InternetConnect failed
sStatus = "InternetConnect call failed; Error code: " &
Err.LastDllError & "."
End If
Else
' hInternetSession handle not allocated
sStatus = "InternetOpen call failed: Error code: " &
Err.LastDllError & "."
End If

GetPage

InternetCloseHandle (hHttpOpenRequest)
InternetCloseHandle (hInternetConnect)
InternetCloseHandle (hInternetSession)

End Sub

Private Function GetPage()
Dim bDoLoop As Boolean
Dim sReadBuffer As String * 2048
Dim lNumberOfBytesRead As Long
Dim sBuffer As String
On Error Resume Next

bDoLoop = True
While bDoLoop
sReadBuffer = vbNullString
bDoLoop = InternetReadFile(hHttpOpenRequest, sReadBuffer,
Len(sReadBuffer), lNumberOfBytesRead)
sBuffer = sBuffer & Left$(sReadBuffer, lNumberOfBytesRead)
If Not CBool(lNumberOfBytesRead) Then bDoLoop = False
'If CBool(Val(lblContentLength)) Then ProgressBar1.Value =
ProgressBar1.Value + lNumberOfBytesRead
Wend
txtHTML = sBuffer
'ProgressBar1.Value = 0
End Function

Private Function CheckUrl() As String
If Len(txtURL) = 0 Then txtURL = "www.microsoft.com"
Dim posSlash As Long
posSlash = InStr(txtURL, "/")
If InStr(txtURL, "/") <> 0 Then
CheckUrl = Left(txtURL, InStr(txtURL, "/") - 1)
Else
CheckUrl = txtURL
End If
End Function

Private Function GetUrlObject() As String
If InStr(txtURL, "/") <> 0 Then
GetUrlObject = Right(txtURL, Len(txtURL) - InStr(txtURL, "/") + 1)
Else
GetUrlObject = ""
End If
End Function

--------------------------

I probably have extra un-needed code in there also... I got the code from a web site and don't have alot of experience with API calls so I haven't cleaned it up.

Any ideas how to fix this problem?

HATCHET

dokken,

Do you honestly expect someone to weed through your program and fix it for you for 25 points?! That code is a MESS!! State what you need done and wait for responses. Restate the question as needed based upon feedback. Don't just dump your code out here and say "WILL SOMEONE FIX THIS FOR ME?!"

If you're trying to pull down HTML code from a Web Page and save it to a .txt file, I have a snippit of code about 5 lines long that will do it quick ly and efficiently, but I'm not gunna bother with your code up there for 25 points, sorry.

HATCHET

a111a111a111

HATCHET: Good Point.
Can you Please email me the code topull down HTML code from a Web Page and save it to a .txt file .

Please thank you.

dokken

ASKER

I would have made it more points but thats all I have at the moment. Could I have the 5 line code? and if it goes through it more than once will it freeze the program until it has finished?

Thanks.

ASKER CERTIFIED SOLUTION

mark2150

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dokken

ASKER

mark2150,

That worked perfect! I forgot about the DoEvents.

Thanks.

HATCHET

Here's the 5 lines of code that I mentioned to save a file on the internet to a file on your computer. You can replace the http:// with ftp:// and get a file from an FTP server too. Hope this helps a fe people. =]

Dim strSaveThisInfo as String

Inet1.AccessType = icUseDefault
strSaveThisInfo =
Inet1.OpenURL("http://www.microsoft.com/index.html")

Open "C:\Test.txt" For Output As #1
Print #1, strSaveThisInfo
Close #1

HATCHET

dokken

ASKER

I used that code like that before... the reason I switched was so I could set the UserAgent. With the Internet Control, Internet Log files show: MS URL Control 5.0 or something like that.