• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 651
  • Last Modified:

Reading PDF metadata: problems with PDFVersion(Acrobat 3x), any workarounds with VB6?

When Acrobat Pro 6 is installed, the following VB 6 code works well
 
        Dim oPDF As Object
        Set oPDF = CreateObject("AcroExch.PDDoc")
        oPDF.Open (PathtoMyfile)        
        sFileTitle = oPDF.GetInfo("Title")

However, when this code encounters a PDF file with PDFVersion(Acrobat3.x) it hangs and eventually crashes.

Please can an expert suggest a workaround, such as a trap to detect the version before the hang/crash, or better yet, of course, a way to read the metadata of the legacy version?

Gordon
0
Gordon_Atherley
Asked:
Gordon_Atherley
  • 4
1 Solution
 
Gordon_AtherleyAuthor Commented:
I'm encountering more and more pdfs that are five or more years old, so the problem of the version of Acrobat used to create them is getting quite urgent. I've increased the points accordingly.

Suggestions will be gratefully received

Gordon
0
 
Gordon_AtherleyAuthor Commented:
I'm narrowing down the problem, which may help explain my question better.
On a machine with Acrobat Professional I can read the title of a pdf using this code

        Dim oPDF As Object
        Set oPDF = CreateObject("AcroExch.PDDoc")
        oPDF.Open (PathtoMyfile)        
        sFileTitle = oPDF.GetInfo("Title")

What should I subtitue for "Title" in GetInfo to read the PDF version?
In the dcoument properties (accessed from File > Properties), for a problem PDF, typically the data is

         PDF Version: 1.2(Acrobat 3.x)

I've tried various abbreviations of "PDF Version" without succes. Help would be really appreciated, please

Gordon
0
 
Gordon_AtherleyAuthor Commented:
I developed an answer of sorts to my question. I'm posting it here in case it's useful to someone. I can't very well accept my own answer and get points for doing it <grin> so, page editor, please could you close the question.

PDFs don't appear to have clearly defined version types. Instead, it seems, you have to go by the name of the application that produced the particular PDF, which is found in the Producer field. Then you look for words to identify the version of the application, which gives useful information about the PDF. Here's my so-so solution to ensure that I'm dealing with a PDF created by Adobe versions 5 and six.

        Dim oPDF As Object
        Set oPDF = CreateObject("AcroExch.PDDoc")
        oPDF.Open (myFileAndPath)
       
        sPDFProducer = oPDF.GetInfo("Producer")
       
        If InStr(sPDFProducer, "Adobe") > 0 Then
            If InStr(sPDFProducer, "5.") > 0 Then
                bProcess = True
            ElseIf InStr(sPDFProducer, "6.") > 0 Then
                bProcess = True
            End If
        ElseIf InStr(sPDFProducer, "Acrobat") > 0 Then
            If InStr(sPDFProducer, "5.") > 0 Then
                bProcess = True
            ElseIf InStr(sPDFProducer, "6.") > 0 Then
                bProcess = True
            End If
        End If
       
0
 
Gordon_AtherleyAuthor Commented:
Moderator

I answered my own question, so may I please leave it to you to decide the outcome?

Gordon
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

  • 4
Tackle projects and never again get stuck behind a technical roadblock.
Join Now