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how to read rtf file in webBrowser control?

Posted on 2002-07-19
Last Modified: 2010-08-05
I've got a small app (both Access 2000 and VB6) that uses a web Browser control to navigate to a variety of sites.  I then parse the table info or text from the html and populate an Access table.

My problem is that one site that I need ends up delivering an rtf file.  My web Browser control loads the rtf file ok, but I can't seem to find the proper syntax, object properties, methods, etc. to then read the text.

Optionally, I could load the file to a RichTextBox control, but I can't seem to make the .LoadFile method of the RichTextBox control find the file on the internet site.

Any suggestions?

note: I've already tried "webBrowser.document.documentElement.innerHtml" or innerText or just "webBrowser.document.body.innerText" and gotten the error message:
"Object doesn't support this property or method."

It seems that once the rtf file is loaded, all of the normal webBrowser.document properties and methods are invalid.

Question by:PatOBrien
  • 3
  • 3
LVL 16

Expert Comment

ID: 7165801
To some extents, yes. i don't know if there is a "DOM" for rtf file format.
LVL 16

Expert Comment

ID: 7165911
Well, as long as i can see, we could manage it like a word document, could you do a check?
(we have to use a better way to know which type of doc is but for testing, this would be enougth, wb1 is webbrowser control. We have to set a reference to microsoft word object library in the project)

Private Sub wb1_DocumentComplete(ByVal pDisp As Object, URL As Variant)
If (pDisp Is wb1.Object) Then
    If Right$(wb1.Document.Name, 3) = "rtf" Then
        Dim wrtf As Word.Document
        Set wrtf = wb1.Document
    End If
End If
End Sub

Do an inspection over wrtf var and see...
LVL 28

Accepted Solution

Ark earned 150 total points
ID: 7166326

Private Declare Function GetTempPath Lib "kernel32" Alias "GetTempPathA" (ByVal nSize As Long, ByVal lpBuffer As String) As Long
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 Function URLToTextBox(ByVal sUrl As String, txt As TextBox) As Boolean
  Dim sTemp As String, sHTML As String
  sTemp = GetTempDir & "dummy.html"
  If Dir$(sTemp) <> "" Then Kill sTemp
  Call URLDownloadToFile(0&, sURL, sTemp, 0, 0)
  Open sTemp For Binary As #1
       sHTML = Space(LOF(1))
       Get #1, , sHTML
  Close #1
  Kill sTemp
  txt.Text = sHTML
End Function

Public Function URLToRTB(ByVal sUrl As String, rtb As RichTextBox) As Boolean
  Dim sTemp As String, sHTML As String
  sTemp = GetTempDir & "dummy.rtf"
  If Dir$(sTemp) <> "" Then Kill sTemp
  Call URLDownloadToFile(0&, sURL, sTemp, 0, 0)
  rtb.LoadFile sTemp, rtfRTF
  Kill sTemp
End Function

Private Function GetTempDir() As String
  Dim tmp As String
  tmp = Space$(256)
  Call GetTempPath(Len(tmp), tmp)
  GetTempDir = TrimNull(tmp)
End Function

Private Function TrimNull(item As String)
  Dim pos As Integer
  pos = InStr(item, Chr$(0))
  If pos Then
     TrimNull = Left$(item, pos - 1)
     TrimNull = item
  End If
End Function

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Author Comment

ID: 7169769

It appears that it can (does) come in as Word Document.

What's next?


I'll be trying your functions today.... will let you know what I find.
LVL 16

Expert Comment

ID: 7169933
RTF could be read  to some extents as a Word Document
Better use Ark's code.

Author Comment

ID: 7170460
.... help me go in the right direction.

I added some "On Error" statements and set the function values.


Author Comment

ID: 7175707
I meant that it "...helped me go in the right direction.

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