Code:
Private Sub btn_dxf_pdf_Click()'PDF-Erstellung
'Set a reference to the active document (the document to be published).
    Dim oDocument As Document
    Set oDocument = ThisApplication.ActiveDocument
  
    Dim bErr As Boolean
  
    Dim fso As Object
    Dim dDoc As Document
    Set fso = CreateObject("Scripting.FilesystemObject")
    Dim ret As Variant
    Set dDoc = ThisApplication.ActiveDocument
    
      If dDoc.FullFileName = "" Then
        MsgBox "Bitte zuerst die Datei speichern...  "
        Exit Sub
    End If
  
  ' Get the PDF translator Add-In.
    Dim PDFAddIn As TranslatorAddIn
    Set PDFAddIn = ThisApplication.ApplicationAddIns.ItemById("{0AC6FD96-2F4D-42CE-8BE0-8AEA580399E4}")
  
    Dim oContext As TranslationContext
    Set oContext = ThisApplication.TransientObjects.CreateTranslationContext
    oContext.Type = kFileBrowseIOMechanism
' Create a NameValueMap object
    Dim oOptions As NameValueMap
    Set oOptions = ThisApplication.TransientObjects.CreateNameValueMap
' Create a DataMedium object
    Dim oDataMedium As DataMedium
    Set oDataMedium = ThisApplication.TransientObjects.CreateDataMedium
  
    Dim oZeichNr As Inventor.Property
    On Error GoTo ErrorHandler
    Set oZeichNr = dDoc.PropertySets(4).Item("Zeichnungsnummer")
    Dim oBlattNr As Inventor.Property
    On Error GoTo ErrorHandler
    Set oBlattNr = dDoc.PropertySets(4).Item("Blatt")
    Dim oRevNr As Inventor.Property
    On Error GoTo ErrorHandler
    Set oRevNr = dDoc.PropertySets(4).Item("Index")
' Check whether the translator has 'SaveCopyAs' options
    If PDFAddIn.HasSaveCopyAsOptions(oDocument, oContext, oOptions) Then
        'oOptions.Value("All_Color_AS_Black") = 0
        'oOptions.Value("Remove_Line_Weights") = 0
        'oOptions.Value("Vector_Resolution") = 400
        oOptions.Value("Sheet_Range") = kPrintAllSheets
        'oOptions.Value("Custom_Begin_Sheet") = 2
        'oOptions.Value("Custom_End_Sheet") = 4
  
    'Set the destination file name
If bErr = False Then
    oDataMedium.filename = "C:\GAIN\Exchange\" & "\" & oZeichNr.Value & "-" & oBlattNr.Value & "_" & oRevNr.Value & ".pdf"
Else
    oDataMedium.filename = "C:\GAIN\Exchange\" & NameSplit(oDocument.FullFileName) & ".pdf"
End If
  End If    'Publish document.
  Call PDFAddIn.SaveCopyAs(oDocument, oContext, oOptions, oDataMedium)
    MsgBox "PDF wurde unter  -- C:\GAIN\Exchange -- gespeichert!!"
Exit Sub
ErrorHandler:
bErr = True
Resume Next
'DXF-Erstellung
' Get the DXF translator Add-In.
Dim DXFAddIn As TranslatorAddIn
Set DXFAddIn = ThisApplication.ApplicationAddIns.ItemById("{C24E3AC4-122E-11D5-8E91-0010B541CD80}")
    
'Set a reference to the active document (the document to be published).
Set oDocument = ThisApplication.ActiveDocument
Set oContext = ThisApplication.TransientObjects.CreateTranslationContext
oContext.Type = kFileBrowseIOMechanism
' Create a NameValueMap object
Set oOptions = ThisApplication.TransientObjects.CreateNameValueMap
' Create a DataMedium object
Set oDataMedium = ThisApplication.TransientObjects.CreateDataMedium
' Check whether the translator has 'SaveCopyAs' options
If DXFAddIn.HasSaveCopyAsOptions(oDocument, oContext, oOptions) Then
    Dim strIniFile As String
    strIniFile = "C:\tempDXFOut.ini"
    ' Create the name-value that specifies the ini file to use.
    oOptions.Value("Export_Acad_IniFile") = strIniFile
End If
'Set the destination file name
oDataMedium.filename = "c:\tempdxfout.dxf"
'Publish document.
Call DXFAddIn.SaveCopyAs(oDocument, oContext, oOptions, oDataMedium)
End Sub
Private Function NameSplit(ByVal sFilename As String) As String
Dim oArray() As String
oArray = Split(sFilename, "\")
NameSplit = Replace(oArray(UBound(oArray)), ".idw", "")
End Function